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Additions/corrections
Storm Data, Jan, 2005 by Thomas R. Karl
June 2004
Time Path Path
Local/ Length Width
Location Date Standard (Miles) (Yards)
PACIFIC
GUZ001>002 Belau--Micronesia
13 0000SST
15 2359SST
TROPICAL STORM DIANMU
After developing about 125 miles
southwest of Yap on the morning of June
13th, Tropical Depression 09W moved
slowly northwest between Yap and Palau
that evening. It became a tropical
storm early on the 14th, and appeared
to be headed safely away from Yap.
However, Tropical Storm Dianmu slowed
abruptly and turned to an
east-northeast track. Dianmu dealt Yap
a glancing blow, passing about 75 miles
northwest of that island as a 65 mph
tropical storm at about 0400 SST on the
15th. Meanwhile, southwest monsoon flow
into Dianmu brought gusty winds and
heavy rain to Palau on the 13th and
14th. By 1300 SST on the 15th, Dianmu
was a typhoon, centered over 150 miles
north of Yap and moving quickly away.
At Yap, the highest 2-minute wind was
32 mph; from the south-southwest on the
14th at 2353 SST, and from the
west-southwest on the 15th at 0650 SST.
The maximum gust of 59 mph from the
south-southwest was recorded at 2253
SST on the 14th. Since Yap spent most
of its time in a dry slot between
Dianmu's central cloud mass and its
outer rain band, the greatest 24-hour
rainfall at the airport was only 0.56
inches through 1600 SST on the 15th.
The lowest sea-level pressure at the
airport was 998.3 mb at 0457 SST on the
15th. No damage or injuries were
reported at Yap.
While Palau had less wind than Yap,
much more rain fell there as a result
of persistent monsoon flow into Dianmu.
The maximum 24-hour rainfall was 5.22
inches through 1300 SST on the 14th,
while 7.19 inches fell in the 48 hours
ending at 0400 SST on the 15th,
resulting in minor flooding. The
highest 2-minute wind was only 21 mph
on the 14th, while the peak gusts of 44
mph were recorded at the Weather
Service Office on the 15th at 0902 SST
and 1659 SST. No damage or injuries
were reported.
Saipan
Garapan 19 1200SST
A 17-year-old male was lost in strong
currents while using a boogie board off
Sugar Dock near Garapan. His body was
washed ashore the afternoon of 21 June.
His 16-year old companion was rescued
as he clung to a buoy outside the reef
line. M171W
Guam
Agat 21 1410SST
Four swimmers off Agat were swept up in
strong currents. Three made it back to
shore, but a 14-year-old girl was
unable to get back, and drowned. F14IW
Guam
Countywide 27 0000SST
02 0000SST
M54VE
GUZ005 Northern Marianas
27 0000SST
30 0000SST
TYPHOON TINGTING
After starting about 500 miles
southeast of Saipan the evening of June
25th, Tropical Depression 11W moved
steadily northwest, becoming Tropical
Storm Tingting the following afternoon
at 1600 SST. Tingting brought tropical
storm conditions to Guam, Rota, Tinian
and Saipan on the 28th, passing 70
miles northeast of Saipan with maximum
winds of 70 mph near the center at 0600
SST that morning. Tingting became a
typhoon later in the afternoon, then
passed 65 miles southwest of Pagan
Island with maximum winds of 90 mph at
2200 SST that evening. Both Pagan
Island and Agrihan experienced typhoon
conditions during that passage. Along
with the high winds, all the islands
received heavy rain, but Guam was
especially hard hit, with phenomenal
rainfall resulting in widespread flash
flooding and property damage.
Guam: While Tropical Storm Tingling was
still 250 miles or more east-northeast
of Guam, peripheral rain bands brought
record-breaking rainfall and widespread
flash flooding to Guam. On the 27th
through the morning of the 28th, over
20 inches of rain fell in 24 hours over
much of the island. At Guam
International Airport, 16.00 inches was
recorded on June 27th, followed by 5.49
inches on the 28th. The maximum 24-hour
rainfall was 18.80 inches, ending at
0600 SST on the 28th. At Inarajan in
southern Guam, 21.85 inches was
recorded by the automated station for
the 24 hours ending at 0800 SST on the
28th. (It is worth noting that the
previous wettest June on record, June
of 1985, had a monthly total of 14.61
inches at the airport.) Rainfall was
somewhat less Airport, the highest
sustained wind of 44 mph came on the
28th at 0454 SST, and the peak gust was
58 mph at 0241 SST. The highest
sustained wind on Guam was 51 mph at
Andersen AFB on the 28th at 0959 SST,
while the highest observed gust was 66
mph at the Inarajan automated station
on the 28th at 0251 SST. The lowest
pressure recorded on Guam was 994.6 mb
at Andersen AFB on the 28th at 0356
SST.
Rota: After passing 160 miles northeast
of Rota around 0600 SST the morning of
the 28th, Tingting delivered its
strongest winds to Rota later that
afternoon. At Rota International
Airport, the highest sustained wind was
44 mph from the west-southwest at 1455
SST, while the peak gust of 58 mph from
the southwest was recorded at 1550 SST.
The automated station at the airport
recorded 5.72 inches of rain in the 24
hours ending at 2251 SST on the 27th,
and 8.74 inches total for the 27th and
28th. The lowest reported sea-level
pressure at the automated station was
992.3 mb at 0451 SST on the 28th.
Tinian: The observer at Tinian Airport
does not report rainfall or sea-level
pressure, and is only there part-time.
The highest reported sustained wind of
35 mph occurred several times: from the
west on the 28th at 0850 SST, at 1150
SST, and at 1250 SST; and from the
southwest at 1855 SST. The highest
reported gust was 52 mph from the
southwest on the 28th at 1855 SST.
Saipan: At Saipan International
Airport, the maximum sustained wind of
62 mph and the peak gust of 77 mph were
both from the southwest, on the 28th at
1806 SST, about 12 hours after
Tingting's closest approach. In the 24
hours ending at 2354 SST on the 28th,
7.78 inches of rain fell. The lowest
sea-level pressure was 984.9 mb,
recorded at 0654 and 0754 SST on the
28th.
Pagan Island: The automated station on
Pagan recorded both the maximum
sustained wind of 66 mph and the peak
gust of 132 mph from the east-northeast
at 0200 SST on the 29th. The lowest
sea-level pressure of 973.6 mb occurred
an hour earlier, at 0100 SST.
STORM EFFECTS AND DAMAGE
Guam: While Guam did experience a short
period of minimal tropical storm force
winds, nearly all of the damage arose
from the extraordinary rainfall and the
resultant flooding and mudslides. Crop
damage amounted to about $500,000, with
most farmers reporting a total crop
loss. Fifty-seven homes suffered major
damage from mudslides and inundation,
rendering them unlivable, and another
624 homes had minor damage. A road in
Santa Rita collapsed as a pickup truck
was crossing over it, damaging the
truck. In southeastern Guam, a man died
after driving his sport utility vehicle
into water several feet deep at the
Ylig River bridge in Yona. Total damage
is estimated at $6,000,000.
Rota: As with Guam, most of the damage
on Rota resulted from heavy rain and
high seas. High seas inflicted an
estimated $1 million in damage on
Rota's commercial port. The combined
cost of debris cleanup and repairs to
roads and bridges amounted to about
$762,000, and crop loss was estimated
at up to $500,000. No major damage was
reported to homes, businesses or
schools. Total loss: about $2,262,000.
Tinian/Saipan: In contrast to Guam and
Rota, high winds accounted for much of
the damage to Tinian and Saipan. On
Tinian, 4 homes were destroyed and
another 24 suffered major damage. On
Saipan, 4 homes were destroyed, 81 had
major damage, and 101 homes had only
minor damage. Only minor damage was
done to the public schools on both
islands. At the Saipan seaport, a
derelict fishing vessel containing
thousands of gallons of diesel fuel and
oil sank during the storm. Over
$300,000 in damage was done to Saipan's
power system, with over 50 lines, 20
transformers and 6 poles needing repair
or replacement. Crop loss amounted to
about $518,000, with 90% of the banana
trees being blown down. Total damage is
estimated at $2,400,000.
Alamagan/Pagan/Agrihan: All private
homes on these islands were destroyed
(about 6 total), all crops and stored
food were lost, and the water supply
was contaminated. On Agrihan, the main
public facility, used as a dispensary,
radio room, food closet and storm
shelter, was heavily damaged. On
Alamagan, the mayor's office radio
antenna was blown away and never found.
Total damage is about $500,000.
Total damage for this typhoon/flash
flood event is $11,162,000. Seven
fatalities are associated with this
event: 1 man was killed after driving
into deep floodwater on Guam (see
above), a man drowned in high surf on
Guam the morning of the 28th (see
separate event entry), and 5 men
drowned while kayaking in Guam's rough
waters on the 29th (see separate event
entry).
Saipan
Garapan 27 1300SST
Three Chinese women, ages unknown,
drowned in rough waters and strong
currents off Sugar Dock Beach near
Garapan, Saipan. F?IW, F?IW, F?IW
GUZ006 Guam
28 0800SST
A 19-year-old male was swept off the
reef by high surf at Ypao beach, in
Tumon, and drowned. The high surf was
related to the passage of Tropical
Storm Ting-Ting through the Mariana
Islands. At the time of the drowning,
Ting-Ting was centered about 215 miles
northeast of Guam. M191W
GUZ006 Guam
29 1500SST
After five men went out into the waters
off Piti in three kayaks, heavy surf
overturned the kayaks. Two bodies were
later recovered, and the other three
are presumed drowned. The surf was
related to Typhoon Ting-Ting, which had
passed through the northern Mariana
Islands the previous day, and was at
that time about 440 miles
north-northwest of Guam. M21IW, M?IW,
M?IW, M?IW, M?IW
Number of Estimated
Persons Damage
Location Killed Injured Property Crops
PACIFIC
GUZ001>002
0 0 0 0
TROPICAL STORM DIANMU
After developing about 125 miles
southwest of Yap on the morning of June
13th, Tropical Depression 09W moved
slowly northwest between Yap and Palau
that evening. It became a tropical
storm early on the 14th, and appeared
to be headed safely away from Yap.
However, Tropical Storm Dianmu slowed
abruptly and turned to an
east-northeast track. Dianmu dealt Yap
a glancing blow, passing about 75 miles
northwest of that island as a 65 mph
tropical storm at about 0400 SST on the
15th. Meanwhile, southwest monsoon flow
into Dianmu brought gusty winds and
heavy rain to Palau on the 13th and
14th. By 1300 SST on the 15th, Dianmu
was a typhoon, centered over 150 miles
north of Yap and moving quickly away.
At Yap, the highest 2-minute wind was
32 mph; from the south-southwest on the
14th at 2353 SST, and from the
west-southwest on the 15th at 0650 SST.
The maximum gust of 59 mph from the
south-southwest was recorded at 2253
SST on the 14th. Since Yap spent most
of its time in a dry slot between
Dianmu's central cloud mass and its
outer rain band, the greatest 24-hour
rainfall at the airport was only 0.56
inches through 1600 SST on the 15th.
The lowest sea-level pressure at the
airport was 998.3 mb at 0457 SST on the
15th. No damage or injuries were
reported at Yap.
While Palau had less wind than Yap,
much more rain fell there as a result
of persistent monsoon flow into Dianmu.
The maximum 24-hour rainfall was 5.22
inches through 1300 SST on the 14th,
while 7.19 inches fell in the 48 hours
ending at 0400 SST on the 15th,
resulting in minor flooding. The
highest 2-minute wind was only 21 mph
on the 14th, while the peak gusts of 44
mph were recorded at the Weather
Service Office on the 15th at 0902 SST
and 1659 SST. No damage or injuries
were reported.
Saipan
Garapan 1 0 0
A 17-year-old male was lost in strong
currents while using a boogie board off
Sugar Dock near Garapan. His body was
washed ashore the afternoon of 21 June.
His 16-year old companion was rescued
as he clung to a buoy outside the reef
line. M171W
Guam
Agat 1 0 0
Four swimmers off Agat were swept up in
strong currents. Three made it back to
shore, but a 14-year-old girl was
unable to get back, and drowned. F14IW
Guam
Countywide 1 0 5.5M 500 K
M54VE
GUZ005
0 0 3.9M 1.3M
TYPHOON TINGTING
After starting about 500 miles
southeast of Saipan the evening of June
25th, Tropical Depression 11W moved
steadily northwest, becoming Tropical
Storm Tingting the following afternoon
at 1600 SST. Tingting brought tropical
storm conditions to Guam, Rota, Tinian
and Saipan on the 28th, passing 70
miles northeast of Saipan with maximum
winds of 70 mph near the center at 0600
SST that morning. Tingting became a
typhoon later in the afternoon, then
passed 65 miles southwest of Pagan
Island with maximum winds of 90 mph at
2200 SST that evening. Both Pagan
Island and Agrihan experienced typhoon
conditions during that passage. Along
with the high winds, all the islands
received heavy rain, but Guam was
especially hard hit, with phenomenal
rainfall resulting in widespread flash
flooding and property damage.
Guam: While Tropical Storm Tingling was
still 250 miles or more east-northeast
of Guam, peripheral rain bands brought
record-breaking rainfall and widespread
flash flooding to Guam. On the 27th
through the morning of the 28th, over
20 inches of rain fell in 24 hours over
much of the island. At Guam
International Airport, 16.00 inches was
recorded on June 27th, followed by 5.49
inches on the 28th. The maximum 24-hour
rainfall was 18.80 inches, ending at
0600 SST on the 28th. At Inarajan in
southern Guam, 21.85 inches was
recorded by the automated station for
the 24 hours ending at 0800 SST on the
28th. (It is worth noting that the
previous wettest June on record, June
of 1985, had a monthly total of 14.61
inches at the airport.) Rainfall was
somewhat less Airport, the highest
sustained wind of 44 mph came on the
28th at 0454 SST, and the peak gust was
58 mph at 0241 SST. The highest
sustained wind on Guam was 51 mph at
Andersen AFB on the 28th at 0959 SST,
while the highest observed gust was 66
mph at the Inarajan automated station
on the 28th at 0251 SST. The lowest
pressure recorded on Guam was 994.6 mb
at Andersen AFB on the 28th at 0356
SST.
Rota: After passing 160 miles northeast
of Rota around 0600 SST the morning of
the 28th, Tingting delivered its
strongest winds to Rota later that
afternoon. At Rota International
Airport, the highest sustained wind was
44 mph from the west-southwest at 1455
SST, while the peak gust of 58 mph from
the southwest was recorded at 1550 SST.
The automated station at the airport
recorded 5.72 inches of rain in the 24
hours ending at 2251 SST on the 27th,
and 8.74 inches total for the 27th and
28th. The lowest reported sea-level
pressure at the automated station was
992.3 mb at 0451 SST on the 28th.
Tinian: The observer at Tinian Airport
does not report rainfall or sea-level
pressure, and is only there part-time.
The highest reported sustained wind of
35 mph occurred several times: from the
west on the 28th at 0850 SST, at 1150
SST, and at 1250 SST; and from the
southwest at 1855 SST. The highest
reported gust was 52 mph from the
southwest on the 28th at 1855 SST.
Saipan: At Saipan International
Airport, the maximum sustained wind of
62 mph and the peak gust of 77 mph were
both from the southwest, on the 28th at
1806 SST, about 12 hours after
Tingting's closest approach. In the 24
hours ending at 2354 SST on the 28th,
7.78 inches of rain fell. The lowest
sea-level pressure was 984.9 mb,
recorded at 0654 and 0754 SST on the
28th.
Pagan Island: The automated station on
Pagan recorded both the maximum
sustained wind of 66 mph and the peak
gust of 132 mph from the east-northeast
at 0200 SST on the 29th. The lowest
sea-level pressure of 973.6 mb occurred
an hour earlier, at 0100 SST.
STORM EFFECTS AND DAMAGE
Guam: While Guam did experience a short
period of minimal tropical storm force
winds, nearly all of the damage arose
from the extraordinary rainfall and the
resultant flooding and mudslides. Crop
damage amounted to about $500,000, with
most farmers reporting a total crop
loss. Fifty-seven homes suffered major
damage from mudslides and inundation,
rendering them unlivable, and another
624 homes had minor damage. A road in
Santa Rita collapsed as a pickup truck
was crossing over it, damaging the
truck. In southeastern Guam, a man died
after driving his sport utility vehicle
into water several feet deep at the
Ylig River bridge in Yona. Total damage
is estimated at $6,000,000.
Rota: As with Guam, most of the damage
on Rota resulted from heavy rain and
high seas. High seas inflicted an
estimated $1 million in damage on
Rota's commercial port. The combined
cost of debris cleanup and repairs to
roads and bridges amounted to about
$762,000, and crop loss was estimated
at up to $500,000. No major damage was
reported to homes, businesses or
schools. Total loss: about $2,262,000.
Tinian/Saipan: In contrast to Guam and
Rota, high winds accounted for much of
the damage to Tinian and Saipan. On
Tinian, 4 homes were destroyed and
another 24 suffered major damage. On
Saipan, 4 homes were destroyed, 81 had
major damage, and 101 homes had only
minor damage. Only minor damage was
done to the public schools on both
islands. At the Saipan seaport, a
derelict fishing vessel containing
thousands of gallons of diesel fuel and
oil sank during the storm. Over
$300,000 in damage was done to Saipan's
power system, with over 50 lines, 20
transformers and 6 poles needing repair
or replacement. Crop loss amounted to
about $518,000, with 90% of the banana
trees being blown down. Total damage is
estimated at $2,400,000.
Alamagan/Pagan/Agrihan: All private
homes on these islands were destroyed
(about 6 total), all crops and stored
food were lost, and the water supply
was contaminated. On Agrihan, the main
public facility, used as a dispensary,
radio room, food closet and storm
shelter, was heavily damaged. On
Alamagan, the mayor's office radio
antenna was blown away and never found.
Total damage is about $500,000.
Total damage for this typhoon/flash
flood event is $11,162,000. Seven
fatalities are associated with this
event: 1 man was killed after driving
into deep floodwater on Guam (see
above), a man drowned in high surf on
Guam the morning of the 28th (see
separate event entry), and 5 men
drowned while kayaking in Guam's rough
waters on the 29th (see separate event
entry).
Saipan
Garapan 3 0 0
Three Chinese women, ages unknown,
drowned in rough waters and strong
currents off Sugar Dock Beach near
Garapan, Saipan. F?IW, F?IW, F?IW
GUZ006
1 0 0 0
A 19-year-old male was swept off the
reef by high surf at Ypao beach, in
Tumon, and drowned. The high surf was
related to the passage of Tropical
Storm Ting-Ting through the Mariana
Islands. At the time of the drowning,
Ting-Ting was centered about 215 miles
northeast of Guam. M191W
GUZ006
5 0
After five men went out into the waters
off Piti in three kayaks, heavy surf
overturned the kayaks. Two bodies were
later recovered, and the other three
are presumed drowned. The surf was
related to Typhoon Ting-Ting, which had
passed through the northern Mariana
Islands the previous day, and was at
that time about 440 miles
north-northwest of Guam. M21IW, M?IW,
M?IW, M?IW, M?IW
Location Character of Storm
PACIFIC
GUZ001>002
Tropical Storm
TROPICAL STORM DIANMU
After developing about 125 miles
southwest of Yap on the morning of June
13th, Tropical Depression 09W moved
slowly northwest between Yap and Palau
that evening. It became a tropical
storm early on the 14th, and appeared
to be headed safely away from Yap.
However, Tropical Storm Dianmu slowed
abruptly and turned to an
east-northeast track. Dianmu dealt Yap
a glancing blow, passing about 75 miles
northwest of that island as a 65 mph
tropical storm at about 0400 SST on the
15th. Meanwhile, southwest monsoon flow
into Dianmu brought gusty winds and
heavy rain to Palau on the 13th and
14th. By 1300 SST on the 15th, Dianmu
was a typhoon, centered over 150 miles
north of Yap and moving quickly away.
At Yap, the highest 2-minute wind was
32 mph; from the south-southwest on the
14th at 2353 SST, and from the
west-southwest on the 15th at 0650 SST.
The maximum gust of 59 mph from the
south-southwest was recorded at 2253
SST on the 14th. Since Yap spent most
of its time in a dry slot between
Dianmu's central cloud mass and its
outer rain band, the greatest 24-hour
rainfall at the airport was only 0.56
inches through 1600 SST on the 15th.
The lowest sea-level pressure at the
airport was 998.3 mb at 0457 SST on the
15th. No damage or injuries were
reported at Yap.
While Palau had less wind than Yap,
much more rain fell there as a result
of persistent monsoon flow into Dianmu.
The maximum 24-hour rainfall was 5.22
inches through 1300 SST on the 14th,
while 7.19 inches fell in the 48 hours
ending at 0400 SST on the 15th,
resulting in minor flooding. The
highest 2-minute wind was only 21 mph
on the 14th, while the peak gusts of 44
mph were recorded at the Weather
Service Office on the 15th at 0902 SST
and 1659 SST. No damage or injuries
were reported.
Saipan
Garapan Rip Current
A 17-year-old male was lost in strong
currents while using a boogie board off
Sugar Dock near Garapan. His body was
washed ashore the afternoon of 21 June.
His 16-year old companion was rescued
as he clung to a buoy outside the reef
line. M171W
Guam
Agat Rip Current
Four swimmers off Agat were swept up in
strong currents. Three made it back to
shore, but a 14-year-old girl was
unable to get back, and drowned. F14IW
Guam
Countywide Flash Flood
M54VE
GUZ005
Hurricane/Typhoon
TYPHOON TINGTING
After starting about 500 miles
southeast of Saipan the evening of June
25th, Tropical Depression 11W moved
steadily northwest, becoming Tropical
Storm Tingting the following afternoon
at 1600 SST. Tingting brought tropical
storm conditions to Guam, Rota, Tinian
and Saipan on the 28th, passing 70
miles northeast of Saipan with maximum
winds of 70 mph near the center at 0600
SST that morning. Tingting became a
typhoon later in the afternoon, then
passed 65 miles southwest of Pagan
Island with maximum winds of 90 mph at
2200 SST that evening. Both Pagan
Island and Agrihan experienced typhoon
conditions during that passage. Along
with the high winds, all the islands
received heavy rain, but Guam was
especially hard hit, with phenomenal
rainfall resulting in widespread flash
flooding and property damage.
Guam: While Tropical Storm Tingling was
still 250 miles or more east-northeast
of Guam, peripheral rain bands brought
record-breaking rainfall and widespread
flash flooding to Guam. On the 27th
through the morning of the 28th, over
20 inches of rain fell in 24 hours over
much of the island. At Guam
International Airport, 16.00 inches was
recorded on June 27th, followed by 5.49
inches on the 28th. The maximum 24-hour
rainfall was 18.80 inches, ending at
0600 SST on the 28th. At Inarajan in
southern Guam, 21.85 inches was
recorded by the automated station for
the 24 hours ending at 0800 SST on the
28th. (It is worth noting that the
previous wettest June on record, June
of 1985, had a monthly total of 14.61
inches at the airport.) Rainfall was
somewhat less Airport, the highest
sustained wind of 44 mph came on the
28th at 0454 SST, and the peak gust was
58 mph at 0241 SST. The highest
sustained wind on Guam was 51 mph at
Andersen AFB on the 28th at 0959 SST,
while the highest observed gust was 66
mph at the Inarajan automated station
on the 28th at 0251 SST. The lowest
pressure recorded on Guam was 994.6 mb
at Andersen AFB on the 28th at 0356
SST.
Rota: After passing 160 miles northeast
of Rota around 0600 SST the morning of
the 28th, Tingting delivered its
strongest winds to Rota later that
afternoon. At Rota International
Airport, the highest sustained wind was
44 mph from the west-southwest at 1455
SST, while the peak gust of 58 mph from
the southwest was recorded at 1550 SST.
The automated station at the airport
recorded 5.72 inches of rain in the 24
hours ending at 2251 SST on the 27th,
and 8.74 inches total for the 27th and
28th. The lowest reported sea-level
pressure at the automated station was
992.3 mb at 0451 SST on the 28th.
Tinian: The observer at Tinian Airport
does not report rainfall or sea-level
pressure, and is only there part-time.
The highest reported sustained wind of
35 mph occurred several times: from the
west on the 28th at 0850 SST, at 1150
SST, and at 1250 SST; and from the
southwest at 1855 SST. The highest
reported gust was 52 mph from the
southwest on the 28th at 1855 SST.
Saipan: At Saipan International
Airport, the maximum sustained wind of
62 mph and the peak gust of 77 mph were
both from the southwest, on the 28th at
1806 SST, about 12 hours after
Tingting's closest approach. In the 24
hours ending at 2354 SST on the 28th,
7.78 inches of rain fell. The lowest
sea-level pressure was 984.9 mb,
recorded at 0654 and 0754 SST on the
28th.
Pagan Island: The automated station on
Pagan recorded both the maximum
sustained wind of 66 mph and the peak
gust of 132 mph from the east-northeast
at 0200 SST on the 29th. The lowest
sea-level pressure of 973.6 mb occurred
an hour earlier, at 0100 SST.
STORM EFFECTS AND DAMAGE
Guam: While Guam did experience a short
period of minimal tropical storm force
winds, nearly all of the damage arose
from the extraordinary rainfall and the
resultant flooding and mudslides. Crop
damage amounted to about $500,000, with
most farmers reporting a total crop
loss. Fifty-seven homes suffered major
damage from mudslides and inundation,
rendering them unlivable, and another
624 homes had minor damage. A road in
Santa Rita collapsed as a pickup truck
was crossing over it, damaging the
truck. In southeastern Guam, a man died
after driving his sport utility vehicle
into water several feet deep at the
Ylig River bridge in Yona. Total damage
is estimated at $6,000,000.
Rota: As with Guam, most of the damage
on Rota resulted from heavy rain and
high seas. High seas inflicted an
estimated $1 million in damage on
Rota's commercial port. The combined
cost of debris cleanup and repairs to
roads and bridges amounted to about
$762,000, and crop loss was estimated
at up to $500,000. No major damage was
reported to homes, businesses or
schools. Total loss: about $2,262,000.
Tinian/Saipan: In contrast to Guam and
Rota, high winds accounted for much of
the damage to Tinian and Saipan. On
Tinian, 4 homes were destroyed and
another 24 suffered major damage. On
Saipan, 4 homes were destroyed, 81 had
major damage, and 101 homes had only
minor damage. Only minor damage was
done to the public schools on both
islands. At the Saipan seaport, a
derelict fishing vessel containing
thousands of gallons of diesel fuel and
oil sank during the storm. Over
$300,000 in damage was done to Saipan's
power system, with over 50 lines, 20
transformers and 6 poles needing repair
or replacement. Crop loss amounted to
about $518,000, with 90% of the banana
trees being blown down. Total damage is
estimated at $2,400,000.
Alamagan/Pagan/Agrihan: All private
homes on these islands were destroyed
(about 6 total), all crops and stored
food were lost, and the water supply
was contaminated. On Agrihan, the main
public facility, used as a dispensary,
radio room, food closet and storm
shelter, was heavily damaged. On
Alamagan, the mayor's office radio
antenna was blown away and never found.
Total damage is about $500,000.
Total damage for this typhoon/flash
flood event is $11,162,000. Seven
fatalities are associated with this
event: 1 man was killed after driving
into deep floodwater on Guam (see
above), a man drowned in high surf on
Guam the morning of the 28th (see
separate event entry), and 5 men
drowned while kayaking in Guam's rough
waters on the 29th (see separate event
entry).
Saipan
Garapan Rip Current
Three Chinese women, ages unknown,
drowned in rough waters and strong
currents off Sugar Dock Beach near
Garapan, Saipan. F?IW, F?IW, F?IW
GUZ006
Heavy Surf/High Surf
A 19-year-old male was swept off the
reef by high surf at Ypao beach, in
Tumon, and drowned. The high surf was
related to the passage of Tropical
Storm Ting-Ting through the Mariana
Islands. At the time of the drowning,
Ting-Ting was centered about 215 miles
northeast of Guam. M191W
GUZ006
Heavy Surf/High Surf
After five men went out into the waters
off Piti in three kayaks, heavy surf
overturned the kayaks. Two bodies were
later recovered, and the other three
are presumed drowned. The surf was
related to Typhoon Ting-Ting, which had
passed through the northern Mariana
Islands the previous day, and was at
that time about 440 miles
north-northwest of Guam. M21IW, M?IW,
M?IW, M?IW, M?IW
July 2004
Time Path Path
Local/ Length Width
Location Date Standard (Miles) (Yards)
ILLINOIS, Northeast
Cook County
Alsip 03 1400CST
Large limbs were torn off of trees.
Cook County
Lyons 03 1430CST
A large tree was knocked over on Joliet
Ave.
Du Page County
Lombard 03 1440CST
1445CST
On the afternoon of July 3, an
upper-level system moving northeastward
from the St. Louis, MO area, across
Illinois, into southern Wisconsin. This
system produced several bands of
showers and thunderstorms, which moved
northeastward across the region. One
band moved through the Chicago metro
area and southern Lake Michigan,
producing isolated large hail and
strong wind gusts.
Livingston County
Fairbury 09 1440CST
1445CST
Scattered showers and thunderstorms
developed during the afternoon hours
across portions of east-central
Illinois from northern Iroquois County,
westward through the Ford County
panhandle to southeastern Livingston
County. One of these storms, over
Fairbury in Livingston County, rapidly
developed and produced large hail and
heavy rain for a brief time.
Ogle County
Polo 13 1037CST
1142CST
Lee County
6 NW Dixon to 13 1040CST
1 S Sublette 1200CST
A swath of hail cut across Lee County,
beginning at 6 miles south of Polo or 6
miles northwest of Dixon, through
Dixon, Amboy, Sublette to 1 mile south
of Sublette. Large hail was observed
throughout this path.
The following reports were received:
4.00 inches in diameter, was observed
by a Farm Service Agent 1 mile south of
Sublette.
2.00 and 1.25 inch hail was observed in
the town of Sublette.
1.00 inch hail in Amboy
2.75 inch hail in Amboy by law
enforcement
0.88 inch hail 6 miles south of Polo
0.75 inch hail in Dixon
Lee County
Amboy 13 1120CST
Wind gust was estimated by a trained
spotter.
Lee County
5 SW Amboy 13 1135CST
1145CST
A roof was blown off the addition of a
house and into a barn. Many rows of
corn were knocked down. These events
occurred at Bryer Knoll and Rocky Ford.
La Salle County
Mendota 13 1144CST
1205CST
Several reports of large hail, up to
1.75 inches were observed in Mendota by
trained spotters.
La Salle County
2 NW Peru 13 1210CST
Wind gust estimated by co-op observer,
knocking down trees.
La Salle County
Utica to 13 1220CST
5 WSW Kangley 1305CST
A swath of hail cut across La Salle
county from North Utica to 5 miles WSW
of Kangley.
The following reports were received:
1.75 inch hail at North Utica
0.75 inch hail at South Utica
1.25 inch hail 2 miles east of Leonore
0.75 inch hail at Leonore
1.00 inch hail 3 miles SW of Grand
Ridge
2.00 inch hail 5 miles W of Streator at
County Road 18.
1.75 inch hail at Streator
2.75 inch hail 5 miles WSW of Kangley
La Salle County
2 E Leonore 13 1240CST
Large limbs torn off of trees by strong
wind gusts.
La Salle County
2 S Ottawa 13 1254CST
1259CST
Livingston County
Manville 13 1309CST
1314CST
La Salle County
Streator 13 1315CST
1320CST
Power lines were torn down and large
limbs were torn off of trees. Trees up
to 12 inches in diameter were knocked
down.
Livingston County
5 NW Manville 13 1320CST
1325CST
a co-op observer located 1 mile south
of Streator, or 5 miles northwest of
Manville reported 2.00 inch hail.
Livingston County
Chatsworth 13 1345CST
1350CST
Livingston County
3 SE Forrest 13 1350CST
1355CST
Iroquois County
Loda 13 1400CST
Large limbs torn off of trees.
Ford County
3 W Paxton to 13 1412CST
Paxton
Widespread damage from the west side of
Paxton where small and medium size tree
limbs were down to about State Road
115, 4 miles west of Paxton. Numerous
large limbs were down, some large trees
snapped of uprooted. Shed roofs and
doors were torn off and barns
collapsed. A building was damaged at
the airport west of town. Damage
extended several miles north and south
of State Road 9, but the worst damage
appeard to be along SR 9 between County
Roads 1500 and 1700.
On the morning of July 13, a strong,
individual thunderstorm developed over
northwestern Illinois. During the late
morning and early afternoon hours, this
storm tracked southeastward,
strengthened and developed into a
cluster of strong storms. This storm
cluster moved through Ogle, Lee, La
Salle and Ford Counties. The eastern
and western extremes of the storm
cluster also affected portions of
Livingston and Iroquois Counties. Lee
and La Salle Counties were primarily
hit with large hail, with up to 4 inch
hail observed near Sublette. However,
there were isolated incidents of wind
damage, primarily to trees and power
lines. By the time the storms got to
Ford County, strong winds were the
major concern. Windspread wind damage
was observed in and around Paxton.
Ogle County
Chana 21 0850CST
Trees knocked down by strong wind
gusts.
Ogle County
Kings 21 0900CST
Large limbs torn off of trees.
Ogle County
Rochelle 21 0900CST
Large limbs torn off of trees.
Kane County
Montgomery 21 1500CST
1505CST
The hail was reported at the
intersection of Rt. 30 and Rt. 31.
Will County
2 W Bolingbrook to 21 1515CST
Bolingbrook 1520CST
Tree limbs were reported down at the
intersection of Boughton Rd. and Weber
Rd and trees were knocked down at the
intersection of Royce Rd. and Concord
Rd.
Will County
Plainfield to 21 1518CST
Plaines
A tree fell on to a power line.
Du Page County
Naperville 21 1520CST
1530CST
A 24 inch diameter tree was knocked
down and a 12 inch branch was torn from
a tree.
Kendall County
3 E Yorkville 21 1525CST
1530CST
Will County
Romeoville 21 1526CST
1531CST
The hail was observed Interstate 55 and
Budler Rd.
Du Page County
Woodridge 21 1533CST
Tree limbs were down at the
intersection of Rt. 53 and 75th St.
Cook County
Lemont 21 1535CST
Trees were knocked down on Main St.
between Cortland Rd. and Rt. 83.
Du Page County
Willowbrook 21 1542CST
Large tree limbs were reported down
near Interstate 55 and Rt. 83.
Cook County
Chicago 21 1555CST
1600CST
Large hail was reported near the
intersection of 64th St. and Maple Ave.
Cook County
Chicago Hgts 21 1558CST
Large tree limbs were reported down.
Cook County
Alsip 21 1600CST
Large limbs, several trees and flag
poles were knocked down.
Cook County
Burbank 21 1600CST
Large tree limbs, trees, power line and
power poles were knocked down.
Cook County
Chicago Lawn to 21 1600CST
Chicago
Large tree limbs were down near 64th
St. and Maple Ave.
Cook County
Bridgeview 21 1601CST
A 7 inch diameter tree was snapped in
half at 87th St. and Roberts Rd.
During the morning hours of July 21, a
cold front extended from northcentral
Wisconsin southwestward through
northwestern Iowa. Ahead of the cold
front, over the upper midwest, a very
humid, unstable airmass had set up. By
late morning, a small cluster of
thunderstorms had developed over
northwestern Illinois. These storms
tracked into northcentral Illinois,
reaching their peak intensity over Ogle
County, producing wind gusts up to 58
mph and causing isolated incidents of
damage to trees. This storm cluster
then weakend as it moved eastward.
By early afternoon, more thunderstorms
began to develop over northeastern
Illinois. A small area of strong
thunderstorms initially developed over
Kane and western Will Counties and
rapidly developed into a line of severe
storms extending over the Chicago metro
area. The line of storms rapidly moved
through Du Page, Cook and Will Counties
and into northwestern Indiana. These
storms left a path of wind damage over
southern portions of the Chicago metro
area and into rural sections of
northwestern Indiana. Strong wind gusts
were also measured by coastal observing
stations of Lake Michigan. Numerous
incidents of wind damage were observed,
with a considerable number of trees
knocked down or large limbs torn from
trees. Power poles were knocked down
over many locations.
While the primary threat was strong
winds, there were also isolated reports
of penny to nickel sized hail as well.
Grundy County
4 W Morris 22 1235CST
1240CST
Will County
Plainfield 22 1255CST
Large tree limbs knocked down near
Bronk Rd. and Caton Farm Rd.
Will County
Crest Hill 22 1300CST
Large tree limbs down on Gaylord St.,
south of Division St.
Will County
Joliet 22 1300CST
8 inch diameter tree limbs torn down at
the intersection of Ridge Rd. and
Manhattan Rd., west of Rt. 52.
Kendall County
3 NE Yorkville 22 1320CST
Power lines knocked down on Winding
Creek and Oak Creek Rds, near Rt. 71
between Yorkville and Oswego.
On the morning of July 22, a cold front
extended from central Great Lakes
region, southwestward through southern
Wisconsin and into central Iowa. Ahead
of the frontal boundary, Northern
Illinois and Indiana were very moist,
humid and unstable. In the late morning
morning hours, a line of thunderstorms
crossed the Mississippi River into
western Illinois. This line continued
to develop eastward and by around
1:00PM began to enter Grundy and Will
Counties. The storms had continued to
intensify with their eastward
progression and produced up to penny
sized hail and wind gusts up to 55 kts.
The line of storms then continued into
northwestern Indiana and over southern
Lake Michigan. Isolated incidents of
significant tree and power line damage
were also reported in the storm's path.
INDIANA, Northwest
Lake County
Hobart 03 1445CST
Power lines were torn down. Large tree
limbs and moderate sized trees were
broken off and on top of houses.
Lake County
Griffith 03 1500CST
Power lines and large tree branches
were down across the city.
On the afternoon of July 3, an
upper-level system moving northeastward
from the St. Louis, MO area, across
Illinois, into southern Wisconsin. This
system produced several bands of
showers and thunderstorms, which moved
northeastward across the region. One
band moved through the Chicago metro
area and southern Lake Michigan,
producing isolated large hail and
strong wind gusts.
Lake County
Highland 21 1625CST
1925CST
Street flooding up to the curbs with
portions of 45th St. impassible.
Lake County
1 E Gary 21 1627CST
Trees, limbs and power lines were
reported down.
Porter County
Beverly Slurs 21 1635CST
A 20 foot tree was knocked down and
blocked a road at the Indiana Dunes
National Seashore.
Porter County
Porter 21 1635CST
Tree limbs and power lines were knocked
down.
Newton County
1 N Lake Vlg 21 1715CST
Trees were down on State Road 10, near
Lake Village.
Jasper County
Rensselaer 21 1720CST
1725CST
Lake County
Merrillville 21 1725CST
Trees were damaged and a traffic light
was broken on Rt. 30.
Newton County
Morocco 21 1725CST
Trees were knocked down on 114th St.
Jasper County
2 NW Remington 21 1742CST
1747CST
Jasper County
Wheatfield 21 1750CST
Numerous trees were reported to be
knocked down.
During the morning hours of July 21, a
cold front extended from northcentral
Wisconsin southwestward through
northwestern Iowa. Ahead of the cold
front, over the upper midwest, a very
humid, unstable airmass had set up. By
late morning, a small cluster of
thunderstorms had developed over
northwestern Illinois. These storms
tracked into northcentral Illinois,
reaching their peak intensity over Ogle
County, producing wind gusts up to 58
mph and causing isolated incidents of
damage to trees. This storm cluster
then weakend as it moved eastward.
By early afternoon, more thunderstorms
began to develop over northeastern
Illinois. A small area of strong
thunderstorms initially developed over
the western Chicago suburbs and rapidly
developed into a line of severe storms
extending over the rest of the metro
area. The line of storms rapidly moved
eastward into northwestern Indiana.
These storms left a path of wind damage
over southern and southeastern portions
of the Chicago metro area and into
rural sections of northwestern Indiana.
Strong wind gusts were also measured by
coastal observing stations of Lake
Michigan. Numerous incidents of wind
damage were observed, with a
considerable number of trees knocked
down or large limbs torn from trees.
Power poles were knocked down over many
locations.
While the primary threat was strong
winds, there were also isolated reports
of up to 1 inch diameter hail as well.
Jasper County
2 S Demotte 22 1355CST
Numerous large tree limbs down on
County Rd. 1000N and in the Tanglewood
subdivision.
On the morning of July 22, a cold front
extended from central Great Lakes
region, southwestward through southern
Wisconsin and into central Iowa. Ahead
of the frontal boundary, Northern
Illinois and Indiana were very moist,
humid and unstable. In the late morning
hours, a line of thunderstorms crossed
the Mississippi River into western
Illinois. This line continued to
develop eastward and by around 1:00PM
began to enter Grundy and Will Counties
in northeastern Illinois. The storms
had intensified with their eastward
progression and continued into
northwestern Indiana and over southern
Lake Michigan. Storms produced up to
penny sized hail and wind gusts up to
55 kts in northeastern Illinois. The
line of stones tracked over southern
Lake Michigan and into northwestern
Indiana where they produced wind gusts
up to 50 kts and widespread tree and
power line damage in Jasper County.
LAKE MICHIGAN
Burn Hbr To Michigan
City In
Michigan City 03 1400CST
1500CST
Wilmette Hbr To
Meigs Field Il
Harrison-Dever Crib 03 1400CST
1600CST
Wind gusts of 42 kt and 47 kt were
measured in the coastal waters 3 miles
off-shore.
On the afternoon of July 3, an
upper-level system moving northeastward
from the St. Louis, MO area, across
Illinois, into southern Wisconsin. This
system produced several bands of
showers and thunderstorms, which moved
northeastward across the region. One
band moved through the Chicago metro
area and southern Lake Michigan,
producing isolated large hail and
strong wind gusts.
Calumet Hbr Il To
Gary In
Buffington Harbor 21 1614CST
Wind measured at the Trump Casino boat.
Michigan City In To
New Buffalo Mi
5 SW Michigan City 21 1635CST
A boat capsized 100 yards off of the
Beverly Shores beach.
Michigan City In To
New Buffalo Mi
Michigan City 21 1650CST
Wind gust measured at Michigan City
GLERL observation site.
In the early afternoon of July 21,
thunderstorms began to develop over
northeastern Illinois. A small area of
strong thunderstorms initially
developed over the western Chicago
suburbs and rapidly developed into a
line of severe storms extending over
southern Lake Michigan and the eastern
metro area. The line of storms rapidly
moved eastward into northwestern
Indiana and southeastern Lake Michigan.
Strong wind gusts, up to 60 mph, were
also measured by the coastal observing
stations.
Wilmette Hbr To
Meigs Field Il
Harrison-Dever Crib 22 1240CST
Wind gust measured 3 miles off shore,
east of Chicago.
On the morning of July 22, a cold front
extended from central Great Lakes
region, southwestward through southern
Wisconsin and into central Iowa. Ahead
of the frontal boundary, Northern
Illinois and Indiana were very moist,
humid and unstable. In the late morning
hours, a line of thunderstorms crossed
the Mississippi River into western
Illinois. This line continued to
develop eastward and by around 1:00PM
entered Grundy and Will Counties in
northeastern Illinois. The line of
storms then continued over southern
Lake Michigan. Wind with gusts up to 39
kts measured at the Harrison-Deaver
Crib, 3 miles off shore, east of
downtown Chicago.
Number of Estimated
Persons Damage
Location Killed Injured Property Crops
ILLINOIS, Northeast
Cook County
Alsip 0 0
Large limbs were torn off of trees.
Cook County
Lyons 0 0
A large tree was knocked over on Joliet
Ave.
Du Page County
Lombard 0 0
On the afternoon of July 3, an
upper-level system moving northeastward
from the St. Louis, MO area, across
Illinois, into southern Wisconsin. This
system produced several bands of
showers and thunderstorms, which moved
northeastward across the region. One
band moved through the Chicago metro
area and southern Lake Michigan,
producing isolated large hail and
strong wind gusts.
Livingston County
Fairbury 0 0
Scattered showers and thunderstorms
developed during the afternoon hours
across portions of east-central
Illinois from northern Iroquois County,
westward through the Ford County
panhandle to southeastern Livingston
County. One of these storms, over
Fairbury in Livingston County, rapidly
developed and produced large hail and
heavy rain for a brief time.
Ogle County
Polo 0 0
Lee County
6 NW Dixon to 0 0
1 S Sublette
A swath of hail cut across Lee County,
beginning at 6 miles south of Polo or 6
miles northwest of Dixon, through
Dixon, Amboy, Sublette to 1 mile south
of Sublette. Large hail was observed
throughout this path.
The following reports were received:
4.00 inches in diameter, was observed
by a Farm Service Agent 1 mile south of
Sublette.
2.00 and 1.25 inch hail was observed in
the town of Sublette.
1.00 inch hail in Amboy
2.75 inch hail in Amboy by law
enforcement
0.88 inch hail 6 miles south of Polo
0.75 inch hail in Dixon
Lee County
Amboy 0 0
Wind gust was estimated by a trained
spotter.
Lee County
5 SW Amboy 0 0 20K
A roof was blown off the addition of a
house and into a barn. Many rows of
corn were knocked down. These events
occurred at Bryer Knoll and Rocky Ford.
La Salle County
Mendota 0 0
Several reports of large hail, up to
1.75 inches were observed in Mendota by
trained spotters.
La Salle County
2 NW Peru 0 0
Wind gust estimated by co-op observer,
knocking down trees.
La Salle County
Utica to 0 0
5 WSW Kangley
A swath of hail cut across La Salle
county from North Utica to 5 miles WSW
of Kangley.
The following reports were received:
1.75 inch hail at North Utica
0.75 inch hail at South Utica
1.25 inch hail 2 miles east of Leonore
0.75 inch hail at Leonore
1.00 inch hail 3 miles SW of Grand
Ridge
2.00 inch hail 5 miles W of Streator at
County Road 18.
1.75 inch hail at Streator
2.75 inch hail 5 miles WSW of Kangley
La Salle County
2 E Leonore 0 0
Large limbs torn off of trees by strong
wind gusts.
La Salle County
2 S Ottawa 0 0
Livingston County
Manville 0 0
La Salle County
Streator 0 0
Power lines were torn down and large
limbs were torn off of trees. Trees up
to 12 inches in diameter were knocked
down.
Livingston County
5 NW Manville 0 0
a co-op observer located 1 mile south
of Streator, or 5 miles northwest of
Manville reported 2.00 inch hail.
Livingston County
Chatsworth 0 0
Livingston County
3 SE Forrest 0 0
Iroquois County
Loda 0 0
Large limbs torn off of trees.
Ford County
3 W Paxton to 0 0 100K
Paxton
Widespread damage from the west side of
Paxton where small and medium size tree
limbs were down to about State Road
115, 4 miles west of Paxton. Numerous
large limbs were down, some large trees
snapped of uprooted. Shed roofs and
doors were torn off and barns
collapsed. A building was damaged at
the airport west of town. Damage
extended several miles north and south
of State Road 9, but the worst damage
appeard to be along SR 9 between County
Roads 1500 and 1700.
On the morning of July 13, a strong,
individual thunderstorm developed over
northwestern Illinois. During the late
morning and early afternoon hours, this
storm tracked southeastward,
strengthened and developed into a
cluster of strong storms. This storm
cluster moved through Ogle, Lee, La
Salle and Ford Counties. The eastern
and western extremes of the storm
cluster also affected portions of
Livingston and Iroquois Counties. Lee
and La Salle Counties were primarily
hit with large hail, with up to 4 inch
hail observed near Sublette. However,
there were isolated incidents of wind
damage, primarily to trees and power
lines. By the time the storms got to
Ford County, strong winds were the
major concern. Windspread wind damage
was observed in and around Paxton.
Ogle County
Chana 0 0
Trees knocked down by strong wind
gusts.
Ogle County
Kings 0 0
Large limbs torn off of trees.
Ogle County
Rochelle 0 0
Large limbs torn off of trees.
Kane County
Montgomery 0 0
The hail was reported at the
intersection of Rt. 30 and Rt. 31.
Will County
2 W Bolingbrook to 0 0
Bolingbrook
Tree limbs were reported down at the
intersection of Boughton Rd. and Weber
Rd and trees were knocked down at the
intersection of Royce Rd. and Concord
Rd.
Will County
Plainfield to 0 0
Plaines
A tree fell on to a power line.
Du Page County
Naperville 0 0
A 24 inch diameter tree was knocked
down and a 12 inch branch was torn from
a tree.
Kendall County
3 E Yorkville 0 0
Will County
Romeoville 0 0
The hail was observed Interstate 55 and
Budler Rd.
Du Page County
Woodridge 0 0
Tree limbs were down at the
intersection of Rt. 53 and 75th St.
Cook County
Lemont 0 0
Trees were knocked down on Main St.
between Cortland Rd. and Rt. 83.
Du Page County
Willowbrook 0 0
Large tree limbs were reported down
near Interstate 55 and Rt. 83.
Cook County
Chicago 0 0
Large hail was reported near the
intersection of 64th St. and Maple Ave.
Cook County
Chicago Hgts 0 0
Large tree limbs were reported down.
Cook County
Alsip 0 0
Large limbs, several trees and flag
poles were knocked down.
Cook County
Burbank 0 0
Large tree limbs, trees, power line and
power poles were knocked down.
Cook County
Chicago Lawn to 0 0
Chicago
Large tree limbs were down near 64th
St. and Maple Ave.
Cook County
Bridgeview 0 0
A 7 inch diameter tree was snapped in
half at 87th St. and Roberts Rd.
During the morning hours of July 21, a
cold front extended from northcentral
Wisconsin southwestward through
northwestern Iowa. Ahead of the cold
front, over the upper midwest, a very
humid, unstable airmass had set up. By
late morning, a small cluster of
thunderstorms had developed over
northwestern Illinois. These storms
tracked into northcentral Illinois,
reaching their peak intensity over Ogle
County, producing wind gusts up to 58
mph and causing isolated incidents of
damage to trees. This storm cluster
then weakend as it moved eastward.
By early afternoon, more thunderstorms
began to develop over northeastern
Illinois. A small area of strong
thunderstorms initially developed over
Kane and western Will Counties and
rapidly developed into a line of severe
storms extending over the Chicago metro
area. The line of storms rapidly moved
through Du Page, Cook and Will Counties
and into northwestern Indiana. These
storms left a path of wind damage over
southern portions of the Chicago metro
area and into rural sections of
northwestern Indiana. Strong wind gusts
were also measured by coastal observing
stations of Lake Michigan. Numerous
incidents of wind damage were observed,
with a considerable number of trees
knocked down or large limbs torn from
trees. Power poles were knocked down
over many locations.
While the primary threat was strong
winds, there were also isolated reports
of penny to nickel sized hail as well.
Grundy County
4 W Morris 0 0
Will County
Plainfield 0 0
Large tree limbs knocked down near
Bronk Rd. and Caton Farm Rd.
Will County
Crest Hill 0 0
Large tree limbs down on Gaylord St.,
south of Division St.
Will County
Joliet 0 0
8 inch diameter tree limbs torn down at
the intersection of Ridge Rd. and
Manhattan Rd., west of Rt. 52.
Kendall County
3 NE Yorkville 0 0
Power lines knocked down on Winding
Creek and Oak Creek Rds, near Rt. 71
between Yorkville and Oswego.
On the morning of July 22, a cold front
extended from central Great Lakes
region, southwestward through southern
Wisconsin and into central Iowa. Ahead
of the frontal boundary, Northern
Illinois and Indiana were very moist,
humid and unstable. In the late morning
morning hours, a line of thunderstorms
crossed the Mississippi River into
western Illinois. This line continued
to develop eastward and by around
1:00PM began to enter Grundy and Will
Counties. The storms had continued to
intensify with their eastward
progression and produced up to penny
sized hail and wind gusts up to 55 kts.
The line of storms then continued into
northwestern Indiana and over southern
Lake Michigan. Isolated incidents of
significant tree and power line damage
were also reported in the storm's path.
INDIANA, Northwest
Lake County
Hobart 0 0
Power lines were torn down. Large tree
limbs and moderate sized trees were
broken off and on top of houses.
Lake County
Griffith 0 0
Power lines and large tree branches
were down across the city.
On the afternoon of July 3, an
upper-level system moving northeastward
from the St. Louis, MO area, across
Illinois, into southern Wisconsin. This
system produced several bands of
showers and thunderstorms, which moved
northeastward across the region. One
band moved through the Chicago metro
area and southern Lake Michigan,
producing isolated large hail and
strong wind gusts.
Lake County
Highland 0 0
Street flooding up to the curbs with
portions of 45th St. impassible.
Lake County
1 E Gary 0 0
Trees, limbs and power lines were
reported down.
Porter County
Beverly Slurs 0 0
A 20 foot tree was knocked down and
blocked a road at the Indiana Dunes
National Seashore.
Porter County
Porter 0 0
Tree limbs and power lines were knocked
down.
Newton County
1 N Lake Vlg 0 0
Trees were down on State Road 10, near
Lake Village.
Jasper County
Rensselaer 0 0
Lake County
Merrillville 0 0
Trees were damaged and a traffic light
was broken on Rt. 30.
Newton County
Morocco 0 0
Trees were knocked down on 114th St.
Jasper County
2 NW Remington 0 0
Jasper County
Wheatfield 0 0
Numerous trees were reported to be
knocked down.
During the morning hours of July 21, a
cold front extended from northcentral
Wisconsin southwestward through
northwestern Iowa. Ahead of the cold
front, over the upper midwest, a very
humid, unstable airmass had set up. By
late morning, a small cluster of
thunderstorms had developed over
northwestern Illinois. These storms
tracked into northcentral Illinois,
reaching their peak intensity over Ogle
County, producing wind gusts up to 58
mph and causing isolated incidents of
damage to trees. This storm cluster
then weakend as it moved eastward.
By early afternoon, more thunderstorms
began to develop over northeastern
Illinois. A small area of strong
thunderstorms initially developed over
the western Chicago suburbs and rapidly
developed into a line of severe storms
extending over the rest of the metro
area. The line of storms rapidly moved
eastward into northwestern Indiana.
These storms left a path of wind damage
over southern and southeastern portions
of the Chicago metro area and into
rural sections of northwestern Indiana.
Strong wind gusts were also measured by
coastal observing stations of Lake
Michigan. Numerous incidents of wind
damage were observed, with a
considerable number of trees knocked
down or large limbs torn from trees.
Power poles were knocked down over many
locations.
While the primary threat was strong
winds, there were also isolated reports
of up to 1 inch diameter hail as well.
Jasper County
2 S Demotte 0 0
Numerous large tree limbs down on
County Rd. 1000N and in the Tanglewood
subdivision.
On the morning of July 22, a cold front
extended from central Great Lakes
region, southwestward through southern
Wisconsin and into central Iowa. Ahead
of the frontal boundary, Northern
Illinois and Indiana were very moist,
humid and unstable. In the late morning
hours, a line of thunderstorms crossed
the Mississippi River into western
Illinois. This line continued to
develop eastward and by around 1:00PM
began to enter Grundy and Will Counties
in northeastern Illinois. The storms
had intensified with their eastward
progression and continued into
northwestern Indiana and over southern
Lake Michigan. Storms produced up to
penny sized hail and wind gusts up to
55 kts in northeastern Illinois. The
line of stones tracked over southern
Lake Michigan and into northwestern
Indiana where they produced wind gusts
up to 50 kts and widespread tree and
power line damage in Jasper County.
LAKE MICHIGAN
Burn Hbr To Michigan
City In
Michigan City 0 0
Wilmette Hbr To
Meigs Field Il
Harrison-Dever Crib 0 0
Wind gusts of 42 kt and 47 kt were
measured in the coastal waters 3 miles
off-shore.
On the afternoon of July 3, an
upper-level system moving northeastward
from the St. Louis, MO area, across
Illinois, into southern Wisconsin. This
system produced several bands of
showers and thunderstorms, which moved
northeastward across the region. One
band moved through the Chicago metro
area and southern Lake Michigan,
producing isolated large hail and
strong wind gusts.
Calumet Hbr Il To
Gary In
Buffington Harbor 0 0
Wind measured at the Trump Casino boat.
Michigan City In To
New Buffalo Mi
5 SW Michigan City 0 0 20K
A boat capsized 100 yards off of the
Beverly Shores beach.
Michigan City In To
New Buffalo Mi
Michigan City 0 0
Wind gust measured at Michigan City
GLERL observation site.
In the early afternoon of July 21,
thunderstorms began to develop over
northeastern Illinois. A small area of
strong thunderstorms initially
developed over the western Chicago
suburbs and rapidly developed into a
line of severe storms extending over
southern Lake Michigan and the eastern
metro area. The line of storms rapidly
moved eastward into northwestern
Indiana and southeastern Lake Michigan.
Strong wind gusts, up to 60 mph, were
also measured by the coastal observing
stations.
Wilmette Hbr To
Meigs Field Il
Harrison-Dever Crib 0 0
Wind gust measured 3 miles off shore,
east of Chicago.
On the morning of July 22, a cold front
extended from central Great Lakes
region, southwestward through southern
Wisconsin and into central Iowa. Ahead
of the frontal boundary, Northern
Illinois and Indiana were very moist,
humid and unstable. In the late morning
hours, a line of thunderstorms crossed
the Mississippi River into western
Illinois. This line continued to
develop eastward and by around 1:00PM
entered Grundy and Will Counties in
northeastern Illinois. The line of
storms then continued over southern
Lake Michigan. Wind with gusts up to 39
kts measured at the Harrison-Deaver
Crib, 3 miles off shore, east of
downtown Chicago.
Location Character of Storm
ILLINOIS, Northeast
Cook County
Alsip Thunderstorm Wind (G50)
Large limbs were torn off of trees.
Cook County
Lyons Thunderstorm Wind (G50)
A large tree was knocked over on Joliet
Ave.
Du Page County
Lombard Hail (0.75)
On the afternoon of July 3, an
upper-level system moving northeastward
from the St. Louis, MO area, across
Illinois, into southern Wisconsin. This
system produced several bands of
showers and thunderstorms, which moved
northeastward across the region. One
band moved through the Chicago metro
area and southern Lake Michigan,
producing isolated large hail and
strong wind gusts.
Livingston County
Fairbury Hail (1.00)
Scattered showers and thunderstorms
developed during the afternoon hours
across portions of east-central
Illinois from northern Iroquois County,
westward through the Ford County
panhandle to southeastern Livingston
County. One of these storms, over
Fairbury in Livingston County, rapidly
developed and produced large hail and
heavy rain for a brief time.
Ogle County
Polo Hail (1.00)
Lee County
6 NW Dixon to Hail (4.00)
1 S Sublette
A swath of ha