Hail and Damaging Winds in Illinois, August 3, 2006

Name: Hail and Damaging Winds in Illinois, August 3, 2006
Start: 2006-08-03T03:00
End: 2006-08-03T04:30
Location: Illinois

August 3, 2006 · NWS LOT · 16 events in 9 counties and zones

15 thunderstorm wind, 1 hail, as filed by the National Weather Service.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: $2,000
Crop damage: None recorded
Events: 16

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Chicago, IL wrote its last area forecast discussion before the first event at Aug 3, 1:00 AM CST, 2 hours earlier.

Area forecast discussion, Aug 3, 1:00 AM CST, 2 hours before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
200 AM CDT THU AUG 3 2006

.DISCUSSION FOR MORNING GRIDS/ZONES...
200 AM CDT

COLD FRONT AS OF 06Z STRETCHING FROM EVANSTON TO AMBOY. TSRA STILL
HOLDING STRONG ON THE NOSE OF A LOW LEVEL THERMAL RIDGE...ALONG
WHICH SFC TEMPS ARE STILL IN THE LOWER 80S FROM ROCHELLE SOUTHWARD.
SOME EARLY CONCERN FOR ISOLD STRONG WIND ESPECIALLY AS MCS NOW
CROSSING THE MISSISSIPPI RIVER APPROACHES FROM THE SW. GREATER
PROBABILITY HAZARD SHOULD BE RAINFALL AND POTENTIAL FOR GENERALLY
MINOR FLOODING THROUGH THE MORNING GENERALLY SOUTH OF I-80...HOWEVER
THE 35KT EWD PROPAGATION OF MCS AND SLOW SOUTHWARD DRIFT OF COLD
FRONT SHOULD LIMIT DURATION OF HEAVY RAINFALL AT ANY ONE LOCATION.
SOUTHWARD FRONTAL SURGE BEHIND THE MCS WILL BRING THE BOUNDARY JUST
SOUTH OF THE CWA BY NOON.

HIGH PRESSURE BUILDING INTO THE MIDWEST LATE THURSDAY WILL
OVERSPREAD MUCH OF THE GREAT LAKES BY FRIDAY. LOCAL SKIES WILL CLEAR
THROUGH THIS EVENING AND OVERNIGHT. GRADUAL WARM UP THROUGH SUNDAY
AHEAD OF THE NEXT COLD FRONT WHICH IS DUE TO ARRIVE LATE SUNDAY
NIGHT. THE LOW CHANCE POPS FOR SUNDAY NIGHT AND MONDAY STILL SEEMS
WARRANTED...AS THE GFS HAS BEEN REMARKABLY CONSISTENT WITH THE
TIMING OF THE FROPA FOR THE LAST COUPLE DAYS.

HIGH PRESSURE DIPS DOWN OUT OF THE PRAIRIE PROVINCES INTO THE UPPER
LAKES EARLY NEXT WEEK TO PROVIDE A REINFORCING SHOT OF MORE
SEASONALLY MILD AIR AND DRY CONDITIONS.

RRH

&&

.AVIATION...
1238 AM CDT

WILL KEEP THE THUNDERSTORMS IN THE MIDWAY FORECAST FOR ANOTHER HOUR.
THE OTHER AIRPORTS WILL HAVE MVFR CLOUDS MOVING IN. THE FRONT IS
EXPECTED DRIFT SOUTH.  SOME THUNDERSTORMS MAY MOVE INTO THE AREA BY
MORNING. THIS IS WITH A MCS OVER MISSOURI MAY MOVE INTO NORTHEAST
ILLINOIS. WE EXPECT THE THUNDERSTORMS TO BE SOUTH OF TAF AREAS.
WILL WATCH AND SEE WHAT THIS MCS DOES. AS THE FRONT DRIFT SOUTH SO
WE EXPECT THE WIND TO BECOME NORTHEAST THIS MORNING AND DURING THE
DAY. THE MVFR CEILINGS MAY BREAK BY 12 UTC.

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
.IL...NONE.
.IN...NONE.
.LM...NONE.

&&

Hazardous weather outlook, Aug 2, 6:15 PM CST, 8 hours 45 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
715 PM CDT WED AUG 2 2006

ILZ003>006-008-010>014-019>022-023-032-033-039-INZ001-002-010-011-
019-030930-
WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DU PAGE-COOK-
LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-FORD-
LAKE IN-PORTER-NEWTON-JASPER-BENTON-
715 PM CDT WED AUG 2 2006

THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL
AND NORTHEAST ILLINOIS...AND NORTHWEST INDIANA.

.DAY ONE... TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE OUTLOOK
AREA THIS EVENING. THUNDERSTORMS HAVE DEVELOPED ACROSS NORTHERN
ILLINOIS ALONG AND JUST AHEAD OF AN APPROACHING COLD FRONT.
THUNDERSTORMS WILL SPREAD SOUTHEAST ACROSS NORTHEAST ILLINOIS AND
NORTHWEST INDIANA THIS EVENING AS THE FRONT CONTINUES TO SAG ACROSS
THE OUTLOOK AREA. DAMAGING WINDS AND LOCALLY HEAVY RAINFALL WILL BE
POSSIBLE WITH THESE STORMS.

.DAYS TWO THROUGH SEVEN... THURSDAY THROUGH TUESDAY

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THURSDAY...GENERALLY
ALONG AND SOUTH OF A LINE FROM BLOOMINGTON ILLINOIS TO RENSSELAER
INDIANA. THE MAIN SEVERE WEATHER THREAT IS EXPECTED TO BE DAMAGING
WINDS...AS WELL AS LOCALLY HEAVY RAINFALL. SCATTERED THUNDERSTORMS
ARE POSSIBLE ACROSS THE NORTHERN PARTS OF THE OUTLOOK AREA
ESPECIALLY DURING THE MORNING HOURS...BUT WIDESPREAD OR ORGANIZED
SEVERE WEATHER IS EXPECTED NORTH OF THE COLD FRONT.

THERE IS ANOTHER CHANCE OF THUNDERSTORMS SUNDAY NIGHT AND MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY LATE THIS AFTERNOON AND THIS
EVENING.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE
NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE)

LMZ740>745-766-030930-
WINTHROP HARBOR IL TO MICHIGAN CITY IN-
LAKE MICHIGAN-
715 PM CDT WED AUG 2 2006

THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS
AND INDIANA WATERS OF LAKE MICHIGAN.

.DAY ONE... TONIGHT

THERE IS A SLIGHT RISK OF SEVERE STORMS ACROSS SOUTHERN LAKE
MICHIGAN THIS EVENING. SCATTERED THUNDERSTORMS WILL CONTINUE TO
SPREAD SOUTHEAST ACROSS SOUTHERN LAKE MICHIGAN THROUGH THIS EVENING.
DAMAGING WINDS ARE THE MAIN THREAT WITH THESE STORMS.

.DAYS TWO THROUGH SEVEN... THURSDAY THROUGH TUESDAY

SMALL CRAFT ADVISORY CONDITIONS MAY DEVELOP THURSDAY AS NORTH WINDS
GUST TO NEAR 20 KNOTS...WITH WAVES UP TO 5 FEET. WINDS AND WAVES
WILL DECREASE THURSDAY EVENING.

SCATTERED THUNDERSTORMS ARE POSSIBLE INTO THURSDAY ACROSS SOUTHERN
LAKE MICHIGAN...MAINLY DURING THE MORNING HOURS.

THERE IS ANOTHER CHANCE OF THUNDERSTORMS SUNDAY NIGHT AND MONDAY.

&&

COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE
NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE)

RATZER

In the hours before

Local storm report, Aug 2, 9:02 PM CST, 5 hours 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1002 PM CDT WED AUG 02 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1000 PM     TSTM WND GST     SCHERERVILLE            41.49N 87.45W
08/02/2006  E60 MPH          LAKE               IN   TRAINED SPOTTER

            ESTIMATED WINDS AT 60 MPH WITH UNKNOWN DEBRIS.

&&

STACHNIK

Local storm report, Aug 2, 9:49 PM CST, 5 hours 11 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
1049 PM CDT WED AUG 02 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0801 PM     HAIL             3 S UTICA               41.30N 89.01W
08/02/2006  E0.75 INCH       LA SALLE           IL   TRAINED SPOTTER

            PENNY SIZE HAIL LASTED FOR 3 MINUTES AT MATTHIESSEN STATE
            PARK. WINDS ESTIMATED 45 TO 50 MPH.

0837 PM     TSTM WND GST     3 N MINOOKA             41.49N 88.26W
08/02/2006  E60.00 MPH       KENDALL            IL   TRAINED SPOTTER

            WIND GUST ESTIMATED TO 60 MPH ON RIDGE ROAD IN SOUTHEAST
            KENDALL COUNTY.

0924 PM     TSTM WND DMG     FRANKFORT               41.50N 87.84W
08/02/2006                   WILL               IL   LAW ENFORCEMENT

            TREES BLOWN DOWN AT ROUTE 30 AND WOLF ROAD. TIME
            ESTIMATED.

0929 PM     TSTM WND DMG     MATTESON                41.51N 87.74W
08/02/2006                   COOK               IL   TRAINED SPOTTER

            SIX TO EIGHT INCH DIAMETER TREE LIMBS BLOWN DOWN AT 216TH
            AND GOVERNORS HIGHWAY. WINDS ESTIMATED 60 MPH.

0929 PM     TSTM WND DMG     MATTESON                41.51N 87.74W
08/02/2006                   COOK               IL   TRAINED SPOTTER

            EIGHT TO TEN TREES BLOWN DOWN ON 216TH STREET BLOCKING
            THE ROAD. POWER LINES ALSO BLOWN DOWN.

1000 PM     TSTM WND GST     SCHERERVILLE            41.49N 87.45W
08/02/2006  E60.00 MPH       LAKE               IN   TRAINED SPOTTER

            ESTIMATED WINDS AT 60 MPH WITH UNKNOWN DEBRIS.

&&

The radar

The Chicago radar (KLOT), 87 km away, was scanning. The volume nearest the first event began at 09:02 UTC.

Open the radar archive at this moment

Event by event

15 thunderstorm wind, 1 hail. Local standard time, as filed.

Thunderstorm Wind, La Salle

When: August 3, 3:00 AM CST
Where: La Salle County, 4 mi S of Mendota
Measured: 50 kt (58 mph) estimated gust
Reported by: EMERGENCY MANAGER
Coordinates: 41.500, -89.117

A tree was blown down on Route 251.

Thunderstorm Wind, Lee

When: August 3, 3:05 AM CST
Where: Lee County, Compton
Measured: 50 kt (58 mph) estimated gust
Reported by: LAW ENFORCEMENT
Coordinates: 41.700, -89.083

Trees were blown down along Route 30.

Hail, La Salle

When: August 3, 3:08 AM CST to 3:10 AM CST
Where: La Salle County, Ottawa
Measured: 0.75 in hail
Reported by: TRAINED SPOTTER
Coordinates: 41.350, -88.850

Thunderstorm Wind, La Salle

When: August 3, 3:09 AM CST
Where: La Salle County, Ottawa
Measured: 52 kt (60 mph) estimated gust
Reported by: TRAINED SPOTTER
Coordinates: 41.350, -88.850

Wind gusts were estimated to 60 mph.

Thunderstorm Wind, De Kalb

When: August 3, 3:15 AM CST
Where: De Kalb County, Shabbona
Measured: 50 kt (58 mph) estimated gust
Reported by: GENERAL PUBLIC
Coordinates: 41.767, -88.867

Trees were blown down.

Thunderstorm Wind, De Kalb

When: August 3, 3:30 AM CST
Where: De Kalb County, Sandwich
Measured: 50 kt (58 mph) estimated gust
Reported by: LAW ENFORCEMENT
Coordinates: 41.650, -88.617

Tree damage reported in Sandwich.

Thunderstorm Wind, La Salle

When: August 3, 3:35 AM CST
Where: La Salle County, Leland
Measured: 50 kt (58 mph) estimated gust
Reported by: EMERGENCY MANAGER
Coordinates: 41.617, -88.800

A large tree was blown down at the intersection of Main and Hall Streets.

Thunderstorm Wind, Kendall

When: August 3, 3:35 AM CST
Where: Kendall County, 3 mi SW of Plano
Measured: 50 kt (58 mph) estimated gust
Reported by: EMERGENCY MANAGER
Coordinates: 41.633, -88.567

A five inch diameter tree limb was blown down blocking a road.

Thunderstorm Wind, La Salle

When: August 3, 3:35 AM CST
Where: La Salle County, 5 mi SW of Ottawa
Measured: 50 kt (58 mph) estimated gust
Reported by: EMERGENCY MANAGER
Coordinates: 41.300, -88.917

Trees blown down along Jack Dougherty Road.

Thunderstorm Wind, La Salle

When: August 3, 3:35 AM CST
Where: La Salle County, 1 mi W of Utica
Measured: 50 kt (58 mph) estimated gust
Property damage: $2,000
Reported by: EMERGENCY MANAGER
Coordinates: 41.333, -89.033

Trees and power lines blown down along 3150th.

Thunderstorm Wind, Ogle

When: August 3, 3:48 AM CST
Where: Ogle County, Polo
Measured: 50 kt (58 mph) estimated gust
Reported by: LAW ENFORCEMENT
Coordinates: 41.983, -89.583

Trees blown down near the intersection of Hickory and Penn Roads.

Thunderstorm Wind, Will

When: August 3, 3:57 AM CST
Where: Will County, Plainfield
Measured: 52 kt (60 mph) estimated gust
Reported by: TRAINED SPOTTER
Coordinates: 41.600, -88.200

Wind gusts were estimated to 60 mph.

Thunderstorm Wind, Du Page

When: August 3, 4:00 AM CST
Where: Du Page County, Naperville
Measured: 50 kt (58 mph) estimated gust
Reported by: TRAINED SPOTTER
Coordinates: 41.783, -88.150

Six to twelve inch diameter tree limbs were blown down at Winfield and Jewell Roads.

Thunderstorm Wind, Du Page

When: August 3, 4:05 AM CST
Where: Du Page County, 2 mi S of Westmont
Measured: 52 kt (60 mph) estimated gust
Reported by: TRAINED SPOTTER
Coordinates: 41.767, -87.967

Wind gusts were estimated to 60 mph.

Thunderstorm Wind, Kane

When: August 3, 4:12 AM CST
Where: Kane County, Aurora
Measured: 50 kt (58 mph) estimated gust
Reported by: TRAINED SPOTTER
Coordinates: 41.767, -88.317

A five inch diameter tree limb was blown down near Normantown and Montgomery Roads.

Thunderstorm Wind, Cook

When: August 3, 4:30 AM CST
Where: Cook County, Chicago
Measured: 55 kt (63 mph) estimated gust
Reported by: EMERGENCY MANAGER
Coordinates: 41.833, -87.650

Several trees blown down mainly across southern parts of Chicago.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Illinois in 2006 Every state in 2006 This day in weather history Warnings in Illinois, August 2006

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5525416, 5525417, 5525419, 5525418, 5525420, 5525421, 5525422, 5525423, 5525424, 5525425, 5525426, 5525427, 5525428, 5525429, 5525430, 5525431.