Hail and Damaging Winds in Illinois, August 23, 2007

Name: Hail and Damaging Winds in Illinois, August 23, 2007
Start: 2007-08-23T11:54
End: 2007-08-23T18:06
Location: Illinois

August 23, 2007 · NWS DVN · 16 events in 6 counties and zones

Several rounds of showers and thunderstorms moved across eastern Iowa, northwest Illinois and northeast Missouri producing high winds and hail. The area hardest hit was Kirkwood, IL where winds were estimated to be 100 mph.

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: $310,000
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 happened

The episode as NWS DVN wrote it up.

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 Quad Cities, IA wrote its last area forecast discussion before the first event at Aug 23, 9:44 AM CST, 2 hours 10 minutes earlier.

Area forecast discussion, Aug 23, 9:44 AM CST, 2 hours 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1044 AM CDT THU AUG 23 2007

.UPDATE...
TWEAKED FORECAST FOR THE REMAINDER OF TODAY...WITH MINOR CHANGES
TO THE GRIDS. PER IR SATELLITE IMAGERY...CLOUD TOPS ARE COOLING IN
ASSOCIATION WITH TSRA ACROSS CENTRAL IA. ACTIVITY DEVELOPED ON THE
NOSE OF THE STRONG/PERSISTENT 850MB JET...WITH PROFILERS
INDICATING WINDS STILL 40-45KT ACROSS OK/KS AND UP TO 30 KT IN
IA/IL. SOME 850MB CONVERGENCE WAS NOTED AS WINDS IN WI ARE ONLY
ABOUT 15 KT. AT 12Z...850MB LOW WAS ANALYZED OVER NERN NEB...WITH
SFC REFLECTION STILL EVIDENT AT 15Z ALONG WITH SFC PRESSURE FALLS
IN NWRN IA. MLCAPE/CIN FIELDS INDICATE QUITE A BIT OF STABILITY
NEAR THE GROUND STILL...THOUGH INSTABILITY WAS STARTING TO BUILD
IN THE MO RIVER VALLEY NEAR THE NEB/KS/MO BORDER AREA AS WELL AS
IN ERN IA/NWRN IL AHEAD OF ONGOING STORMS. SEVERE THREAT REMAINS
IN THE REGION AS ONGOING TSRA MOVE INTO BETTER INSTABILITY...AS
WELL AS POSSIBLY LATER THIS AFTERNOON/EVENING WITH ANY ACTIVITY
THAT DEVELOPS IN THE MO RIVER VALLEY AREA AND MOVES ACROSS. HEAVY
RAIN THREAT IS STILL PRESENT AS WELL...PARTICULARLY WITH HEAVY
RAINS LAST NIGHT KEEPING THE GROUND SATURATED IN THE I-80 CORRIDOR
AS WELL AS IN THE NRN CWA.

&&

.DVN WATCHES/WARNINGS/ADVISORIES...
IA...FLASH FLOOD WATCH FROM 7 PM CDT THIS EVENING THROUGH FRIDAY
     EVENING FOR KEOKUK-LOUISA-MUSCATINE-SCOTT-WASHINGTON.

     FLASH FLOOD WATCH THROUGH FRIDAY EVENING FOR BENTON-BUCHANAN-
     CEDAR-CLINTON-DELAWARE-DUBUQUE-IOWA-JACKSON-JOHNSON-JONES-
     LINN.

IL...FLASH FLOOD WATCH FROM 7 PM CDT THIS EVENING THROUGH FRIDAY
     EVENING FOR ROCK ISLAND-WHITESIDE.

     FLASH FLOOD WATCH THROUGH FRIDAY EVENING FOR CARROLL-JO DAVIESS-
     STEPHENSON.

MO...NONE.
&&

MAYES

Hazardous weather outlook, Aug 23, 9:55 AM CST, 1 hour 59 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1055 AM CDT THU AUG 23 2007

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-241600-
BUCHANAN-DELAWARE-DUBUQUE-BENTON-LINN-JONES-JACKSON-IOWA-JOHNSON-
CEDAR-CLINTON-MUSCATINE-SCOTT-KEOKUK-WASHINGTON-LOUISA-JEFFERSON-
HENRY IA-DES MOINES-VAN BUREN-LEE-JO DAVIESS-STEPHENSON-CARROLL-
WHITESIDE-ROCK ISLAND-HENRY IL-BUREAU-PUTNAM-MERCER-HENDERSON-
WARREN-HANCOCK-MCDONOUGH-SCOTLAND-CLARK-
1055 AM CDT THU AUG 23 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
ILLINOIS...NORTHWEST ILLINOIS...WEST CENTRAL ILLINOIS...EAST
CENTRAL IOWA...NORTHEAST IOWA...SOUTHEAST IOWA AND NORTHEAST
MISSOURI.

.DAY ONE...TODAY AND TONIGHT

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS TODAY AND THIS
EVENING ACROSS THE AREA...AS WELL AS A POTENTIAL FOR HEAVY RAIN
AND FLASH FLOODING. THUNDERSTORMS MOVING ACROSS CENTRAL IOWA INTO
THE AREA TODAY MAY BECOME MORE ORGANIZED...WITH A POTENTIAL FOR
THE STORMS TO BECOME SEVERE MAINLY EAST OF THE MISSISSIPPI BY
EARLY AFTERNOON. THUNDERSTORMS ARE EXPECTED TO DEVELOP TO THE WEST
AND MOVE INTO THE AREA LATER TODAY AND THROUGH THE OVERNIGHT HOURS
AS WELL. THE PRIMARY THREAT FROM ANY STORMS WILL BE FROM HEAVY
RAIN AND DAMAGING WINDS...WITH A SMALLER RISK FOR LARGE HAIL.

RISES TO FLOOD STAGE ARE OCCURRING ON ILLINOIS TRIBUTARY
RIVERS...PARTICULARLY ON THE ROCK RIVER.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ON FRIDAY. PERIODS
OF THUNDERSTORMS WILL PERSIST ACROSS THE AREA...WITH OVERNIGHT
THUNDERSTORMS ENDING IN THE MORNING...THEN STORMS DEVELOPING AND
MOVING ACROSS AGAIN IN THE AFTERNOON AND EVENING HOURS. THE
PRIMARY RISKS FROM STORMS TOMORROW WILL BE FROM HEAVY RAIN AND
DAMAGING WINDS.

SEVERAL IOWA AND ILLINOIS TRIBUTARY RIVERS...AS WELL AS THE
MAINSTEM MISSISSIPPI RIVER...WILL APPROACH OR MAINTAIN RIVER
LEVELS ABOVE FLOOD STAGE BY THE END OF THE WEEK. THE AMOUNT OF
RISE WILL DEPEND VERY STRONGLY HOW MUCH RAIN FALLS OVER THE NEXT
COUPLE OF DAYS...AND WHERE IT FALLS. IN GENERAL...MINOR TO
MODERATE FLOODING IS EXPECTED ON SEVERAL TRIBUTARY RIVERS...WITH
MINOR FLOODING POSSIBLE ALONG THE MISSISSIPPI RIVER.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS POSSIBLE TODAY AND TONIGHT. IN
ADDITION...SPOTTERS ARE ENCOURAGED TO CALL IN REPORTS OF RAINFALL
OVER 1 INCH AS WELL AS ANY FLOODING.

MAYES

In the hours before

Local storm report, Aug 23, 7:22 AM CST, 4 hours 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
822 AM CDT THU AUG 23 2007

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

0600 AM     HEAVY RAIN       ELDRIDGE                41.64N 90.57W
08/23/2007  M2.59 INCH       SCOTT              IA   NWS EMPLOYEE

            TOTAL SINCE 6 PM.

&&

ELLIOTT

Local storm report, Aug 23, 7:30 AM CST, 4 hours 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
830 AM CDT THU AUG 23 2007

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

0829 AM     HEAVY RAIN       PARK VIEW               41.69N 90.54W
08/23/2007  M2.47 INCH       SCOTT              IA   NWS EMPLOYEE

            SINCE 6PM LAST NIGHT

&&

RAYW

Local storm report, Aug 23, 8:11 AM CST, 3 hours 43 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
911 AM CDT THU AUG 23 2007

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

0600 AM     HEAVY RAIN       ELDRIDGE                41.64N 90.57W
08/23/2007  M2.59 INCH       SCOTT              IA   NWS EMPLOYEE

            TOTAL SINCE 6 PM.

0615 AM     FLOOD            5 E CEDAR RAPIDS        41.97N 91.58W
08/23/2007                   LINN               IA   TRAINED SPOTTER

            INDIAN CREEK FLOWING BACKWARDS DUE TO HIGH LEVEL OF WATER
            IN CEDAR RIVER DOWNSTREAM.

0700 AM     HEAVY RAIN       1 N GERMAN VALLEY       42.22N 89.47W
08/23/2007  M1.26 INCH       STEPHENSON         IL   TRAINED SPOTTER

0715 AM     HEAVY RAIN       4 E WHAT CHEER          41.41N 92.28W
08/23/2007  M1.11 INCH       KEOKUK             IA   TRAINED SPOTTER

            24 HOUR AMOUNT.

0743 AM     HEAVY RAIN       PARK VIEW               41.69N 90.54W
08/23/2007  M2.20 INCH       SCOTT              IA   NWS EMPLOYEE

            24 HOUR TOTAL.

0829 AM     HEAVY RAIN       PARK VIEW               41.69N 90.54W
08/23/2007  M2.47 INCH       SCOTT              IA   NWS EMPLOYEE

            SINCE 6PM LAST NIGHT

&&

ELLIOTT

Local storm report, Aug 23, 9:52 AM CST, 2 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1052 AM CDT THU AUG 23 2007

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

0125 AM     TSTM WND DMG     2 S MCCAUSLAND          41.71N 90.45W
08/23/2007                   SCOTT              IA   PUBLIC

            2-3 INCH TREE LIMBS BLOWN DOWN, TIME ESTIMATED. 2.25
            INCHES OF RAIN OVERNIGHT.

&&

RAYW

Local storm report, Aug 23, 11:48 AM CST, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1248 PM CDT THU AUG 23 2007

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

1242 PM     TSTM WND GST     1 S BURLINGTON          40.79N 91.12W
08/23/2007  M50 MPH          DES MOINES         IA   TRAINED SPOTTER

&&

RAYW

Local storm report, Aug 23, 11:51 AM CST, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
1251 PM CDT THU AUG 23 2007

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

1243 PM     TSTM WND DMG     BURLINGTON              40.81N 91.12W
08/23/2007                   DES MOINES         IA   TRAINED SPOTTER

            15 INCH TREE LIMB DOWN

&&

RAYW

The radar

The Quad Cities radar (KDVN), 84 km away, was scanning. The volume nearest the first event began at 17:55 UTC.

Open the radar archive at this moment

Event by event

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

Thunderstorm Wind, Warren

When: August 23, 11:54 AM CST to 12:05 PM CST
Where: Warren County, Kirkwood
Measured: 87 kt (100 mph) estimated gust
Property damage: $250,000
Reported by: Emergency Manager
Coordinates: 40.870, -90.750

Straight-line winds estimated to be around 100 mph blew down several large trees, ripped part of a roof off a house, displaced and dented several grain silos, and flattened numerous corn fields between Kirkwood, IL and Monmouth, IL. Some of the trees fell onto houses and other structures (EF Scale rating: EF1).

Thunderstorm Wind, Warren

When: August 23, 12:08 PM CST
Where: Warren County, 0.87 mi SW of Monmouth
Measured: 70 kt (81 mph) estimated gust
Property damage: $10,000
Reported by: Emergency Manager
Coordinates: 40.910, -90.640

Winds estimated to be 80 mph blew down several trees and power lines in Monmouth, IL.

Thunderstorm Wind, Warren

When: August 23, 12:08 PM CST
Where: Warren County, Smithshire
Measured: 70 kt (81 mph) estimated gust
Property damage: $10,000
Reported by: Emergency Manager
Coordinates: 40.800, -90.780

Winds estimated to be 80 mph blew down several trees and power lines in Smithshire, IL.

Thunderstorm Wind, Henderson

When: August 23, 12:25 PM CST
Where: Henderson County, 0.52 mi E of Biggsville
Measured: 70 kt (81 mph) estimated gust
Property damage: $25,000
Reported by: Emergency Manager
Coordinates: 40.850, -90.860

Winds estimated to be 70 mph blew down several trees in Biggsville, IL. A house and car were damaged. Delayed report. Time of report corrected from previous issuance indicating 1:25 AM.

Thunderstorm Wind, Henderson

When: August 23, 12:30 PM CST
Where: Henderson County, 2.14 mi SSE of Biggsville
Measured: 61 kt (70 mph) estimated gust
Property damage: $10,000
Reported by: Emergency Manager
Coordinates: 40.821, -90.854

Winds estimated to be 70 mph blew down several trees just south of Biggsville, IL. Several trees were blocking highways 94 and 96 as well as some township roads. Delayed report.

Thunderstorm Wind, Whiteside

When: August 23, 12:45 PM CST
Where: Whiteside County, 0.69 mi N of Albany
Measured: 56 kt (64 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 41.790, -90.220

Winds estimated to be 65 mph blew down a tree in Albany, IL.

Thunderstorm Wind, Whiteside

When: August 23, 12:45 PM CST
Where: Whiteside County, 0.52 mi E of Fulton
Measured: 56 kt (64 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 41.870, -90.160

Winds estimated to be 65 mph blew down a tree in Fulton, IL.

Thunderstorm Wind, Bureau

When: August 23, 1:00 PM CST
Where: Bureau County, 1.38 mi S of Buda
Measured: 52 kt (60 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 41.310, -89.680

Winds estimated to be 60 mph blew down some small trees and tree limbs just south of Buda, IL. Delayed report.

Thunderstorm Wind, Putnam

When: August 23, 1:08 PM CST
Where: Putnam County, 0.87 mi SW of Magnolia
Measured: 61 kt (70 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 41.110, -89.210

Winds estimated to be 70 mph blew down several trees across Route 18 near Magnolia, IL.

Thunderstorm Wind, Putnam

When: August 23, 1:15 PM CST
Where: Putnam County, 2 mi S of Mc Nabb
Measured: 61 kt (70 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 41.151, -89.220

Winds estimated to be 70 mph blew down several trees across roadways just south of McNabb, IL.

Thunderstorm Wind, Putnam

When: August 23, 1:16 PM CST
Where: Putnam County, 3.79 mi SSW of Florid
Measured: 61 kt (70 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 41.180, -89.310

Winds estimated to be 70 mph blew down several trees down across Route 26 west of McNabb, IL.

Thunderstorm Wind, Putnam

When: August 23, 1:28 PM CST
Where: Putnam County, 0.52 mi E of Mc Nabb
Measured: 61 kt (70 mph) estimated gust
Reported by: Law Enforcement
Coordinates: 41.180, -89.210

Winds estimated to be 70 mph blew down several trees near McNabb, IL.

Thunderstorm Wind, Putnam

When: August 23, 1:29 PM CST
Where: Putnam County, 0.69 mi S of Magnolia
Measured: 61 kt (70 mph) estimated gust
Property damage: $5,000
Reported by: Law Enforcement
Coordinates: 41.110, -89.200

Winds estimated to be 70 mph blew down some power lines near Magnolia, IL.

Thunderstorm Wind, Bureau

When: August 23, 4:37 PM CST
Where: Bureau County, 0.69 mi N of Princeton
Measured: 52 kt (60 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 41.380, -89.470

Winds estimated to be 60 mph blew down some tree branches and small limbs near Princeton, IL.

Thunderstorm Wind, Rock Island

When: August 23, 4:43 PM CST
Where: Rock Island County, 0.86 mi NW of Andalusia
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 41.440, -90.730

Winds estimated to be 60 mph blew down some branches near Andalusia, IL.

Hail, Putnam

When: August 23, 6:06 PM CST
Where: Putnam County, 3.42 mi WNW of Magnolia
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 41.140, -89.260

Hail the size of a nickel fell about 4 miles southwest of McNabb, IL.

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 2007 Every state in 2007 This day in weather history Warnings in Illinois, August 2007

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: 57030, 57032, 57033, 57037, 57043, 57045, 57047, 57048, 57050, 57057, 57059, 57062, 57065, 57067, 57069, 57072.