Several rounds of showers and thunderstorms moved across eastern Iowa, northwest Illinois and northeast Missouri producing torrential rains, high winds, and hail.
Every event with a place to put it. Tap one for its entry below.
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.
The episode as NWS DVN wrote it up.
Several rounds of showers and thunderstorms moved across eastern Iowa, northwest Illinois and northeast Missouri producing torrential rains, high winds, and hail.
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, 1 hour 59 minutes earlier.
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.
&&
MAYESHAZARDOUS 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
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
718 AM CDT THU AUG 23 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
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.
&&
ELLIOTTPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
744 AM CDT THU AUG 23 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0743 AM HEAVY RAIN PARK VIEW 41.69N 90.54W
08/23/2007 M2.20 INCH SCOTT IA NWS EMPLOYEE
24 HOUR TOTAL.
&&
ELLIOTTPRELIMINARY 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.
&&
ELLIOTTPRELIMINARY 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
&&
RAYWPRELIMINARY 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
&&
ELLIOTTPRELIMINARY 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.
&&
RAYWThe Quad Cities radar (KDVN), 100 km away, was scanning. The volume nearest the first event began at 17:43 UTC.
13 thunderstorm wind, 4 flash flood, 2 hail. Local standard time, as filed.
Winds estimated to be 65 mph blew down a tree limb measuring 15 inches in diameter in Burlington, IA.
Heavy rains produced flood waters covering the 15600 block of 305th Street northwest of Long Grove, IA.
Winds estimated to be 65 mph blew down a tree onto some power lines on Newell Ave in Muscatine, IA.
Hail the size of a nickel fell in Muscatine, IA.
Wind gusts were estimated to be between 50 and 60 mph in Muscatine, IA.
Winds estimated to be 70 mph destroyed a gazebo and blew down numerous trees in Hedrick, IA.
Hail the size of a nickel fell in Batavia, IA.
The AWOS site at Fairfield, IA measured a wind gust of 61 mph.|
Winds estimated to be 60 mph blew down some branches just south of Libertyville, IA.
Winds were estimated to be 50 to 60 mph about 6 miles south of Fairfield, IA.
Winds estimated to be 60 mph pushed a truck across a parking lot in Birmingham, IA.
Winds estimated to be 65 mph blew down a tree on Mill Street in Coppock, IA.|
Winds estimated to be 60 mph blew down power lines and tree branches in Fairfield, IA.
Winds estimated to be 65 mph blew down a tree in Mount Pleasant, IA.|
Winds were estimated to be gusting up to 60 mph.
Winds estimated to be 60 mph blew away two stop signs near the intersection of 170th Street and Highway 218 about 7 miles north of Mount Pleasant.
Flood waters covered Highway 1 just south of Fairfield, IA.
Flood waters covered Highway 1 about 6 miles south of Fairfield, IA.|
Flood waters covered some roads across the western part of Lee County forcing the closure of 110th Street near Houghton, IA and parts of Highway 16 west of Highway 27. The Des Moines River level along Croton Road near Croton was running high, threatening the closure of Croton Rd.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2007Every state in 2007This day in weather historyWarnings in Iowa, August 2007
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: 57126, 57130, 57135, 57136, 57138, 57141, 57143, 57148, 57153, 57192, 57157, 57158, 57163, 57168, 57169, 57174, 57182, 57184, 57189.