Several rounds of showers and thunderstorms moved across southeast Iowa and northeast Missouri producing torrential rains with rainfall totals of 3 to 8 inches not uncommon. This resulted in flash flooding and rapidly rising river levels.
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 southeast Iowa and northeast Missouri producing torrential rains with rainfall totals of 3 to 8 inches not uncommon. This resulted in flash flooding and rapidly rising river levels.
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 24, 2:35 AM CST, 6 hours earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE QUAD CITIES IA IL 335 AM CDT FRI AUG 24 2007 .DISCUSSION... 00Z UA ANALYSIS SHOWED A MOISTURE RICH SWLY H8 FLOW FROM THE SRN PLAINS THROUGH THE MID MS VALLEY...JUST SOUTH OF A WK H8 FRONT OVER NW IA. AT H5 THE MAIN MID LEVEL TROF WAS OVER THE ROCKIES WITH A COUPLE OF WEAK IMPULSES AHEAD OF THE MAIN TROF OVER THE CENTRAL AND NORTHERN PLAINS. AN E-W LINE OF TSRA HAS BEEN SLOWLY SAGGING SOUTH THROUGH SRN IA SINCE THURSDAY EVENING. THE CONVECTION APPEARS TO BE TIED TO LOW LEVEL MOISTURE CONVERGENCE AND ENTRANCE REGION OF H3 JET STREAK FROM NERN NE INTO SRN MN. TSRA/HVY RAIN TRENDS FOR TODAY WILL BE THE MAIN CONCERN BECAUSE OF THE SIGNIFICANT FLASH FLOOD THREAT OVER THE AREA . CURRENT THINKING IS THAT THE SRN 1/3 OF THE CWA WILL HAVE THE GREATEST THREAT OF ADDITIONAL HEAVY RAINS TODAY AS TSRA CONTINUE TO DEVELOP AND MOVE E OR NE ALONG AND AHEAD OF THE SURFACE FRONT SAGGING SOUTH THROUGH SERN IA. SURFACE WAVE OVER NERN KS IS PROGGED TO LIFT NE ALONG THE BOUNDARY THIS MORNING. THIS WILL ENHANCE THE TSRA/HVY RAIN OVER NRN MO...SRN IA AND CENTRAL IL THROUGH 18Z. THUS THE GREATEST RISK FOR SIGNIFICANT FLASH FLOODING. THIS AFTERNOON BECOMES A LITTLE MORE UNCERTAIN AS THE UPPER TROF MOVES OUT OF THE ROCKIES AND APPROACHES TO MID MS VALLEY BY THIS EVENING. THE CONVECTIVE FEEDBACK ON THE GFS WAS PRODUCING SIGNIFICANT QPF OVER THE NORTHEN CWA THIS AFTERNOON/EVENING WHILE THE NAM WAS KEEPING IT FURTHER SOUTH...TIED TO THE MAIN SURFACE FRONT. HOWEVER...WITH STRONG TSRA CURRENTLY ALONG THE IA/MO BORDER AND AN AREA OF STRONG TSRA MOVING EAST OUT OF NERN KS AHEAD OF THE SURFACE WAVE...THE BETTER SURFACE INSTABILITY AND CONVERGENCE MAY BE SHIFTED FURTHER SOUTH THIS AFTERNOON...FOCUSING TSRA DEVELOPMENT OVER MO RATHER THAN SRN IA. WITH THE UNCERTAINTY ABOUT THIS AFTERNOON AND EVENING HAVE ELECTED TO KEEP CURRENT FLASH FLOOD WATCH IN PLACE FOR THE ENTIRE CWA...ESPECIALLY SINCE MOST AREAS CAN NOT TAKE ANY ADDITIONAL HEAVY RAINS. THIS SHOULD GIVE THE NEXT SHIFT TIME TO ASSESS THE TRENDS AND MAKE THE NECESSARY ADJUSTMENTS TO THE AREA AND/OR TIMING OF THE WATCH. AFTER THE MID LEVEL TROF MOVES THROUGH TONIGHT...THE SURFACE FRONT WILL ACCELERATE SOUTHEAST BRINGING A MUCH NEEDED BREAK FROM THE RAIN BY SATURDAY. WE SHOULD BE IN FOR A STRETCH OF DRY WEATHER UNTIL MID WEEK WHEN MODELS SHOW ANOTHER FRONT MOVING INTO THE AREA. HIGH PRESSURE BUILDING INTO THE CWA WILL ALSO BRING IN MORE COMFORTABLE AIR AS DEWPOINTS DROP BACK INTO THE UPPER 50S TO MID 60S BY SUNDAY AND TEMPS SETTLE BACK INTO THE UPPER 70S TO LOW 80S. WARM AND HUMID CONIDITIONS WILL RETURN AGAIN EARLY NEXT WEEK AS SOUTHERLY FLOW SETS UP AHEAD OF THE NEXT FRONT. ..DLF... && .AVIATION... SEVERAL LARGE THUNDERSTORM COMPLEXES WILL CONTINUE TO MOVE ALONG A STATIONARY FRONT DRAPED ACROSS NORTHWEST MISSOURI THROUGH EASTERN IOWA INTO NORTHWEST ILLINOIS TODAY. THESE WILL RESULT IN IFR CIGS AND VISIBILITIES WITH INTENSE RAINFALL RATES...WITH BRL AND MLI TERMINALS IMPACTED THE MOST. OUTSIDE OF THUNDERSTORMS...POOLING LOW LEVEL MOISTURE WILL RESULT IN WIDESPREAD MVFR CIGS AND VISIBILITIES AND AREAS DIPPING INTO IFR CRITERIA THIS MORNING. THUNDERSTORMS WILL FINALLY EXIT THE AREA LATE TONIGHT INTO SATURDAY MORNING AS THE FRONT PUSHES SOUTHEAST. HOWEVER...LINGERING MOISTURE WILL SUPPORT AREAS OF IFR STRATUS AND FOG THROUGH MID MORNING. ..SHEETS.. && .HYDROLOGY... FLOODING IS OCCURRING OR WILL OCCUR SOON AT NUMEROUS FORECAST POINTS IN THE HSA. FORECASTS FOR PARTS OF THE CEDAR AND WAPSIPINICON RIVERS IN THE NORTHERN PART OF THE HSA WERE LOWERED DUE TO THE HEAVIER PCPN SETTING UP FURTHER SOUTH THURSDAY AND THURSDAY NIGHT. HOWEVER...FORECASTS FOR THE ROCK RIVER IN NORTHERN ILLINOIS HAVE BEEN BUMPED INTO THE MAJOR FLOOD CATEGORY...FOR COMO...JOSLIN AND MOLINE. HYDROLOGIC MODEL RUNS FROM THURSDAY AFTERNOON AND EVENING HAVE BEEN CONSISTENT IN RAISING THESE POINTS INTO THE MAJOR FLOOD CATEGORY. 24 HOUR RAINFALL ESTIMATES OF 1 TO 3 INCHES OVER THE LOWER PORTIONS OF THE ROCK RIVER...ENDING THURSDAY NIGHT...ALSO LEND CREDIBILITY TO THE HIGHER FORECAST. MINOR TO MODERATE FLOODING IS FORECAST TO OCCUR AT MOST LOCATIONS NEAR OR SOUTH OF INTERSTATE 80 IN SERN IA...ON THE WAPSIPINICON...CEDAR...IOWA...DES MOINES AND MISSISSIPPI RIVERS DURING THE NEXT SEVERAL DAYS. AT THIS POINT...THESE FORECASTS WERE BASED ON THE THE HEAVIER RAINS STAYING SOUTH OF INTERSTATE 80 THROUGH FRIDAY EVENING. CURRENT CONVECTIVE TRENDS ARE SUPPORTING THIS QPF FORECAST. ALTHOUGH SOME FORECAST MODELS ARE TRYING TO BRING THE HEAVIER RAIN FUTHER NORTH. IF THIS WERE TO OCCUR THEN THE ADDITIONAL RUNOFF COULD PUSH THE RIVERS IN SOUTH EAST AND EAST CENTRAL IOWA AND NORTHWEST ILLINOIS HIGHER THAN CURRENTLY FORECAST. ...DLF... && .DVN WATCHES/WARNINGS/ADVISORIES... IA...FLASH FLOOD WATCH THROUGH THIS EVENING. IL...FLASH FLOOD WATCH THROUGH THIS EVENING. MO...FLASH FLOOD WATCH THROUGH THIS EVENING. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE QUAD CITIES IA IL 525 AM CDT FRI AUG 24 2007 IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007- 009-015>018-024>026-034-035-MOZ009-010-251030- 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- 525 AM CDT FRI AUG 24 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 THREAT OF FLASH FLOODING OVER MUCH OF THE AREA TODAY. THE GROUND IS NEARLY SATURATED FROM THE HEAVY RAINS THAT HAVE FALLEN DURING THE LATE SEVERAL DAYS. THE ADDITIONAL RAIN THAT IS EXPECTED TODAY MAY RESULT IN FLASH FLOODS. THE GREATEST RISK OF FLASH FLOODING WILL BE SOUTHEAST OF A LINE FROM NEAR OTTUMWA THROUGH THE QUAD CITIES...WHERE PERIODS OF THUNDERSTORMS THROUGH THIS AFTERNOON COULD PRODUCE ANOTHER 1 TO 3 INCHES OF RAIN. THERE IS ALSO A THREAT OF SEVERE THUNDERSTORMS THIS AFTERNOON AND THIS EVENING...SOUTHEAST OF A LINE RUNNING THROUGH KEOSAUQUA...WAPELLO AND GENESEO. DAMAGING STRAIGHT LINE WINDS WILL BE THE GREATEST SEVERE THREAT. MANY RIVERS IN THE AREA ARE OUT OF THEIR BANKS OR ARE EXPECTED TO RISE OUT OF THEIR BANKS DURING THE NEXT SEVERAL DAYS. MINOR TO MODERATE FLOODING IS EXPECTED ON PARTS OF THE CEDAR...IOWA...WAPSIPINICON...ENGLISH...SKUNK AND DES MOINES RIVERS. MODERATE FLOODING IS EXPECTED ON PARTS OF THE PECATONICA RIVER...WITH MAJOR FLOODING FORECAST ON PARTS OF THE ROCK RIVER. THE MISSISSIPPI WILL EXPERIENCE MINOR TO MODERATE FLOODING FROM THE QUAD CITIES SOUTH THROUGH GREGORY LANDING. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THUNDERSTORMS ARE EXPECTED TO MOVE BACK OVER THE AREA TUESDAY AND WEDNESDAY. AT THIS TIME IT IS TO SOON TO DETERMINE IF THEY WILL POSE A SEVERE WEATHER THREAT. THE WIDESPREAD RIVER FLOODING WILL CONTINUE THROUGH THE MIDDLE OF NEXT WEEK. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND THIS EVENING IN SOUTHEAST IOWA...WEST CENTRAL ILLINOIS AND NORTHEAST MISSOURI. DLF
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
727 AM CDT FRI AUG 24 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0725 AM HEAVY RAIN CANTRIL 40.64N 92.07W
08/24/2007 M5.00 INCH VAN BUREN IA TRAINED SPOTTER
SINCE 9 PM ON 23 AUG.
&&
ELLIOTTPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
750 AM CDT FRI AUG 24 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0749 AM HEAVY RAIN 3 S STOCKPORT 40.81N 91.83W
08/24/2007 M4.70 INCH VAN BUREN IA TRAINED SPOTTER
12 HOUR TOTAL.
&&
ELLIOTTPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
759 AM CDT FRI AUG 24 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0759 AM HEAVY RAIN WEVER 40.72N 91.23W
08/24/2007 M4.00 INCH LEE IA TRAINED SPOTTER
TOTAL SINCE 4 PM ON 23 AUG.
&&
ELLIOTTPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
825 AM CDT FRI AUG 24 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM HEAVY RAIN REVERE 40.49N 91.68W
08/24/2007 M4.17 INCH CLARK MO CO-OP OBSERVER
BATTLE OF ATHENS STATE PARK. 24 HOUR TOTAL.
&&
ELLIOTTPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
832 AM CDT FRI AUG 24 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0832 AM HEAVY RAIN CANTRIL 40.64N 92.07W
08/24/2007 M6.10 INCH VAN BUREN IA TRAINED SPOTTER
&&
ELLIOTTPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
909 AM CDT FRI AUG 24 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0904 AM HEAVY RAIN ELDRIDGE 41.64N 90.57W
08/24/2007 M3.45 INCH SCOTT IA NWS EMPLOYEE
3.45 INCHES SINCE 12 AM THURSDAY. 4.67 INCHES SINCE 6 PM
WEDNESDAY. TOTAL 5.95 INCHES PAST 6 DAYS.
&&The Quad Cities radar (KDVN), 177 km away, was scanning. The volume nearest the first event began at 14:35 UTC.
2 flash flood. Local standard time, as filed.
Heavy rains caused flash flooding along the North Fabius River from Memphis, MO north to Brock, MO. Widespread agricultural flooding was reported near Memphis as well as some flooding in Memphis. Route C north of Memphis was closed due to high water.
Heavy rains caused flash flooding throughout Clark County. Flood waters covered many roads and low lying areas. In addition, many rivers rose quickly with some reaching or overflowing their banks.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2007Every state in 2007This day in weather historyWarnings in Missouri, 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: 57212, 57215.