1 flood, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 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 May 11, 1:30 PM CST, 1 hour 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE QUAD CITIES IA IL 230 PM CDT SAT MAY 11 2002 WIDESPREAD 1 TO 2 INCH RAINS OVER CENTRAL AND SOUTHERN CWA SETTING STAGE FOR POSSIBILITY OF MORE FLOODING TONIGHT AND EARLY THURSDAY. LOOKS LIKE HYDRO SITUATION WILL BE MAIN CONCERN THIS ISSUANCE ALONG WITH SEVERE POTENTIAL OVERNIGHT ACROSS SOUTH. SOUTHERN CWA CURRENTLY UNDER FLOOD WATCH THROUGH TONIGHT WHERE MODELS STILL SUGGEST BEST POTENTIAL FOR ADDITIONAL HEAVY RAIN WILL BE OVERNIGHT. ALSO LOOKS LIKE MODERATE TO HEAVY RAIN POTENTIAL WILL CONTINUE INTO SUNDAY MORNING AND WILL EXTEND WATCH ACCORDINGLY. BIG DILEMA IS WHETHER TO BRING WATCH FURTHER NW WITH GROUND NOW SATURATED FROM THIS MORNINGS RAIN. FEELING IS THAT MODELS ARE ALREADY TOO FAR N WITH WARM FRONT AT 18Z...WITH CLOUDS AND RAIN-COOLED AIR NORTH OF BOUNDARY ENHANCING FRONT...MODEL POSITION ACROSS SE IA AND W CENTRAL IL IS QUESTIONABLE. WILL MONITOR FRONT AND IF THERE ISNT MUCH NORTHWARD PUSH...WILL KEEP LOCATION OF WATCH INTACT. SOME RISK OF SEVERE LATE THIS AFTERNOON AND THIS EVENING AHEAD OF SFC LOW PROGGED TO MOVE ALONG BOUNDARY ACROSS NRN MO/SRN IA THIS EVENING AND OVERNIGHT. POTENTIAL LATE TODAY WILL BE DEPENDENT ON AMOUNT OF DESTABALIZATION OVER CENTRAL MO WHERE CLOUDS ARE CURRENTLY LIMITING AFTERNOON HEATING AND WARM FRONTAL POSITION. AT THIS POINT BELIEVE SEVERE POTENTIAL IS MINIMAL AND WILL BE LIMITED TO FAR SOUTH. MODELS SIMILAR THROUGH TUESDAY PUSHING FRONT SOUTH OF AREA BY LATE SUNDAY NIGHT AS NORTHWEST FLOW DEVELOPS OVER REGION. ANOTHER WEAK S/W DROPS SOUTH THROUGH MID MISSISSIPPI VALLEY MONDAY NIGHT. FORCING AND MOISTURE LIMITED...SO NOTHING MORE THAN CLOUDS EXPECTED. WILL FAVOR COOLER MAV NUMBERS WITH COOL NW FLOW THROUGH PERIOD. .EXTENDED LONG RANGE MODELS IN CLOSER AGREEMENT FOR LATE WEEK WITH ACTIVE PATTERN CONTINUING. MODELS POINTING TO ANOTHER SIGNIFIANT RAINFALL EVENT FOR REGION THURSDAY/FRIDAY WITH ANOTHER FRONT STALLING OVER SOUTHERN CWA AND SFC LOW MOVING ALONG BOUNDARY. AVN POINTING TO SOME PCPN WEDNESDAY...BUT LOOKS WAY OVER DONE. SO...WILL GO CHANCE TSRA WED THRU SATURDAY. .DVN...FLOOD WATCH TONIGHT IA...IAZ078-087>089-098-099. IL...ILZ016>018-024>026-034-035. MO...MOZ009-010. DLF
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
307 PM CDT SAT MAY 11 2002
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0258 PM LOMAX IL .5 INCH HAIL
05/11/02 HENDERSON REPORTED BY STORM
SPOTTER.PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
320 PM CDT SAT MAY 11 2002
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0305 PM 2 S STRONGHURST IL .75 INCH HAIL
05/11/02 HENDERSONPRELIMINARY LOCAL STORM REPORT...CORRECTION
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
322 PM CDT SAT MAY 11 2002 COR
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0305 PM 2 S STRONGHURST IL .75 INCH HAIL
05/11/02 HENDERSON REPORTED BY STORM
SPOTTERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
326 PM CDT SAT MAY 11 2002
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0324 PM LA HARPE IL .5 INCH HAIL
05/11/02 HANCOCK REPORTED BY STORM
SPOTTER.PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
414 PM CDT SAT MAY 11 2002
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0340 PM GREENBUSH IL .75 INCH HAIL
05/11/02 WARREN REPORTED BY LAW
ENFORCEMENT OFFICIAL.The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Heavy rains resulted in major flooding along the La Moine River at Colmar. The river crested some 7 feet above flood stage at 25.69 feet, tying the record for the 3rd highest crest.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2002Every state in 2002This day in weather historyWarnings in Illinois, May 2002
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: 5297861.