3 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 3 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 Jun 11, 1:44 AM CST, 11 hours 17 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE QUAD CITIES IA IL 244 AM CDT TUE JUN 11 2002 CHALLENGING FORECAST THIS MORNING WITH SURFACE FRONT MOVING TOWARDS THE FORECAST AREA...ACCOMPANIED BY A COMPLEX OF STRONG/SEVERE SHOWERS AND THUNDERSTORMS. UPPER LEVEL SUPPORT FOR THIS SYSTEM IS GOOD...WITH 850MB LLJ ACROSS KS/MO...AND WITH HIGH 850MB DEWPOINTS AND TEMPS. UPPER LEVELS ALSO HAVE A SERIES OF 500MB SHORT WAVES TO MOVE ACROSS IA...AND SIGNIFICANT DIFFLUENCE OVER THE UPPER MIDWEST. ENTIRE FORECAST WILL BE A CHALLENGE THIS MORNING...WITH CHANCES OF PRECIP INTO THURSDAY TO BE LOOKED AT. LITTLE QUESTION ABOUT SOME PERIODS...BUT WEDNESDAY/THURSDAY TIME FRAME TEMPS AND POPS COULD BE TRICKY DUE TO QUESTIONS ABOUT POSITIONING OF SURFACE FRONT. 00Z MODELS APPEAR TO HAVE INITIALIZED FAIRLY WELL...THOUGH SOME SIGNIFICANT PROBLEMS IN THE ETA WITH QPF...WITH THE AVN HANDLING CURRENT CONVECTION BETTER...ONLY BEING A LITTLE ON THE HIGH SIDE. NGM HAVING SOME PROBLEMS WITH MAIN FEATURES AND WILL DISCARD FOR NOW. PREFER POSITIONING OF THE SURFACE FRONT IN THE ETA...WITH THE AVN AT 06Z TOO FAR SOUTHEAST. SO...HAVE GONE WITH A BLEND OF THE MODELS FOR THIS FORECAST. TODAY...SHOWERS AND THUNDERSTORMS SHOULD CONTINUE TO REGENERATE AS THE SURFACE FRONT DROPS SOUTHEAST TOWARDS THE CWA. TIMING WILL BE TRICKY WITH THIS MORNINGS CONVECTION AFFECTING THE MORNING HOURS...AND THEN WITH AFTERNOON CONVECTION FIRING AGAIN. AFTERNOON HOURS WILL BE DEPENDENT ON WHERE THE STORMS RE-FIRE...WHICH AT THIS TIME APPEARS TO BE OVER WESTERN IOWA. FOR NOW...AM GOING TO GO WITH LOW CATEGORICAL 80 POPS FOR ENTIRE CWA FOR TODAY. WILL ALSO BE INCLUDING FEW MAY BE SEVERE WORDING AS WE ARE IN SLIGHT RISK IN SPC OUTLOOK...AND DUE TO INSTABILITY AND VICINITY OF FRONT THINK THIS IS REASONABLE. AS FAR AS TEMPS...INCREASED CLOUD COVER WILL BE OFF SET BY COMPRESSIONAL HEATING AHEAD OF FRONT. MAY TONE DOWN CURRENT FCST A LITTLE...BUT NOT AS LOW AS IN CURRENT GUIDANCE. TONIGHT...AM PRETTY CONFIDENT IN CONTINUING SHOWERS AND THUNDERSTORMS TONIGHT...BUT NOT AS CONFIDENT THAT COVERAGE WILL BE AS GREAT...SO WILL LEAVE LIKELY POPS MUCH AS ARE IN CURRENT PACKAGE. TEMPS TO BE A LITTLE BIT OF A RACE TO SEE HOW FAR SOUTHEAST THE FRONT CAN GET BEFORE MORNING. WILL GO ON COOL SIDE IN THE NORTHWEST CWA...BUT SLOW PROGRESSION OF FRONT WILL KEEP SOUTHEAST CWA FAIRLY CLOSE TO LOW TEMPS THIS MORNING. WEDNESDAY...WITH FRONT STILL LINGERING JUST SOUTH OF CWA...AM GOING TO INCLUDE A CHANCE OF TSRA IN THE SOUTHERN HALF OF CWA...WITH ONLY SLIGHT CHANCES NORTH. BY WEDNESDAY NIGHT THE FRONT SHOULD DROP FAR ENOUGH SOUTH FOR ONLY SLIGHT CHANCES IN FAR SOUTH. TEMPS WILL BE VERY COOL... AND WILL BE GOING COOLER THAN GUIDANCE. THURSDAY...IN THE NORTHWEST FLOW...WITH A SIGNIFICANT COLD POOL ALOFT OVER CWA...WE TYPICALLY GET SHOWERS IN THE AFTERNOON...SO HAVE THROWN THESE IN WITH LOW POPS. KEPT THEM TO MAINLY AFTERNOON WORDING... THOUGH WOULD NOT BE SURPRISED TO TO SEE THEM SHOW UP IN THE MORNING TOO. TEMPS REMAIN COOL...GOING TEMPS AND GUIDANCE FAIRLY CLOSE SO WILL ONLY TWEAK A LITTLE. NO CHANGES TO EXTENDED THU-MON PLANNED ATTM. .DVN... IA...NONE. IL...NONE. MO...NONE. LRE
The national radar mosaic for the moment the first event began.
3 flash flood. Local standard time, as filed.
Two inches of rain fell in just under 2 hours, resulting in flash flooding. Water covered several city streets and was up to the fenders on some automobiles.
Several rural roads throughout the county were covered with water up to a foot deep and were impassable.
Many roads throughout the county were covered with water. Also, several creeks and streams were forced out of their banks.
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, June 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: 5301624, 5301625, 5301722.