Storms developed along a strong cold front. Some of the storms became severe producing large hail, isolated wind damage and flash flooding.
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 LSX wrote it up.
Storms developed along a strong cold front. Some of the storms became severe producing large hail, isolated wind damage and flash flooding.
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 St. Louis, MO wrote its last area forecast discussion before the first event at Apr 7, 11:47 AM CST, 1 hour 38 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE ST LOUIS MO 1247 PM CDT WED APR 7 2010 .UPDATE... /1226 PM CDT WED APR 7 2010/ LINE OF TSRA IS DEVELOPING IN THE MOISTURE CONVERGENCE ALONG THE COLD FRONT ROUGHLY ALONG A LINE FROM SPI-STL-UNO. SBCAPES HAVE INCREASED AOA 1000 J/KG AHEAD OF THE LINE...SO EXPECT LINE TO FILL INTO AND CORES TO BECOME INTENSE EARLY THIS AFTERNOON. DEEP LAYER SHEAR IS 60KTS WHICH CERTAINLY MEANS THAT A FEW SVR STORMS CONTINUE TO BE POSSIBLE UNTIL THE FRONT EXITS THE CWA AROUND 21Z. BRITT && .DISCUSSION... /416 AM CDT WED APR 7 2010/ -SHRA/TSRA WAS ONGOING ACROSS THE CWA THIS MORNING AHEAD OF AN APPROACHING CDFNT AND ALONG AN OUTFLOW BDRY FM AN EARLIER BATCH OF CONVECTION. FROPA WILL BE AROUND 6-12 HRS LATER THAN PREVIOUSLY THOUGHT AND THIS TIMING DIFFERENCE WILL AFFECT THE AREA IN TWO IMPORTANT WAYS. FIRST...THE DAILY HIGH TEMPERATURE WILL LIKELY OCCUR IN THE MORNING OR EARLY AFTERNOON IN MANY LOCATIONS BECAUSE TEMPERATURES WILL START FALLING AFTER FROPA. SECOND...THE SLOWER TIMING MEANS THAT THE FRONT WILL BE DRAPED ACROSS THE CWA DURING PEAK HEATING AND WILL SERVE AS A FOCUS FOR REDEVELOPING -SHRA/TSRA IN THE AFTN AND EARLY EVENING ACROSS THE SOUTHEASTERN HALF OF THE CWA. THERE MAY BE ANOTHER BATCH OF SHOWERS OVERNIGHT ASSOCIATED WITH PASSAGE OF THE UPPER LVL LOW BUT INCREASING ISENTROPIC DOWNGLIDE WILL DISSIPATE ANY LINGERING SHOWERS BY TOMORROW MORNING. COMPARED TO RECENT HIGHS IN THE 80S...IT WILL FEEL MUCH COLDER OVER THE NEXT FEW DAYS AND NIGHTS. TEMPERATURES WILL BEGIN WARMING ON FRI WITH INCREASING H85 TEMPERATURES AND WINDS TURNING SWLY AROUND THE BACK SIDE OF A SFC HIGH. NO CHANGES PAST 12Z SUN. KANOFSKY && .AVIATION... /1226 PM CDT WED APR 7 2010/ LINE OF TSRA DEVELOPING OVER ERN MO WILL MOVE EAST OF KSTL/KSUS BY 19Z. BAND OF MVFR CLOUDS WILL MOVE ACROSS THE AREA BEHIND THE FRONT WILL AFFECT KCOU/KSUS/KSTL EARLY THIS AFTN BEFORE MOVING EASTWARD. LOWER CIGS IN THE 600-1200FT RANGE OVER NRN MM/SRN IL WILL AFFECT KUIN THE REST OF THE AFTERNOON INTO TONIGHT. THIS SAME AREA OF LOW CIGS WILL WORK SWD INTO CNTRL AND E CNTRL MO THIS EVENING. WLY WINDS WILL BECOME NLY AT KUIN THIS AFTN...BUT REMAINDER OF TAF SITES SHOULD REMAIN WLY. CIGS WILL BEGIN TO IMPROVE ON THURSDAY MORNING. SPECIFICS FOR KSTL...LINE OF TSRA WILL MOVE ACROSS KSTL EARLY IN THE PERIOD AHEAD OF A COLD FRONT THAT WILL MOVE ACROSS THE AREA AROUND 19Z. THEREAFTER...CIGS IN THE 1500-2500FT RANGE WILL MOVE ACROSS THE AREA BEFORE SKIES SCT OUT BY MID AFTERNOON. CIGS WILL LOWER AGAIN TONIGHT AS AREA OF CLOUDS OVER NRN MO/SRN IA MOVES SLOWLY SWD INTO THE AREA. CIGS WILL IMPROVE ON THURSDAY MORNING BRITT && .LSX WATCHES/WARNINGS/ADVISORIES... MO...NONE. IL...NONE. && WFO LSX
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 144 PM CDT WED APR 7 2010 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-081200- GREENE IL-MACOUPIN IL-MONTGOMERY IL-BOND IL-FAYETTE IL-CLINTON IL- MARION IL-WASHINGTON IL-RANDOLPH IL-ADAMS IL-BROWN IL-PIKE IL- CALHOUN IL-JERSEY IL-MADISON IL-ST. CLAIR IL-MONROE IL-KNOX MO- LEWIS MO-SHELBY MO-MARION MO-MONROE MO-RALLS MO-PIKE MO-BOONE MO- AUDRAIN MO-MONITEAU MO-COLE MO-OSAGE MO-CALLAWAY MO-MONTGOMERY MO- LINCOLN MO-GASCONADE MO-WARREN MO-ST. CHARLES MO-FRANKLIN MO- ST. LOUIS MO-ST. LOUIS CITY MO-JEFFERSON MO-CRAWFORD MO- WASHINGTON MO-ST. FRANCOIS MO-STE. GENEVIEVE MO-IRON MO- MADISON MO-REYNOLDS MO- 144 PM CDT WED APR 7 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN AND CENTRAL MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. .DAY ONE...THIS AFTERNOON AND TONIGHT A LINE OF THUNDERSTORMS WILL MOVE EAST ACROSS PARTS OF SOUTHWEST AND SOUTH CENTRAL ILLINOIS AS WELL SOUTHEAST MISSOURI THE REST OF THE AFTERNOON. SOME OF THESE STORMS MAY PRODUCE LARGE HAIL... DAMAGING WINDS IN EXCESS OF 60 MPH AND ISOLATED TORNADOES. MODERATE FLOODING IS OCCURRING ALONG PARTS OF THE MISSISSIPPI RIVER. PLEASE SEE THE APPROPRIATE FLOOD STATEMENTS FOR DETAILS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY MODERATE FLOODING WILL CONTINUE ALONG PARTS OF THE MISSISSIPPI RIVER. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS LIKELY THIS AFTERNOON OVER PARTS OF ILLINOIS AND SOUTHEAST MISSOURI. && FOR A GRAPHICAL VERSION OF THIS INFORMATION SEE OUR WEBPAGE AT (LOWERCASE)... HTTP://WWW.WEATHER.GOV/LSX/?N=HWO1 BRITT
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 143 PM CDT WED APR 7 2010 ILZ060-064-100-071915- BOND IL-MADISON IL-MONTGOMERY IL- 143 PM CDT WED APR 7 2010 ...SIGNIFICANT WEATHER ADVISORY FOR BOND...MADISON AND SOUTHERN MONTGOMERY COUNTIES UNTIL 215 PM CDT... AT 139 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR EDWARDSVILLE...MOVING NORTHEAST AT 45 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... HIGHLAND... GREENVILLE... ST. JACOB... CARPENTER... WORDEN... ALHAMBRA... LIVINGSTON... POCAHONTAS... COFFEEN... WOBURN... MULBERRY GROVE... HAMEL... KAUFMAN... GRANTFORK... WILLIAMSON... THIS STORM MAY INTENSIFY....AND A TORNADO WATCH IS IN EFFECT FOR THIS AREA UNTIL 700 PM. BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS....FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. TILLY
The St Louis radar (KLSX), 113 km away, was scanning. The volume nearest the first event began at 19:25 UTC.
2 flash flood, 1 thunderstorm wind, 1 hail. Local standard time, as filed.
Thunderstorm winds blew down a power pole and a couple of large trees on the southeast side of Greenville. One tree fell onto an unoccupied car, causing extensive damage.
Between 2 and 5 inches of rain fell in a two hour period on already saturated soils causing flash flooding. Numerous roads were flooded including Illinois Route 37 near Kinmundy. Several cars were swept downstream in a couple of spots in the northern half of the county, but the occupants were rescued with no injuries reported. Also, several basements in Kinmundy and Sandoval were flooded.
Between 3 and 5 inches of rain fell in a two hour period onto already saturated soils causing flash flooding. Numerous roads were flooded over far southeastern Fayette County, including two feet of water over Illinois Route 37 in Farina.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2010Every state in 2010This day in weather historyWarnings in Illinois, April 2010
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: 224874, 224875, 224876, 224877.