1 thunderstorm wind, as filed by the National Weather Service.
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 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 Lincoln, IL wrote its last area forecast discussion before the first event at Apr 21, 1:00 AM CST, 3 hours earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 200 AM CDT MON APR 21 2003 MAIN FORECAST CONCERNS WITH THIS ZONE PACKAGE ARE HIGH TEMPS TODAY AND TIMING OF CLEARING TREND TONIGHT. 06Z SURFACE ANALYSIS SHOWED LOW PRESSURE OVER LAKE SUPERIOR...WITH COLD FRONT TRAILING SOUTHWARD INTO OHIO VALLEY. TROUGH AXIS/WINDSHIFT LINE EXTENDED SOUTHWESTWARD FROM THE LOW THROUGH WISCONSIN AND IOWA. SURFACE OBS SHOWED A FEW RAIN AND SNOW SHOWERS TAKING PLACE ALONG AND JUST BEHIND THE TROUGH. LATEST SATELLITE IMAGERY INDICATED EXTENSIVE LOW CLOUD COVER ACROSS MUCH OF THE MIDWEST...WITH CLEARING LINE WELL TO THE NORTHWEST ACROSS THE DAKOTAS. FIRST CONCERN IS HIGH TEMPERATURES TODAY. PLENTY OF CLOUD COVER WILL PERSIST THROUGHOUT THE DAY...AS REGION REMAINS UNDER A CYCLONIC FLOW REGIME. VIGOROUS UPPER LOW WILL REMAIN ANCHORED OVER THE GREAT LAKES...SENDING PIECES OF ENERGY SOUTHWARD INTO ILLINOIS. A FEW LIGHT RAIN SHOWERS WILL BE POSSIBLE...ESPECIALLY ACROSS THE NORTHERN AND EASTERN ZONES. SINCE MET GUIDANCE HAS BEEN RUNNING A LITTLE TOO HIGH LATELY...WILL LEAN MORE TOWARD THE COOLER MAV/FWC NUMBERS FOR HIGHS TODAY. WILL GO LOWER 50S NORTHWEST...MIDDLE 50S CENTRAL...AND UPPER 50S SOUTHEAST. NEXT CONCERN IS TIMING OF THE CLEARING TREND TONIGHT. 00Z MESOETA FORECAST SOUNDINGS SHOW SLOW CLEARING TAKING PLACE FROM W TO E TONIGHT. USING THE 1000-850MB RH VALUES AS A GENERAL GUIDE...IT WOULD APPEAR SKIES WOULD CLEAR ACROSS THE NW AROUND MIDNIGHT...WITH CLOUDS PERSISTING THROUGHOUT THE NIGHT ACROSS THE E. TIMING OF CLEARING WILL HAVE A BIG IMPACT ON LOW TEMPERATURES. WILL GO WITH THE SLIGHTLY COOLER MAV/FWC NUMBERS FOR THE NW...BUT WILL GO ABOVE GUIDANCE IN THE EAST. SKIES CLEAR EVERYWHERE ON TUESDAY...AS RIDGE OF HIGH PRESSURE BUILDS IN FROM THE WEST. AFTER THAT...NEXT SYSTEM APPROACHES REGION BY THURSDAY. SYSTEM IS ALREADY EVIDENT ON WATER VAPOR IMAGERY...SPINNING JUST OFF THE PACIFIC NW COAST. MODELS DROP THIS SYSTEM SOUTHWARD INTO CALIFORNIA...FORMING A CUT-OFF LOW BY 00Z TUE. LOW THEN SLOWLY PROGRESSES EASTWARD...SPREADING CLOUDS AND RAIN INTO REGION DURING DAY THURSDAY. GFS HAS BEEN TRENDING SLIGHTLY FURTHER SOUTH WITH THE LOW TRACK OVER THE PAST COUPLE OF RUNS...NOW KEEPING SYSTEM JUST SOUTH OF ILLINOIS. AS A RESULT...COOL AND SHOWERY WEATHER WILL BE ON TAP FOR THE END OF THE WEEK...BEFORE THINGS CLEAR OUT FOR THE WEEKEND. .ILX...NONE. BARNES
ILZ027>031-036>038-040>057-061>063-066>068-071>073-211100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 1046 AM CDT SUN APR 20 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND SOUTHEAST ILLINOIS. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON OVER PORTIONS OF EAST CENTRAL AND SOUTHEAST ILLINOIS. THE MAIN THREAT AREA WILL BE ALONG AND EAST OF INTERSTATE 57. DAMAGING WINDS AND LARGE HAIL WILL BE THE PRIMARY THREATS. THE THUNDERSTORM ACTIVITY IS EXPECTED TO DEVELOP ALONG A COLD FRONT MOVING THROUGH ILLINOIS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON BETWEEN THE HOURS OF NOON AND 6 PM. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC AND CLIMATE INFORMATION...IS AVAILABLE ON THE WEB AT: HTTP://WWW.CRH.NOAA.GOV/ILX (ALL IN LOWER CASE) 13
The Indianapolis radar (KIND), 140 km away, was scanning. The volume nearest the first event began at 10:00 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds uprooted several large trees, destroyed an above ground pool and destroyed several sheds.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2003Every state in 2003This day in weather historyWarnings in Illinois, April 2003
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: 5350816.