2 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 Aug 11, 12:35 PM CST, 2 hours 35 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 135 PM CDT MON AUG 11 2003 SHORT TERM CONCERNS FOCUS ON PCPN CHANCES. IN THE EXTENDED...HIGH TEMPS UNDER THE RIDGE ALOFT AND TIMING OF THE NEXT FRONT/PCPN CHANCES OVER THE WEEKEND STILL APPEARS TO BE PROBLEMATIC. MIDDAY SFC CHART SHOWING WEAK AND SOMEWHAT DIFFUSE FRONT/TROFF LOCATED ACROSS CENTRAL IL. COOLER TEMPS (READINGS IN THE 60S) HOWEVER LAG BEHIND AND MAINLY OVER WI. SAT PICS SHOWING UPPER LOW OVER KY/OH WITH THINGS WRAPPING UP TO THE NW OVER THE OHIO VALLEY AND THEN TO THE SW OVER WI/IL. NEW CONVECTION BREAKING OUT OVER N IL...SCT SHRAS CONTINUE OVER THE NORTHERN AND NW PORTIONS OF THE CWA...ALSO MOVING TO THE SW. SENSIBLE WEATHER...SOME CONCERNS ON HOW TO HANDLE POPS TONIGHT AS IN JUST EVENING WORDING VERSUS NO TIMING AND HOW HARD TO HIT THE POPS AS WELL. THINK THE BULK OF THE PCPN WILL BE DURING THE EVENING HOURS BUT HAVE SOME CONCERNS ABOUT SOME SCATTERED...EARLY AM SHOWERS AS WELL. SKY COVER ALSO A PROBLEM TONIGHT AND TOMORROW (PARTLY VERSUS MOSTLY CLOUDY) AND WILL MAKE FINAL DECISION CLOSER TO PRESS TIME. KEPT CHC POPS IN FOR TOMORROW AFTERNOON AND EVENING AS UPPER LOW STILL OVER THE OHIO VALLEY AND VORTS ROTATING AROUND IN THE FLOW SHOULD BE ENUFF TO SPARK SOME CONVECTION. MAX TEMPS TOMORROW COULD BE A LITTLE TRICKY WITH SKY COVER/PCPN AROUND. BASICALLY FOR THE SAME REASONS...DECIDED TO GO AHEAD AND ADD SOME AFTERNOON POPS ON WED...MAINLY CENTRAL-SE ZONES. LEFT POPS OUT FOR WED EVENING BUT MAY HAVE TO ADD LATER. UPPER TROFF ON WED STILL OVER THE AREA WITH SOME VORT AND WEAK SFC TROFF ACROSS S IN/IL ALSO. AT THIS TIME THE GFS SEEMS OVERDONE WITH QPF ON THU CONSIDERING THE AREA UNDER A 598 5H HIGH. AS THE UPPER LOW PULLS OUT TO THE NE AND SW...THINKING THAT MOST OF THE PCPN SHOULD BE SOUTH OF OUR AREA ON THU...THEREFORE LEFT POPS OUT FOR NOW BUT MAY HAVE TO ADD LOW CHC POPS AT A LATER DATE IF THINGS PLAY OUT SLOWER. MED RANGE MODELS BEGIN TO DIVERGE QUITE A BIT ON FRIDAY AND THRU THE WEEKEND. GFS STILL FASTER THAN ECMWF AND SOME OF THE OTHER MODELS WITH FRONT ON SUN/MON. PREV SHIFT REMOVED POPS SAT AND THIS LOOKS GOOD. ON SUNDAY...GFS HAS THE AREA UNDER A W-NW FLOW WHILE THE ECMWF LOOKS COMPLETELY DIFFERENT WITH THE SYNOPTIC SCALE FEATURES. CONFIDENCE LOW THROUGH THIS PERIOD AND FEEL THAT A BLEND IS PROBABLY BEST. I LEFT POPS IN ON SUNDAY FOR NOW AND KEPT MONDAY DRY...ALTHOUGH WOULDNT BE SURPRISED IF LATER SHIFTS MAY HAVE TO REMOVE SUN POPS AND PUSH THEM INTO THE MONDAY PERIOD. MET MOS NUMBERS COOLER TOMORROW AND ESP ON WED THAN THE NGM/AVN NUMBERS. WILL GO WITH A BLEND. ISC GRIDS ALL SENT AND LOOK CLOSE. NOT SURPRISING...WE HAVE SOME DIFFERENCES IN THE POP FIELDS...BUT NOTHING TOO SERIOUS. FURTHER COORDINATION WELCOME. .ILX...NONE. HALL
ILZ027>031-036>038-040>057-061>063-066>068-071>073-121100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 1045 AM CDT MON AUG 11 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND SOUTHEAST ILLINOIS. .DAY ONE...TODAY AND TONIGHT A DISTURBANCE WILL MOVE ACROSS ILLINOIS AND ALLOW SCATTERED THUNDERSTORMS TO CONTINUE INTO THE EVENING HOURS ACROSS CENTRAL AND SOUTHEAST ILLINOIS. AN ISOLATED STRONG THUNDERSTORM IS POSSIBLE WITH HAIL AND GUSTY WINDS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY ANOTHER DISTURBANCE WILL MOVE THROUGH ILLINOIS ON TUESDAY...BRINGING A CHANCE OF THUNDERSTORMS TO CENTRAL AND SOUTHEAST ILLINOIS. ANOTHER SYSTEM WILL ARRIVE LATE IN THE WEEKEND...BRINGING A CHANCE OF THUNDERSTORMS TO ILLINOIS ON SUNDAY. AT THIS TIME...WIDESPREAD SEVERE STORMS ARE NOT EXPECTED EITHER DAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC AND CLIMATE INFORMATION...IS AVAILABLE ON THE WEB AT: HTTP://WWW.CRH.NOAA.GOV/ILX. THIS ADDRESS IS ALL IN LOWER CASE. 13
The Quad Cities radar (KDVN), 76 km away, was scanning. The volume nearest the first event began at 21:12 UTC.
2 thunderstorm wind. Local standard time, as filed.
Numerous trees, tree limbs, power lines and power poles were blown down around town. Several of the fallen trees and power lines blocked streets temporarily. No injuries were reported.
Several large trees, power lines and tree limbs were blown down. One tree fell onto a house causing extensive damage to the porch. No injuries were reported.
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, August 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: 5377527, 5377528.