1 flash 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 Lincoln, IL wrote its last area forecast discussion before the first event at Jul 22, 1:57 AM CST, 7 hours 33 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 257 AM CDT THU JUL 22 2004 .DISCUSSION...MAIN FORECAST PROBLEM IN THE SHORT TERM CONTINUES TO BE THE FRONTAL BOUNDARY...WHEN IT WILL RAIN AND HOW MUCH RAIN WILL FALL. SHORT TERM...TODAY THROUGH FRIDAY NIGHT... 00Z ETA AND GFS CONTINUE TO BE VERY SIMILAR IN HOW THEY HANDLE THE FRONTAL BOUNDARY. HOWEVER GFS HAS FEEDBACK ISSUES AND WILL GO CLOSER TO ETA/S QPF NUMBERS IN THE SHORT TERM. FOR TODAY...SOME LINGERING SHOWERS AND THUNDERSTORMS EARLY THIS MORNING DUE TO OLD OUTFLOWS FROM MCS THAT MOVED SOUTHEAST ACROSS THE EASTERN HALF OF ILLINOIS LAST NIGHT. SO WILL KEEP HIGHER POPS IN THE SOUTHERN SECTIONS OF THE CWA DURING THE MORNING HOURS. IN THE MEANTIME...FRONT TO SLOWLY SINK TO THE SOUTH OVER THE CWA AND WILL BE ALONG THE I-72 COORIDOR BY 00Z. THIS WILL BE THE MAIN FOCUSING MECHANISM FOR ACTIVITY FOR THE NEXT 36 HOURS...WITH MID 70S DEWPTS POOLING ALONG THE BOUNDARY AND PWS IN EXCESS OF TWO INCHES. ETA AND GFS CONTINUE TO FORECAST LI/S APPROACHING MINUS 6 AND ILLINOIS REMAINS IN THE RIGHT ENTRANCE REGION OF THE UPPER LEVEL JET MAX THROUGH FRIDAY MORNING. HOWEVER...SURFACE BASED CAPES HAVE FALLEN FROM PREVIOUS MODEL RUNS AND ARE ONLY BETWEEN 1500 AND 2000 J/KG TODAY. BUT WITH SO MUCH WARMING ALOFT AND HIGHER DEWPTS ADVECTING IN...MUCAPES WILL BE BETWEEN 2000 AND 3000 J/KG...WITH A MAX NEAR 4500 J/KG OVER NORTHERN PORTIONS OF THE CWA THIS AFTERNOON. SPC/S NEW DAY ONE OUTLOOK HAS MOST OF CWA IN A SLIGHT RISK FOR THIS AFTERNOON AND TONIGHT...MAINLY ALONG AND NORTH OF I-70. WILL GO WITH HIGHER POPS ALL LOCATIONS FOR THIS AFTERNOON AND TONIGHT AND WILL ADD MENTION OF HEAVY RAINFALL POSSIBLE. AS FOR HIGH TEMPS TODAY...WITH ALL OF THE DEBRIS CLOUDS AND ONGOING CONVECTION STILL FEEL THAT UPPER 80S THE BEST BET...JUST A COUPLE OF DEGREES COOLER THAN THE MAV NUMBERS. SHOWERS AND THUNDERSTORMS WILL BE ONGOING FOR TONIGHT WITH SEVERAL ROUNDS OF PRECIPITATION. FRONT WILL CONTINUE TO SINK TO THE SOUTH AND WILL BE SOUTH OF THE OHIO RIVER BY 12Z. FOR FRIDAY...EVEN THOUGH FRONT WILL BE TO THE SOUTH OF CWA...SOME OVERRUNNING PCPN NOT OUT OF THE QUESTION AS ADDITIONAL SHORTWAVES MOVE EAST ALONG THE BOUNDARY. BY EARLY FRIDAY EVENING...PRECIPITATION WILL COME TO AN END WITH COOLER AND DRIER CONDITIONS RETURNING TO THE REGION. LONG TERM...SATURDAY THROUGH WEDNESDAY... NO MAJOR CHANGES MADE TO THE EXTENDED FORECAST AS EXTENDED GFS AND ENSEMBLES CONTINUE TO KEEP CWA RAINFREE THROUGH THE PERIOD WITH COOL AND DRY WEATHER. && .ILX WATCHES/WARNINGS/ADVISORIES... IL...NONE. && BYRD
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 609 AM CDT THU JUL 22 2004 ILZ027>031-036>038-040>057-061>063-221600- CASS-CHAMPAIGN-CHRISTIAN-CLARK-COLES-CUMBERLAND-DE WITT-DOUGLAS- EDGAR-FULTON-KNOX-LOGAN-MACON-MARSHALL-MASON-MCLEAN-MENARD-MORGAN- MOULTRIE-PEORIA-PIATT-SANGAMON-SCHUYLER-SCOTT-SHELBY-STARK-TAZEWELL- VERMILION-WOODFORD- INCLUDING THE CITIES OF...BLOOMINGTON...CHAMPAIGN...DANVILLE... DECATUR...GALESBURG...HAVANA...JACKSONVILLE...LINCOLN...MATTOON... PEORIA...SHELBYVILLE...SPRINGFIELD AND TAYLORVILLE 609 AM CDT THU JUL 22 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL ILLINOIS. .DAY ONE...TODAY AND TONIGHT... A SURFACE FRONT WILL MOVE INTO THE AREA TODAY AND COMBINE WITH WARM MOIST AIR TO PRODUCE THUNDERSTORMS FOR THIS AFTERNOON AND TONIGHT. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BECOME SEVERE...WITH THE PRIMARY THREAT BEING LARGE HAIL AND DAMAGING WINDS. DUE TO THE HIGH MOISTURE CONTENT IN THE AIR...HEAVY RAINFALL IS ALSO POSSIBLE WITH THESE STORMS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... THE FRONT WILL STILL BE MOVING THROUGH CENTRAL ILLINOIS ON FRIDAY. THEREFORE...THUNDERSTORMS WILL CONTINUE TO BE POSSIBLE DURING THE DAY ON FRIDAY. THESE STORMS ARE NOT EXPECTED TO REACH SEVERE LIMITS AT THIS TIME. .SPOTTER ACTIVATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND TONIGHT. ILZ066>068-071>073-221600- CLAY-CRAWFORD-EFFINGHAM-JASPER-LAWRENCE-RICHLAND- INCLUDING THE CITIES OF...EFFINGHAM...FLORA AND LAWRENCEVILLE 609 AM CDT THU JUL 22 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST ILLINOIS. .DAY ONE...TODAY AND TONIGHT... A SURFACE FRONT WILL MOVE INTO THE AREA TODAY AND COMBINE WITH WARM MOIST AIR TO PRODUCE THUNDERSTORMS FOR THIS AFTERNOON AND TONIGHT. DUE TO THE HIGH MOISTURE CONTENT IN THE AIR...HEAVY RAINFALL IS POSSIBLE WITH THESE STORMS. NO OTHER SEVERE WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... THE FRONT WILL STILL BE MOVING THROUGH SOUTHEAST ILLINOIS ON FRIDAY. THEREFORE...THUNDERSTORMS WILL CONTINUE TO BE POSSIBLE DURING THE DAY ON FRIDAY. THESE STORMS ARE NOT EXPECTED TO REACH SEVERE LIMITS AT THIS TIME. .SPOTTER ACTIVATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED THROUGH TONIGHT. && 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. AUTEN
The Quad Cities radar (KDVN), 82 km away, was scanning. The volume nearest the first event began at 15:28 UTC.
1 flash flood. Local standard time, as filed.
An inch of rain fell in less than an hour in Galesburg. This caused widespread flooding in town. Several businesses sustained significant water damage.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2004Every state in 2004This day in weather historyWarnings in Illinois, July 2004
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: 5412428.