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 St. Louis, MO wrote its last area forecast discussion before the first event at Jun 12, 3:40 AM CST, 2 hours 25 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 440 AM CDT SAT JUN 12 2004 COMPLEX FCST FOR THIS MRNG AND THROUGHOUT THE FCST. THE CONVECTIVE EVOLUTION OVER THE NEXT 2 OR 3 DAYS IS HARDLY CLEAR AND IS COMPLICATED BY FEEDBACK ISSUES WITH THE NWP MODELS. IN THE SHORT TERM...THE MODELS ARE PRETTY CLUE-LESS WITH REGARDS TO THE MCS OVR WRN MO/SE KS ATTM. A 25-30 KT SWLY LLJ IS FEEDING SOME VERY UNSTABLE AIR INTO THIS ACTIVITY ALG THE SW FLANK WHERE THE STGST CONVECTION RESIDES. BUT FOR THAT MATTER...UNSTABLE AIR WITH MUCAPES OF 1500-2500 J/KG AND SIS OF -4 TO -6 COVERS MOST OF THE CWFA. OUTFLOW FM THE EARLIER CONVECTION OVER NW MO HAS ALREADY PUSHED WELL SE OF MID MO...AND IT APPEARS THAT THIS COMPLEX SHUD GRADUALLY WKN THIS MRNG AND MOVE SEWD ALG THE BNDRY. ELSEWHERE SCT TSRA HAVE DVLPD WITHIN AFOREMENTIONED LLJ AXIS FM STL AREA SOUTHWARD. BOOSTED POPS INTO THE LIKELY CAT THIS MRNG OVER CNTRL MO WITH SCT COVERAGE ELSEWHERE. THINK MOST OF THIS PCPN WILL DIMINISH/DSIPT BY 15-16Z...WITH CHC OF REDEVELOPMENT THIS AFTERNOON AS THE AIRMASS HEATS UP AND GETS VERY UNSTBL...BOTH PULSE-TYPE STRMS AND MAYBE MORE ORGANIZED STRMS ALG ANY RESIDUAL BNDRYS. THE ONGOING PCPN CREATES HEADACHES FOR TEMPS TDA. IF THE CLOUDS THIN AS EXPECTED LATER THIS MRNG...THEN THE FCST TEMPS SHUD BE REALIZED...HOWEVER IF DEBRIS CLOUDS HANG ON LONGER THEN I MAY BE A BIT WARM. ANTICIPATING ANOTHER FWD PROPAGATING MCS TO DEVELOP SOMEWHERE FROM CNTRL KS NWD INTO SRN NEB THIS AFTERNOON. INITIALLY THIS SHUD BE SCT STORMS THEN DEVELOP INTO A LINEAR SYSTEM AND MOVE EWD TNGT ACRS THE REGION IN CONCERT WITH THE MIGRATING SHRTWV AND VEERING LLJ. SUNDAY DAYTIME IS A TOSS-UP. VERY WARM AND UNSTABLE AIR...PSBL RESIDUAL BNDRYS FM THE MCS...DSIPTING DEBRIS CLOUDS. I KEPT POPS IN THE CHANCE RANGE AND KEPT TEMPS PRETTY WARM. MDL CONSENSUS IS THAT A BNDRY SHUD LIE INVOF OF SRN IA/XTRM NRN MO BY EARLY SUN EVNG. VERY WARM AND UNSTABLE AIR WILL RESIDE SOUTH OF THE FNT. EXPECT TSRA TO DEVELOP IN ITS VCNTY LATE AFTERNOON INTO EARLY EVENING AND ORGANIZE INTO ONE OR MORE MCS. THESE SHOULD MOVE E/SEWD AND AFFECT AREAS ALG AND NORTH OF THE I-70 COORIDOOR. FROM MONDAY AND BYD THE FCST HAS SIDE WITH THE ETA MODEL KEEPING THE SYNOPTIC SCALE CDFNT NORTH OF THE AREA. THE GFS IS SUFFERING FM A GREAT DEAL OF FEEDBACK...AND THUS THE SFC PRES SYSTEMS AND BNDRY PSN LOOK UNREALISTIC. IT HAS BEEN SHOWING THIS SAME TENDENCY FOR THE LAST WEEK OR SO...PREDICTING FROPAS IN ERROR SVRLS TIMES. IT IS UNCLEAR WHEN THE REAL CDFNT WILL FINALLY MAKE IT INTO THE MID MS VLY. THERE IS GROWING CONSENSUS THAT IT MAY BE MID-LATE WEEK. && .LSX WATCHES/WARNINGS/ADVISORIES... .MO...NONE .IL...NONE GLASS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 632 AM CDT SAT JUN 12 2004 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-131100- ADAMS IL-AUDRAIN-BOND IL-BOONE-BROWN-CALHOUN IL-CALLAWAY-CLINTON IL- COLE-CRAWFORD-FAYETTE IL-FRANKLIN-GASCONADE-GREENE IL-IRON-JEFFERSON- JERSEY IL-KNOX-LEWIS-LINCOLN-MACOUPIN IL-MADISON-MADISON IL-MARION- MARION IL-MONITEAU-MONROE-MONROE IL-MONTGOMERY-MONTGOMERY IL-OSAGE- PIKE-PIKE IL-RALLS-RANDOLPH IL-REYNOLDS-SHELBY-ST CHARLES- ST CLAIR IL-ST FRANCOIS-ST LOUIS-ST LOUIS CITY-STE GENEVIEVE-WARREN- WASHINGTON-WASHINGTON IL- 632 AM CDT SAT JUN 12 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND EASTERN MISSOURI AS WELL AS WEST CENTRAL AND SOUTHWEST ILLINOIS. .DAY ONE...TODAY AND TONIGHT THERE IS SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE REGION. WHILE THERE IS A CHANCE OF THUNDERSTORMS THROUGHOUT THE DAY...THE GREATEST RISK FOR SEVERE WEATHER WILL BE TONIGHT. ONE OR MORE COMPLEXES OF THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE CENTRAL PLAINS DURING THE LATE AFTERNOON AND EVENING....AND MOVE EASTWARD INTO THE REGION TONIGHT. THESE STORMS WILL BE CAPABLE OF PRODUCING LARGE HAIL...DAMAGING WINDS AND LOCALLY HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE ACTIVE PATTERN WILL CONTINUE ON SUNDAY AND MONDAY ACROSS THE REGION WITH A CONTINUED RISK OF SEVERE THUNDERSTORMS. THE COMBINATION OF VERY WARM AND UNSTABLE AIR ENTRENCHED ACROSS THE MISSISSIPPI VALLEY REGION...ALONG WITH MIGRATING UPPER LEVEL DISTURBANCES...WILL RESULT IN SEVERAL ROUNDS OF THUNDERSTORMS FROM LATE SUNDAY THROUGH MONDAY. THE MAIN SEVERE WEATHER THREAT FROM THESE STORMS WILL BE LARGE HAIL...DAMAGING WINDS AND LOCALLY HEAVY RAINFALL. THERE IS A CHANCE OR SLIGHT CHANCE FOR THUNDERSTORMS DURING THE PERIOD FROM TUESDAY THROUGH THURSDAY NIGHT. THIS PERSISTENT THUNDERSTORM THREAT IS DUE TO THE COMBINATION OF AN UNSTABLE SUMMERTIME AIRMASS...AND A SERIES OF WEAK UPPER LEVEL DISTURBANCES. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY...BUT MAY BE NEEDED TONIGHT. GLASS
The St Louis radar (KLSX), 107 km away, was scanning. The volume nearest the first event began at 12:06 UTC.
1 thunderstorm wind. Local standard time, as filed.
An early morning thunderstorm caused scattered wind damage in Sparta. Large tree limbs and a few power lines were down. At least 1000 people lost power for about 4 hours.
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, June 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: 5402277.