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 Jul 20, 9:20 PM CST, 2 hours 50 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 1020 PM CDT SUN JUL 20 2003 .DISCUSSION... CERTAINLY AN INTERESTING EVOLUTION TO THE CNVTN OVR REGION THIS EVE. UNFORTUNATELY...TRENDS FOR OUR CWA STILL VRY MUCH UNCERTAIN. THRT APRS TO BE THREE-FOLD. THE FIRST FROM THE MCS CURRENTLY DROPPING S THRU SE NE AND NW MO...THE SCND FROM THE RPDLY DVLPG CLUSTER IN VCNTY OF KALO. THE THIRD...WHICH SHUD BE MUCH LESS WORRISOME AS FAR AS INTS PCPN IS CONCERNED...IS THE ZN OF WAA WHICH IS DVLPG CLDNS OVR KSTL AND ALSO PRODUCING SM SPOTTY SHWRS OVR S IL. IM BEGINNING TO THINK THAT THE MAIN PLAYER OVRNGT WL BE THE CNVTN CURRENTLY DVLPG OVR E IA. NOTICED SFC LO FORMING VCNTY OF KDSM AT 02Z...AND ACCORDING TO PROFILERS LLJ HAS REALLY RAMPED UP OVR S IA THE LAST FEW HRS. ANTICIPATE A BIT MORE SWD DVLPMT OVR THE NXT FEW HRS BFR IT BGNS RACING E-SE...WHICH WULD CLIP NE SECTIONS OF CWFA. IF CNVTN TRACKING THRU E KS AND NW MO KPS DROPPING S...WHICH IS SHUD...S SECTIONS OF CWFA CULD MISS OUT ON QUITE A BIT OF TNGTS PCPN. THFR...CHC POPS FOR THIS AREA STILL LK APPROPRIATE. GIVEN THE BIG DWPTS OVR AREA...BUMPED TEMPS A BIT MNLY ALG-S OF I-70 WHERE PCPN IS A BIT MORE IN DOUBT. && .LSX WATCHES/WARNINGS/ADVISORIES... MO...NONE. IL...NONE. TRUETT
ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-211800- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 1245 PM CDT SUN JUL 20 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND EASTERN MISSOURI AND WEST CENTRAL AND SOUTHWEST ILLINOIS. .DAY ONE...TONIGHT THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS TONIGHT ACROSS THE ENTIRE AREA AHEAD OF AN APPROACHING COLD FRONT. THE PRIMARY SEVERE WEATHER THREAT WILL BE DAMAGING WIND AND LARGE HAIL. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS AGAIN ON MONDAY...GENERALLY SOUTH AND EAST OF THE ST LOUIS METRO AREA AS THE COLD FRONT WILL CONTINUE TO PUSH THROUGH SOUTHEASTERN MISSOURI AND SOUTHERN ILLINOIS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TONIGHT. && MORE INFORMATION MAY BE OBTAINED AT... HTTP://WWW.CRH.NOAA.GOV/LSX (ALL LOWER CASE) CARNEY
The St Louis radar (KLSX), 150 km away, was scanning. The volume nearest the first event began at 06:12 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm wind gusts downed trees and power lines. Trees were reported down and blocking Hampshire Street between 22nd and 23rd streets.
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, July 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: 5376523.