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 Apr 20, 11:30 AM CST, 10 hours 32 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 1230 PM CDT TUE APR 20 2004 .DISCUSSION... A WARM FRONT EXTENDED FROM SOUTHEAST NEB ACROSS NORTHERN MO EARLY THIS AFTERNOON. FRONT WILL LIFT NORTHWARD TODAY AND TONIGHT AS A LOW PRESSURE SYSTEM MOVES OUT OF THE CENTRAL PLAINS. TRAILING COLD FRONT IS FORECAST TO MOVE INTO THE REGION ON WEDNESDAY. THE ETA, GFS AND UKMET ARE SIMILAR IN SWEEPING OUT THE DEEPER MOISTURE TO OUR SOUTHEAST ON WEDNESDAY WITH THE K INDEX LESS THAN 20 ACROSS THE REGION AT NOON. MOISTURE FORECAST TO RETURN TO SOUTHERN PORTION OF THE AREA WEDNESDAY NIGHT. 80 KT H3 JET IS FORECAST TO MIGRATE INTO THE SOUTHERN PLAINS FROM THE WEST COAST WEDNESDAY NIGHT. JET STREAK ALSO FORECAST ACROSS THE OH VALLEY AT THAT TIME. THE ETA AND UKMET ARE SIMILAR WITH UPPER DYNAMICS AND MOISTURE RETURN WHILE THE GFS APPEARS TO HAVE CONVECTIVE FEEDBACK PROBLEMS. WILL FOLLOW THE TREND OF THE ETA, UKMET AND NGM QPF FOR WEDNESDAY NIGHT. THE 00Z RUNS OF THE GFS AND ECMWF ARE FAIRLY SIMILAR AT H5 WITH SHORT WAVE OVER THE PACIFIC NORTHWEST WEDNESDAY EVENING. MODELS DIG THE SYSTEM INTO THE 4 CORNERS AREA BY THURSDAY EVENING AND CLOSE IT OFF. MODELS FORECAST THE TROF TO MOVE ACROSS THE MIDWEST LATER ON SATURDAY AS UPSTREAM TROF ROLLS ACROSS THE CANADIAN ROCKIES. AS A RESULT, BOTH MODELS FORECAST SIGNIFICANT 850 MOISTURE TRANSPORT/CONVERGENCE INTO MO ON SATURDAY BEFORE COLDER AND DRIER AIR MOVES IN ON SUNDAY. && .LSX WATCHES/WARNINGS/ADVISORIES... .MO...NONE. .IL...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 330 PM CDT TUE APR 20 2004 ILZ058-059-095>099-MOZ018-019-026-027-034>036-041-042-047>052-059- 060-211100- ADAMS IL-AUDRAIN-BOONE-BROWN-CALHOUN IL-CALLAWAY-COLE-GASCONADE- GREENE IL-JERSEY IL-KNOX-LEWIS-LINCOLN-MACOUPIN IL-MARION-MONITEAU- MONROE-MONTGOMERY-OSAGE-PIKE-PIKE IL-RALLS-SHELBY-WARREN- 330 PM CDT TUE APR 20 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST AND CENTRAL MISSOURI...AS WELL AS WEST CENTRAL ILLINOIS. .DAY ONE...TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE ENTIRE AREA TONIGHT. THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AND JUST AHEAD OF A COLD FRONT AS IT MOVES SOUTHEASTWARD THROUGH THE REGION. A FEW STORMS MAY BE CAPABLE OF PRODUCING DAMAGING WINDS OR LARGE HAIL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS A CHANCE OF THUNDERSTORMS THURSDAY THROUGH SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TONIGHT. ILZ060-064-065-069-070-074-079-100>102-MOZ061>065-072>075-084-085- 099-211100- BOND IL-CLINTON IL-CRAWFORD-FAYETTE IL-FRANKLIN-IRON-JEFFERSON- MADISON-MADISON IL-MARION IL-MONROE IL-MONTGOMERY IL-RANDOLPH IL- REYNOLDS-ST CHARLES-ST CLAIR IL-ST FRANCOIS-ST LOUIS-ST LOUIS CITY- STE GENEVIEVE-WASHINGTON-WASHINGTON IL- 330 PM CDT TUE APR 20 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A PORTION OF EAST CENTRAL AND SOUTHEAST MISSOURI...AS WELL AS SOUTHWEST ILLINOIS. .DAY ONE...TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE ENTIRE AREA TONIGHT. THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AND JUST AHEAD OF A COLD FRONT AS IT MOVES SOUTHEASTWARD THROUGH THE REGION. A FEW STORMS MAY BE CAPABLE OF PRODUCING DAMAGING WINDS OR LARGE HAIL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS A CHANCE OF THUNDERSTORMS WEDNESDAY THROUGH SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED TONIGHT.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1011 PM CDT TUE APR 20 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
1002 PM TSTM WND DMG 3 NE FULTON 38.88N 91.91W
04/20/2004 CALLAWAY MO LAW ENFORCEMENT
TREE DOWN ON ROUTE Z JUST NE OF FULTON
&&
FGPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1011 PM CDT TUE APR 20 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
1002 PM TSTM WND DMG 3 NE FULTON 38.88N 91.91W
04/20/2004 CALLAWAY MO LAW ENFORCEMENT
TREE DOWN ON ROUTE Z JUST NE OF FULTON
&&
FGThe national radar mosaic for the moment the first event began.
1 thunderstorm wind. Local standard time, as filed.
Local law enforcement reported trees down on Route Z near Fulton.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2004Every state in 2004This day in weather historyWarnings in Missouri, April 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: 5391698.