1 lightning, 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 St. Louis, MO wrote its last area forecast discussion before the first event at Jul 28, 2:30 AM CST, 1 hour earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 330 AM CDT MON JUL 28 2003 .DISCUSSION... BEEN SITTING HERE WATCHING THE RADAR AND LOOKING AT MODEL DATA SINCE 1100 PM LAST NIGHT...AND STILL DONT HAVE A REALLY GOOD FEEL FOR HOW THE PRECIPITATION IS GOING TO DEVELOP/MOVE THROUGH THE CWFA TODAY. THERE JUST DOESNT SEEM TO BE ANYTHING...ANY MAGIC BULLET...TO REALLY INDICATE EXACTLY WHERE THIS RAIN IS GOING TO GO TODAY. THAT BEING SAID THERE ARE SOME CLUES TO BE HAD IN THE MODEL DATA. 850MB MOISTURE ADVECTION/CONVERGENCE SEEMS TO BE WHATS DRIVING THE PRECIPITATION CURRENTLY. THIS IS SHOWING UP PRETTY WELL IN BOTH THE RUC AND THE 00Z ETA. ALSO...WEAK SHORT WAVE ENERGY IS DROPPING SOUTHEASTWARD OUT OF THE HIGH PLAINS INTO IOWA AT THIS TIME AT AROUND 500MB. THIS COULD ALSO HELP TO ENHANCE AND KEEP PRECIPITATION GOING TODAY. VERY WEAK SURFACE CONVERGENCE IS ALSO APPARENT ALONG THE OLD FRONTAL BOUNDARY WHICH IS STRETCHING EAST-WEST THROUGH CENTRAL MISSOURI. RUC AND ETA DONT MOVE THIS FRONT AT ALL UNTIL THIS AFTERNOON...AND THIS COULD BE A SOURCE FOR ADDITIONAL CONVECTIVE DEVELOPMENT TODAY. THE 850MB FORCING WEAKENS AS THE DAY GOES ON AS WINDS VEER NORTHERLY AND THE FRONT FINALLY BEGINS MOVING SOUTH. WOULD THINK THIS WOULD TEND TO SHUT DOWN PRECIP UP NORTH AND FIRE IT OFF ALONG THE FRONT THIS AFTERNOON. THEORETICALLY... AFTER THIS FRONT MOVES THROUGH THIS EVENING...ANOTHER STRETCH OF QUIET AND SEASONABLY MILD WEATHER SHOULD BE IN STORE FOR THE CWFA. WE SHOULD SEE GRADUALLY DROPPING DEWPOINTS AND AFTERNOON HIGHS IN THE MID 80S JUST ABOUT EVERYWHERE. MOS GUIDANCE WAS VERY CONSISTENT AND THE NUMBERS VARIED LITTLE FROM MODEL TO MODEL. USED A COMBINATION OF MOS AND 850MB TEMPS FOR HIGHS...ACTUALLY DIDNT STRAY TOO FAR FROM GUIDANCE. && .LSX WATCHES/WARNINGS/ADVISORIES... MO...NONE. IL...NONE. && CARNEY
ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-281200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 620 AM CDT SUN JUL 27 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL AND EASTERN MISSOURI AND WEST CENTRAL AND SOUTHWEST ILLINOIS. .DAY ONE...TODAY AND TONIGHT A COLD FRONT WILL MOVE INTO NORTHERN MISSOURI THIS AFTERNOON. THUNDERSTORMS ARE EXPECTED TO FORM ALONG AND AHEAD OF THE COLD FRONT THIS AFTERNOON AND TONIGHT. WIDESPREAD SEVERE WEATHER FROM THESE STORMS IS NOT EXPECTED ALTHOUGH SOME OF THE STORMS MAY BE QUITE STRONG IN THE HOT AND HUMID AIRMASS SOUTH OF THE COLD FRONT. THERE IS THE POTENTIAL FOR HEAVY RAIN WITH THE THUNDERSTORMS TONIGHT. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THUNDERSTORMS WILL CONTINUE ACROSS THE AREA ON MONDAY AND MONDAY EVENING AS THE COLD FRONT CONTINUES TO MOVE SLOWLY SOUTHWARD THROUGH THE AREA. AGAIN...WIDESPREAD SEVERE WEATHER IS NOT EXPECTED FROM THESE THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. && MORE INFORMATION MAY BE OBTAINED AT... HTTP://WWW.CRH.NOAA.GOV/LSX (ALL LOWER CASE) CARNEY
The national radar mosaic for the moment the first event began.
1 lightning. Local standard time, as filed.
A lightning strike at a substation knocked out power to about 6000 homes in Hannibal.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2003Every state in 2003This day in weather historyWarnings in Missouri, 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: 5376789.