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 St. Louis, MO wrote its last area forecast discussion before the first event at Jul 24, 3:00 AM CST, 3 hours 45 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 400 AM CDT TUE JUL 24 2001 RADAR SHOWS AREA OF TSTMS ACRS STL METRO AREA AND PTS S AND E...WITH NEW DVLPMT NOTED JUST S AND W OF STL CITY. MODELS SHOWING VORT LOBE IN VCNTY AND THIS FEATURE HAS BEEN SLOLY DRIFTING SWD IN VRY LGT UPR FLO. 06Z SFC ANALYSIS IND TROF BISECTING MO WITH CDFNT ACRS UPR MIDWEST OVR NRN IA. SAT PIX SHOWS BAND OF MID CLD ACRS SRN HALF OF FA. FCST PROB FOR THE MRNG PACKAGE IS HEAT INDICES ACRS FA ALG W/ PCPN CHCS. 00Z MODELS IN FAIRLY GOOD AGRMT...ALTHOUGH THE BASIC PREMISE OF ETA BEING MORE NLY WITH SFC FNT AND SLOWER WITH EWD PROPAGATION OF MID-LVL TROF THAN NGM/AVN RMNS THE SAME. GIVEN HOW ALL MODELS SHOW FLATTENING MID-LVL FLO...LIKE AVN MOVMT OF S/W BTR THAN ETA...AND THIS IN TURN WL SPD SFC FNT UP WITH ITS NWLY FLO IN ITS WAKE ALG WITH CONVECTION FIRING ALG FNT TO PUSH EFFECTIVE BDRY FURTHER S AND E. THIS IS NORMALLY AN ETA STRENGTH...SO RATHER ODD HOW MODELS HAVE PLAYED OUT NXT TWO DAYS. FOR TDA...TSTMS ACRS STL METRO AND PTS S AND E WL CONT THRU MOST OF MRNG HRS FOR SRN/ERN ZONES...THO SHD END ERL THIS MRNG FOR STL METRO...AS VORT LOBE PUSHES SWD THRU FA TWDS BOOTHEEL. MORE SUNSHINE IN AFTN IN VERY MOIST AMS AND BDRY EXISTING ACRS FA WL PROMOTE ADDITIONAL TSTM DVLPMT LTR THIS PD AND THIS WL CARRY INTO ERL PART OF TNGT. MID CLD DECK OVR SRN ZONES XPCTD TO THIN BY ERL AFTN WHICH WL ALLOW HEAT INDICES TO SOAR INTO WRNG CRITERIA AGAIN THIS PD...THOUGH NOT WITH AS MUCH CONFIDENCE AS IN PREV DAYS DUE TO CLD CVR IN MRNG. FOR TNGT...MCS WL REFIRE AGAIN OVR IA FM /OLD/ MCV AND ALG SFC FNT MOVG SWD. MODELS SEEM TO IND TWO BDRYS MERGING AS ONE THIS PD ACRS NRN ZONES AS SFC WAVE PROPAGATES EWD ACRS MO/IA LN. XPCT NRN ZONES TO BE IN BEST POSN FOR RAFL...WITH SUM RENEGADE CELLS MAKING IT AS FAR S AS I-70 CORR LATE. FAIRLY HI POPS AND ABUNDANT CLD CVR ON WED SHD PRECLUDE ANY HEAT HDLNS IN FCST...AND AVN SUGGESTS THAT ONLY SERN MO WL SEE CHC FOR RAIN ON THU WITH MUCH COOLER TEMPS THKS TO NELY SFC FLO. .STL...EXCESSIVE HEAT WRNG TDA ALL XCP NE MO/W CNTRL IL TES
The St Louis radar (KLSX), 50 km away, was scanning. The volume nearest the first event began at 12:44 UTC.
1 flash flood. Local standard time, as filed.
Heavy early morning rain caused scattered flash flooding across Jefferson County. Interstate 55 had to be closed at a couple of spots due to high water. Creeks in the De Soto area flooded covering roads and threatening a few homes.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2001Every state in 2001This day in weather historyWarnings in Missouri, July 2001
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: 5258550.