1 thunderstorm wind, as filed by the National Weather Service.
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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, 3:25 AM CST, 1 hour 35 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 425 AM CDT FRI JUL 20 2001 NRW ZN OF WRM ADV DEPICTED BY MDLS FROM N CNTRL MO TO NR STL AREA KICKING OFF SCT SHRA/TSRA ERY THIS MRNG...AND XCP THIS TREND TO CONT THRUOUT MRNG. NOTICED THAT ETA FCSTS STM PROPAGATION VECTORS TO OPPOSE 85H FLOW OVR N MO AT 12Z...SO IN ADDITION TO HIGH OCTANE AMS PROVIDING THRT OF EXCESSIVE RAINS...STMS MAY TEND TO BE SLOW TO MV OUT OF A GIVEN AREA. WL MENTION HVY RAIN IN N ZNS FOR THIS MRNG. OVRALL IMPRESSION IS THAT UPR RDG WL BGN TO RE-EXERT ITS INFLUENCE ON THE AREA OVR THE NXT FEW DAYS...SLOWLY DMNSHG PCPN THRT WITH TIME AS RING OF FIRE PTRN SLOWLY PUSHES BACK NWD. THINK THAT THIS MRNGS ACTIVITY WL TEND TO WKN AS THE MRNG PROGRESSES...THEN MESO SCALE EFFECTS WL TAKE OVER AS THE MAIN IMPETUS FOR PCPN DURG THE HEAT OF THE AFTN/ERY EVE HRS. MDLS ADVERTISING ANOTHER MCS DVLPG ACR NE/IA TNGT...WHICH SHUD TRY TO ROLL INTO N SECTIONS OF CWFA DURG THE DAY ON SAT. ELSW...DONT SEE TOO MUCH TO DRIVE PCPN XCP UNSTBL AMS DURG THE AFTN HRS. HWVR...DONT FEEL COMFORTABLE PULLING PCPN ENTIRELY...AS MID LVL TEMPS AREN'T PROGGED TO WRM ENUF TO TOTALLY PRECLUDE SFC BASED CNVTN. THINK LO POPS IN CURRENT FCSTS ARE STILL APPROPRIATE. TEMP TRENDS RMN TRICKY DUE TO CLDS/PCPN. IN GENL...WENT SLGTLY BLO GUIDANCE MOST OF AREA TDA DUE TO PCPN...AND USED A COMPROMISE OF FWC/MAV NUMBERS ON SAT...WHICH REFLECTS SLGTLY WRMR TEMPS DUE TO FEWER CLDS/LESS PCPN. TEMP/RH TRENDS MAY PUSH SM AREAS TO NR ADVSRY CRITERIA ON SAT AND SUN IF PCPN THRT DOES DMNSH...WL NEED TO KP AN EYE ON THIS IF 12Z RUNS SUPPORT ABV THINKING. .STL...NONE TRUETT
The St Louis radar (KLSX), 89 km away, was scanning. The volume nearest the first event began at 10:59 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm wind gusts caused damage, mainly across the west part of Wellsville. 2 buildings suffered roof damage, a couple of utility poles were down, one tree fell on a house and another fell on a mobile home causing damage.
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: 5258462.