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 Aug 18, 1:55 AM CST, 7 hours 35 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ST LOUIS MO 255 AM CDT SUN AUG 18 2002 MCS OVR NW MO CONTS TO GROW AND BCM BTR ORGANIZED IN RESPONSE TO STRENGTHENING LLJ AND LRG SCALE LIFT ASSOCD WITH ERN KS SHRT WV TROF. PRINDS ARE THAT MCS SHUD CONT TO TRACK EWD THIS MRNG WITH VEERING LLJ AND MIGRATING SHRT WV. THE QUESTION IS HOW MUCH SEWD DEVIATION WL OCCUR. CFM VECTORS SHWG SOME WK SEWD COMP BUT HV YET TO SEE ANYTHING OTR THAN EWD MOTION THUS FAR. AT ANY RATE WL HV CAT OR LIKELY POPS NRN SECTIONS AND WL MAKE A LAST MINUTE CALL ALG I-70 ON HOW HARD TO HIT POPS. MDLS SUGGEST LIFT ASSOCD WITH TROF WL HV SHIFTED EAST OF THE CWFA BY ERLY AFT. THERE CUD BE SOME SCT REDEVELOPMENT INVOF OF THE FNT THIS AFT WHICH SHUD BE JUST NORTH OF I-70 BY 00Z TNGT. ATTENTION THEN TURNS TO WHAT LKS LIKE AN ACTV NGT ACRS THE CNTRL PLAINS AND MID MS VLY. AMS ALG AND SOUTH OF THE FNT WL BCM VERY UNSTBL THIS AFT...SPCLY OVR KS AND WRN MO. CNVCTN SHUD DVLP ALG AND NORTH OF THE FNT OVR NRN KS/SRN NEB LATE THIS AFT AS SHRTWV TROF NOW OVR THE NRN ROCKIES BGNS TO EXERT INFLUENCE AS IT MOVS INTO THE PLAINS. AN MCS SHUD ORGANIZE AND THEN TRACK SEWD IN ADVANCE OF THE FNT/SFC LOW...MIGRATING SHRTWV AND VEERING AND STRENGTHENING LLJ. PROGRESSION OF SYNOPTIC SCALE SYSTEMS AND VEERING LLJ SUGGEST MCS SHUD BE PROGRSV AND MAY BRING A THREAT OF DAMAGING WNDS TO THE CWFA...SPCLY NRN SXNS...LATER TNGT. THERE CUD BE SOME UPSTRM PROP ON THE SWRN FLANK OF THE MCS WHERE THE LLJ RESULTS IN GD SR CNVRGNC...LEADING TO TRAINING OVR NRN MO. THIS ALG WITH HI PWS APCHG 150-180% OF NRML WUD SUGGEST POTNTL FOR HVY RN DURING OVERNGT TIME FRAME. WONT GET TOO FANCY ON MON WITH AVN MUCH FASTER THAN ETA WITH FNT AND ONGOING CNVCTN LIKELY AT THE START OF THE PD. TMPS WL BE DOWN A CAT OR TWO FM TDA. OTW FEW IF ANY CHGS TO PDS BYD MON NGT. WHEREEVER FNT EVENTUALLY SETTLES...THE AVN SUGGESTS IT WL RETURN BACK NWD BY MIDWK AS THE UPR RDG REBUILDS OVR THE CNTRL/ERN U.S.. .STL...NONE GLASS
ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-181700- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ST LOUIS MO 720 AM CDT SAT AUG 17 2002 HAZARDS THROUGH TONIGHT... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT OVER ALL OF CENTRAL AND EASTERN MISSOURI AND WESTERN ILLINOIS. LOCALLY HEAVY RAINFALL IS ALSO POSSIBLE TONIGHT...ESPECIALLY OVER NORTHEAST MISSOURI AND WEST CENTRAL ILLINOIS. DISCUSSION... A LARGE COMPLEX OF SHOWERS AND THUNDERSTORMS WILL PRODUCE HEAVY DOWNPOURS AND GUSTY WINDS TO 40 MPH IT MOVES SOUTHEAST ACROSS EASTERN MISSOURI AND SOUTHWEST ILLINOIS THIS MORNING. THIS COMPLEX SHOULD WEAKEN BY MID-MORNING AND BE OUT OF THE AREA BY MIDDAY. A FRONT WILLL THEN WAVER NEAR I-70 THIS AFTERNOON AND COULD BE THE FOCUS FOR ADDITIONAL SCATTERED THUNDERSTORMS THIS AFTERNOON AND EARLY THIS EVENING. THE GREATEST RISK OF SEVERE WEATHER HOWEVER WILL BE TONIGHT WHEN ANOTHER COMPLEX OF THUNDERSTORMS IS EXPECTED TO ROLL SOUTHEAST ACROSS THE REGION FROM THE PLAINS. THE PRIMARY HAZARD FROM THIS LATER COMPLEX OF THUNDERSTORMS WILL BE DAMAGING WINDS AND LOCALLY HEAVY RAINFALL. THE OUTLOOK FOR MONDAY... SEVERE THUNDERSTORMS ARE NOT EXPECTED ACROSS THE REGION. THERE WILL HOWEVER BE SCATTERED THUNDERSTORMS ACROSS THE AREA...SOME OF WHICH COULD BE QUITE STRONG WITH GUSTY WINDS AND SMALL HAIL. && THIS PRODUCT WILL BE ISSUED BETWEEN 6 AND 8 AM DAILY...AND WILL BE UPDATED AS NEEDED. FOR DETAILED INFORMATION ON A PARTICULAR HAZARD...MAKE SURE TO REFER TO THE ZONE FORECASTS AND THE ACTUAL WATCH...WARNING OR ADVISORY PRODUCT. GLASS
The St Louis radar (KLSX), 97 km away, was scanning. The volume nearest the first event began at 15:31 UTC.
1 flash flood. Local standard time, as filed.
Rainfall of 3 to 4 inches flooded several roads primarily across western Crawford County. Highway M flooded as did several nearby secondary roads.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2002Every state in 2002This day in weather historyWarnings in Missouri, August 2002
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: 5309556.