5 hail, 2 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 2 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 Kansas City, MO wrote its last area forecast discussion before the first event at May 18, 2:35 PM CST, 3 hours 10 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO 335 PM CDT TUE MAY 18 2004 .DISCUSSION... MAIN FORECAST CONCERN IN THE SHORTER TERM IS WITH CHANCES OF PRECIPITATION AS PATTERN REMAINS QUITE UNSETTLED. WEAK WAVES IN FLOW ARE DIFFICULT AT BEST TO TIME. IN THE VERY NEAR TERM...WATCHING BOUNDARY THAT APPEARS TO BE SET UP FROM NEAR WICHITA...TO JUST SOUTH OF KANSAS CITY THEN INTO CENTRAL MISSOURI. WIND FIELDS IN MISSOURI STILL QUITE CHAOTIC DUE TO EARLIER CONVECTION SO CONVERGENCE ALONG THIS BOUNDARY IN THAT AREA IS MINIMAL. HOWEVER...WINDS ARE PICKING UP IN SOUTHEAST KANSAS AND COULD SEE ENOUGH LIFT TO GET SOMETHING BREAKING THROUGH THE CAP AND GOING ALONG THE FRONT JUST TO THE SOUTHWEST OF FORECAST AREA TOWARD 00Z. RUC MODEL HAS BEEN DEPICTING THIS SCENARIO FAIRLY WELL. SHOULD SEE CONVECTION BUILD EASTWARD INTO WEST CENTRAL MISSOURI ALONG THIS BOUNDARY WHERE ENOUGH SUNSHINE HAS CREATED SOME INSTABILITY THIS AFTERNOON. BUT CORFIDI VECTORS WOULD INDICATE IF THESE STORMS CAN BUILD INTO A COMPLEX...THEY WOULD WANT TO TREND SOUTHWARD WHICH MAKES SENSE GIVEN WHERE BETTER MOISTURE AND INSTABILITY RESIDE INTO NORTHEAST OKLAHOMA. IF A COMPLEX DOES DEVELOP...SHOULD HOLD BACK NORTHWARD MOVEMENT OF FRONT LATER TONIGHT AND ON WEDNESDAY MORNING. HAVE PULLED THUNDERSTORM CHANCES BACK FURTHER SOUTH ON WEDNESDAY MORNING TO ACCOUNT FOR THIS SLOWER RETURN. BY AFTERNOON...WITH BUILDING UPPER RIDGE...SHOULD SEE FRONT TAKE A JUMP UP TO THE NORTH AS WINDS PICK UP FROM THE SOUTH IN RESPONSE TO A DEVELOPING SURFACE WAVE IN WEST CENTRAL KANSAS. WILL LEAVE A CHANCE OF STORMS IN THE AFTERNOON NEAR IOWA BORDER...BUT EXPECTED TO BE PRETTY CAPPED ACROSS REST OF FORECAST AREA IN THE AFTERNOON. ON THURSDAY...SOME QUESTION ON WHERE FRONT WILL BE SETTING UP. ETA A LITTLE FURTHER SOUTH WITH IT SLICING INTO NORTHERN MISSOURI BY MIDDAY WHEREAS GFS KEEPS IT IN SOUTHERN IOWA. WITH WARM AIR MASS IN PLACE...WILL LEAN TOWARD GFS SOLUTION...WITH ONLY LOW POPS REMAINING IN THE EXTREME NORTHERN AREAS OF FORECAST REGION. PC IN THE LAST HALF OF THE FORECAST AN AMPLIFIED WEST COAST TROUGH AND EAST COAST RIDGE WILL DOMINATE THE NATION. THIS AMPLIFIED PATTERN WILL BE THE RESULT OF A STRONG EAST PACIFIC BLOCKING RIDGE THAT IS FORECAST TO HOLD STRONG THROUGH NEXT WEEK. THE LATEST RUNS OF THE MID RANGE MODELS ARE...IN GENERAL...ALL TRENDING TOWARDS THE SOLUTION OFFERED BY THE ECMWF. THE ONE NOTABLE DIFFERENCE WAS THAT GFS WANTED TO BEGIN TRANSLATING THE WEST COAST TROUGH ACROSS THE NATION BEGINNING EARLY NEXT WEEK. THIS SEEMS UNREASONABLE DUE TO THE ESTABLISHED BLOCKING RIDGE IN THE EAST PACIFIC...WHICH SHOULD SLOW ANY EASTWARD PROGRESSION OF THE THE WEST COAST TROUGH. THEREFORE I HAVE LEANED TOWARDS THE IDEA THAT THE TROUGH WILL COME OUT IN BITS AND PIECES...AS SHOWN BY THE ECMWF. WITH THIS IN MIND...EXPECTATIONS ARE THAT WEAK RIDGING WILL MOVE IN ACROSS THE CENTRAL PLAINS LATE THIS WEEK...WITH A LEE SIDE LOW SPINNING UP IN WEST KANSAS AND NEBRASKA IN ADVANCE OF THE DIGGING WEST COAST TROUGH. THIS WILL LIFT A WARM FRONT BACK THROUGH NORTHERN MISSOURI FRIDAY AND SATURDAY...HELPING TEMPERATURES RANGE 10 OR MORE DEGREES ABOVE NORMAL FOR THIS TIME OF YEAR. AS THE TROUGH DIGS INTO THE WEST COAST OVER THE WEEKEND IT IS THEN EXPECTED TO EJECT A SHORT WAVE THAT WILL ORGANIZE THE LEE SIDE LOW INTO A COLD FRONT DRAPED ACROSS THE MIDWEST. THIS FRONT WOULD THEN PUSH SOUTHEAST THROUGH MISSOURI SUNDAY/MONDAY. MOISTURE LOOKS A LITTLE MARGINAL AT THIS TIME...BUT WITH A FRONTAL BOUNDARY MOVING THROUGH SOME CHANCE THUNDERSTORM POPS LOOK REASONABLE FOR SUNDAY AND MONDAY. CUTTER && .PREV DISCUSSION... 420 AM... FORECAST CONCERN IS WITH PRECIP AND HEAVY RAIN POTENTIAL TODAY AND TONIGHT. MCS OVER SOUTHEAST NEBRASKA AND NORTHEAST KANSAS SHOULD CONTINUE TO MOVE EAST ACROSS MAINLY NORTHERN MISSOURI THIS MORNING AS MOIST LOW LEVEL JET CONTINUES TO FOCUS ACROSS THAT AREA. HEAVY RAIN IS EXPECTED HOWEVER THE HEAVIEST RAIN IS EXPECTED TO SHIFT SOUTH OF AREAS WHICH RECEIVED HEAVY RAIN OVERNIGHT. EXPECT MOST IF NOT ALL ON-GOING PRECIP TO DIMINISH BY AFTERNOON. HOWEVER NO CAP AND SURFACE BOUNDARIES IN THE AREA COULD SPARK CONVECTION SO HAVE MAINTAINED CHANCE POPS IN THE AFTERNOON. ANY STORMS WHICH DEVELOP MAY BE SEVERE WITH LARGE HAIL BEING THE PRIMARY THREAT. ANOTHER SHORTWAVE IS PROGGED TO MOVE ACROSS THE REGION OVERNIGHT. DUE TO UNCERTAINTY IN LOCATION OF THE STALLING FRONT AND TIMING OF THE SHORTWAVE...HAVE INCREASED POPS ONLY SLIGHTLY FOR ALL AREAS. SHOULD AN MCS DEVELOP AS EXPECTED...PRECIP MAY LINGER INTO WEDNESDAY MORNING ACROSS EASTERN SECTIONS OF THE FORECAST AREA. STRONG RIDGE BUILDS IN FOR WEDNESDAY THROUGH THE END OF THE WEEK. HAVE INCREASED TEMPS A FEW DEGREES FOR WEDNESDAY THROUGH FRIDAY AS 850MB TEMPS CLIMB INTO THE 20-22C RANGE. HAVE ALSO BUMPED MIN TEMPS UP A FEW DEGREES. NRR 930 PM MON... EARLY EVENING SURFACE ANALYSIS INDICATES FRONTAL BOUNDARY HAS PUSHED INTO EXTREME NORTHWEST MO. CONVECTION CONTINUES TO RE-DEVELOP ALONG/JUST NORTH OF THIS BOUNDARY ACROSS NORTHWEST MO/SOUTHEAST NE...AND EXPECT THIS TREND TO CONTINUE OVER THE NEXT FEW HOURS. MARGINAL INSTABILITY HAS KEPT THIS CONVECTION BELOW SEVERE LIMITS ACROSS CWA...WITH STRONGER CONVECTION LOCATED FURTHER NORTH ACROSS IA. FURTHER WEST CONVECTION HAS STRUGGLED THUS FAR TO DEVELOP/ORGANIZE ACROSS CENTRAL/WESTERN KS THIS EVENING...HOWEVER AS LOW LEVEL JET STRENGTHENS OVER NEXT COUPLE OF HOURS EXPECT CONVECTION TO INCREASE IN AREAL COVERAGE ACROSS CENTRAL KS...POSSIBLY ENCROACHING ON WESTERN CWA LATE TONIGHT. HAVE KEPT LIKELY POPS GOING ACROSS NORTHERN TWO TIERS OF COUNTIES THROUGH OVERNIGHT HOURS...WHILE CONFINING CHANCE POPS TO AFTER 03Z ACROSS REMAINDER OF CWA. SEAMAN && .EAX WATCHES/WARNINGS/ADVISORIES... KS...NONE. MO...NONE. EFFECTIVE JUNE 8, 2004...THE AWIPS PRODUCT IDENTIFIER /PID/ FOR THIS PRODUCT WILL CHANGE FROM AFDMCI TO AFDEAX. THE WMO HEADER WILL REMAIN UNCHANGED. PLEASE ENSURE THAT ANY NEEDED CHANGES ARE COMPLETED BY JUNE 8, 2004
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO 1242 PM CDT TUE MAY 18 2004 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-191100- THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST...NORTH CENTRAL AND WEST CENTRAL MISSOURI...AS WELL AS EXTREME EASTERN KANSAS. .DAY ONE...THIS AFTERNOON AND TONIGHT ISOLATED THUNDERSTORMS WILL BE POSSIBLE THROUGH THE MID AFTERNOON HOURS ACROSS PORTIONS OF EAST CENTRAL KANSAS AND WEST CENTRAL MISSOURI. STORMS MAY BECOME MORE ORGANIZED DURING THE LATE AFTERNOON HOURS ALONG A BOUNDARY THAT IS EXPECTED TO SET UP ACROSS THE SOUTHERN PORTIONS OF THE KANSAS CITY METRO AREA...EAST TO AROUND BOONVILLE MISSOURI. STORMS LATE THIS AFTERNOON WILL HAVE THE POTENTIAL OF PRODUCING LARGE HAIL. IF THE STORMS CAN DEVELOP ENOUGH TO TAP INTO THE SURFACE WIND FIELDS EVEN AN ISOLATED TORNADO OR WIND DAMAGE CAN NOT BE RULED OUT. THE STORMS THIS EVENING SHOULD BUILD SOUTH OUT OF THE OUTLOOK AREA. THEN LATE TONIGHT AS THE BOUNDARY BEGINS TO LIFT NORTH AS A WARM FRONT ADDITIONAL THUNDERSTORM DEVELOPMENT MAY TAKE PLACE. AGAIN THE MAIN THREAT FOR THESE STORMS WOULD BE HAIL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY WITH A VERY ACTIVE WEATHER PATTERN ACROSS THE CENTRAL PART OF THE COUNTRY...THUNDERSTORMS ARE FORECAST FOR SEVERAL PERIODS DURING THE EXTENDED OUTLOOK. FIRST ON WEDNESDAY MORNING...STORMS MAY BE LIFTING NORTH THROUGH THE NORTHERN HALF OF MISSOURI AND NORTHEAST KANSAS. IF NORTHERN MISSOURI DOES SEE THESE STORMS...THE ADDITIONAL HEAVY RAINFALL ON ALREADY SATURATED GROUND MAY LEAD TO FLOODING PROBLEMS. THESE STORMS MAY ALSO CONTAIN LARGE HAIL. BY LATER IN THE DAY...THE FRONT SHOULD BE FAR ENOUGH NORTH TO KEEP MOST OF THE THUNDERSTORM DEVELOPMENT NORTH OF MISSOURI. HOWEVER...IF STORMS CAN DEVELOP LATE IN THE DAY ON WEDNESDAY IN EXTREME NORTHERN MISSOURI...DAMAGING WINDS AND HAIL WOULD BE POSSIBLE. FURTHER OUT...ANOTHER FRONTAL BOUNDARY MOVING INTO THE AREA SATURDAY NIGHT AND SUNDAY WILL BRING MORE CHANCES OF THUNDERSTORMS...FIRST IN NORTHERN MISSOURI SATURDAY NIGHT...AND ACROSS THE ENTIRE OUTLOOK AREA SUNDAY AND SUNDAY NIGHT. THE BEST CHANCE OF SEVERE STORMS WILL BE WITH THE FRONT DURING THE DAY ON SUNDAY. THE NEXT CHANCE OF STORMS WILL BE MONDAY NIGHT WITH YET ANOTHER FRONTAL BOUNDARY. AGAIN SEVERE WEATHER MAY OCCUR WITH THIS FRONT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON AND EARLY EVENING IN AREAS SOUTH OF THE MISSOURI RIVER...LATE TONIGHT AND DURING THE MORNING ON WEDNESDAY ACROSS MAINLY NORTHWEST MISSOURI AND NORTHEAST KANSAS...AND POSSIBLE LATE IN THE DAY IN EXTREME NORTHERN MISSOURI ON WEDNESDAY. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC AND CLIMATE INFORMATION...IS AVAILABLE ON THE WEB AT (LOWER CASE) HTTP://WWW.CRH.NOAA.GOV/EAX OR HTTP://WEATHER.GOV. PC
The Pleasant Hill radar (KEAX), 121 km away, was scanning. The volume nearest the first event began at 02:51 UTC.
5 hail, 2 flash flood. Local standard time, as filed.
Heavy rains caused a brief evacuation of a trailer park due to rapidly rising waters. Water over Highway EE.
Heavy rains have caused over a foot of water on Highway 71.
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, May 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: 5399893, 5399890, 5399894, 5399891, 5399896, 5399892, 5399895.