1 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 Kansas City, MO wrote its last area forecast discussion before the first event at Aug 5, 2:00 AM CST, 1 hour earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO 300 AM CDT THU AUG 5 2004 .DISCUSSION... STRATUS HAS BEEN ERODING EARLY THIS MORNING AS DRIER AIR ADVECTS IN FROM THE NORTHEAST. MID LEVEL COLD ADVECTION HAS ALSO AIDED IN THE EROSION OF THE LOW CLOUD DECK BY EATING INTO THE INVERSION LAYER ABOVE THE STRATUS. THE RUC MODEL SIMULATED THE LOW LEVEL ATMOSPHERIC PROFILE THE BEST DURING THIS UNUSUAL EARLY AUGUST STRATUS EVENT. USING THE RUC FORECAST SOUNDINGS AND 925MB RELATIVE HUMIDITIES, THE LOW CLOUD DECK SHOULD BE ERODED IN ALL BUT THE PAOLA AND BUTLER AREAS BY SUNRISE. WITH THE EXCEPTION OF SOME CIRRUS BLOW OFF FROM STORMS ON THE HIGH PLAINS THE FORECAST AREA SHOULD ENJOY MOSTLY SUNNY SKIES TODAY. TEMPERATURES WILL DROP TO NEAR RECORD LEVELS TONIGHT. KANSAS CITYS RECORD LOW IS 55 DEGREES (1990) AND SAINT JOSEPHS IS 54 DEGREES (ALSO 1990). ONE MUST LOOK TO SOUTHERN MINNESOTA AND WISCONSIN TO FIND LOW TO MID 50S DEWPOINTS ON THIS MORNINGS SURFACE CHART. GETTING THIS DRY AIR INTO NORTHWEST MISSOURI, FOR OPTIMAL RADIATIONAL COOLING, MAY BE TOUGH WITH RELATIVELY MOIST SOIL CONDITIONS IN THE REGION. CIRRUS BLOW OFF FROM STORMS ON THE HIGH PLAINS TONIGHT MAY ALSO IMPEDE RADIATIONAL COOLING SOMEWHAT. SAINT JOSEPH WILL PROBABLY HAVE A BETTER SHOT TO BREAK THE RECORD TONIGHT SINCE THE ASOS SITS IN THE MISSOURI RIVER VALLEY. WINDS THERE WILL LIKELY DECOUPLE EARLY THIS EVENING. THE SENSOR AT MCI SITS CONSIDERABLY HIGHER IN ELEVATION AND WILL LIKELY ENDURE AN EAST WIND AROUND 5KTS ALL NIGHT LONG. COOL SURFACE HIGH PRESSURE WILL RESIDE OVER THE MIDWEST THROUGH THE EARLY PART OF THE WEEKEND. AN AREA OF LOW PRESSURE OFF THE COAST OF THE PACIFIC NORTHWEST WILL ULTIMATELY TRACK INTO THE NORTHERN PLAINS ON SUNDAY AND DISLODGE IT. GULF MOISTURE WILL BE SLOW TO RETURN TO THE CENTRAL AND SOUTHERN PLAINS ON SUNDAY NIGHT AND MONDAY AS THE COLD FRONT ASSOCIATED WITH THE AFOREMENTIONED UPPER LOW TRACKS INTO THE REGION. THE ECMWF AND GFS ARE SIMILAR WITH THE TIMING OF THESE FEATURES, BUT MOISTURE RETURN WILL DETERMINE WHETHER CONVECTION WILL BE ISOLATED OR WIDESPREAD WITH FRONTAL PASSAGE EARLY NEXT WEEK. FOR NOW WE HAVE ONLY 30 TO 40 PERCENT CHANCES FOR THUNDERSTORMS ON SUNDAY AND MONDAY. KOCH && .PREV DISCUSSION... 1030 PM WED... DOING A QUICK REVISION TO RAISE MINS A BIT TONIGHT. DEWPOINTS NOT DROPPING AS MUCH AS EXPECTED. MAY ALSO SEE SOME AREAS OF FOG IF WINDS DROP OFF MORE THAN EXPECTED. WILL NOT MENTION AT THIS POINT...BUT SOMETHING TO WATCH OUT FOR. PC && 328 PM WED... SURFACE FRONT ALMOST THROUGH ENTIRE FORECAST AREA THIS AFTERNOON...MOVING SLOWLY IN THE SOUTHEAST CORNER. SHOULD BE THROUGH KDMO IN THE NEXT COUPLE OF HOURS. FROPA IS ASSOCIATED WITH A FEW SPRINKLES AND A LOW DECK OF STRATUS. BEHIND THE FRONT THE CLOUD DECK HAS SLOWLY RAISED...WITH SOME BREAKS IN NORTHERN MISSOURI. FORECAST TONIGHT IS CONCERNED CLOUDS AND TEMPS. IF UPSTREAM IS ANY INDICATION...SHOULD SEE BROKEN CLOUDS THROUGH MUCH OF THE EVENING. SHOULD SEE SOME CLEARING AFTER MIDNIGHT. AVE NOT INCLUDED ANY FOG IN THE GRIDS OR THE TAFS...BUT AS TEMPS DROP NEAR THE DEWPOINT /LOWER 60S/ IT IS POSSIBLE. MAY SEE CEILINGS BRIEFLY DROP TO 1000FT AND 3-5SM. HAVE PUT LOWS JUST A DEG OR TWO UNDER GUIDANCE. H8 TEMPS FOR THURSDAY DROP TO AROUND +13. SHOULD SEE SOME CU DEVELOP...SO HAVE KEPT HIGHS RIGHT AROUND 80 WHICH IS NEAR THE PREV FORECAST AND MET GUID. SURFACE HIGH PRESSURE IN CONTROL FOR THE REST OF THE WORK WEEK WITH A MINOR WARMING TREND TO ENSUE. GOING INTO THE WEEKEND...SEASONALLY NORMAL TEMPERATURES WILL TRY TO REASSERT THEMSELVES AS THE RIDGE OVER THE DESERT SOUTHWEST AMPLIFIES AND TRAVERSES EAST INTO THE PLAINS STATES. LATE IN THE WEEKEND AND EARLY NEXT WEEK A LOW OVER THE EAST COAST WILL LIFT THROUGH THE ST LAWRENCE RIVER VALLEY...WHILE AN EAST PACIFIC LOW BEATS DOWN THE MIDWEST RIDGE AND ALLOWS STILL MORE UNSEASONABLY COOL AIR TO FILTER SOUTH. THE MODELS ARE NOT IN COMPLETE AGREEMENT WITH HOW MUCH COOL AIR WILL WORK SOUTH. THE GFS IS SLOWER TO LIFT THE EAST COAST LOW THROUGH THE ST LAWRENCE VALLEY. THIS WOULD ALLOW THE SHORTWAVE...THAT IS FORECAST TO BEAT THE RIDGE DOWN...A CHANCE TO CARVE OUT A DEEP TROUGH ACROSS THE MIDWEST. THUS...PUSHING A DECENT COLD FRONT THROUGH MISSOURI SUNDAY/MONDAY. THE ECMWF AND UKMET ARE A LITTLE FASTER WITH LIFTING THE EAST COAST LOW...WHICH ULTIMATELY DOES NOT ALLOW AS MUCH TROUGHING ACROSS THE MIDWEST...AND THEREFORE INDICATES A MUCH WEAKER FRONTAL PASSAGE SUNDAY NIGHT. THE GFS LOOKS TO BE SUFFERING FROM SOME CONVECTIVE FEED BACK PROBLEMS WITH THE SHORTWAVE THAT IS PROGGED TO CARVE OUT NEXT WEEKS TROUGH...WHICH LEADS ONE TO THINK THAT THIS IS LEADING TO THE ANONYMOUSLY STRONG TROUGH SOLUTION. THEREFORE...I MADE MY ADJUSTMENTS TO THE GOING FORECAST BASED ON THE ECMWF SOLUTION. I PUSHED UP THE FRONTAL PASSAGE ENOUGH TO WARRANT STICKING THUNDERSTORMS INTO SUNDAY NIGHT...WHILE KEEPING THEM IN THE EAST CWA FOR MONDAY. OTHERWISE...I ONLY MADE MINOR MODIFICATIONS TO TEMPERATURES NEXT WEEK BY COOLING THINGS OFF A LITTLE...BUT KEPT TEMPS WARMER THAN THE MEX GUIDANCE. LVQ/CUTTER && .EAX WATCHES/WARNINGS/ADVISORIES... KS...NONE. MO...NONE. && WFOEAX
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO 1246 PM CDT WED AUG 4 2004 KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040- 043>046-053-054-051100- 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 NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS ARE FORECAST FOR SUNDAY NIGHT AND MONDAY. AT THIS TIME...SEVERE THUNDERSTORMS LOOK POSSIBLE WITH THIS ACTIVITY...MAINLY SUNDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. && 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. LVQ
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Grand River near Sumner crested at 27.04 feet, or 1.04 feet above flood stage.
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, August 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: 5420806.