1 thunderstorm wind, as filed by the National Weather Service.
Every event with a place to put it. 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 Springfield, MO wrote its last area forecast discussion before the first event at May 21, 5:53 PM CST, 2 hours 7 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SPRINGFIELD MO 653 PM CDT SUN MAY 21 2006 .UPDATE... MCV STILL EVIDENT AT THIS TIME ON BOTH SATELLITE AND RADAR OVER SOUTHEAST KANSAS. HOWEVER...JUST ENOUGH CAP STILL PRESENT TO KEEP ALL BUT ISOLATED CONVECTION SUPPRESSED. CAPES GREATER THAN 2500 J/KG STILL PRESENT OVER SOUTHWESTERN CORNER OF MISSOURI...SO HAIL STILL THE MAIN THREAT IF CONVECTION INITIATES. FOCUS OVERNIGHT THEN SHIFTS TO HEAVY RAIN. WITH A QUASI-STATIONARY BOUNDARY OVER THE AREA AND LOTS OF MOISTURE IN PLACE...COULD SEE TRAINING ECHOES ONCE LOW LEVEL JET DEVELOPS. && .AVIATION... FOR THE 00Z TAFS...AN APPROACHING MCV COUPLED WITH A WEAK STATIONARY BOUNDARY WILL PRODUCE ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS THROUGH 09Z...BUT EXPECT CONDITIONS TO REMAIN VFR AT BOTH TERMINALS THROUGH THIS PERIOD. THE REMAINING LOW LEVEL MOISTURE WILL ALLOW VISIBILITIES TO FALL TO MVFR CONDITIONS EARLY TOMORROW MORNING BEFORE IMPROVING TO VFR AFTER SUNRISE. GAEDE && .PREV DISCUSSION...422 PM. AFTER MUCH THOUGHT AND DEBATE...DECIDED TO ISSUE A FLASH FLOOD WATCH FOR THIS EVENINGS UPCOMING EVENT. 18Z SGF SOUNDING SHOWING CELL MOVEMENT TO ONLY BE ABOUT 13 KTS. WITH THE MCV STILL MAKING ITS WAY INTO SOUTHEASTERN KANSAS AND SOUTHWESTERN MISSOURI...DO BELIEVE THIS WILL STILL BE THE LIFTING MECHANISM TO GET THE CONVECTION GOING. SINCE WE DO HAVE A LOT OF FOLKS OUT ON VARIOUS LAKES AND STREAMS IN THE AREA...DECIDED IT PRUDENT TO GET A WATCH OUT WITH PLENTY OF ADVANCED NOTICE. GCC && .PREV DISCUSSION...228 PM. FORECAST CHALLENGE WILL BE CONVECTION THAT WILL FORM ALONG THE VARIOUS BOUNDARIES IN PLACE OVER THE CWA THIS AFTERNOON AND EVENING. ALSO MAX TEMPERATURES IN THE EXTENDED FOR NEXT WEEK. SATELLITE AND RADAR IMAGERY SHOWING THUNDERSTORMS FIRING ALONG A WHAT APPEARS TO BE A DEWPOINT DISCONTINUITY LINE EXTENDING FROM EAST CENTRAL KANSAS IN AN ARCING PATTERN THROUGH CENTRAL MISSOURI DOWN INTO SOUTHEASTERN MISSOURI. DEWPOINTS SOUTH OF THE DISCONTINUITY IN THE 70S...WHILE NORTH OF THE LINE DEWPOINTS ARE IN THE LOW 60S. MCV OVER EAST CENTRAL KANSAS MAKING ITS WAY INTO THE PICTURE AS WELL AS OUTER BANDS STARTING TO INTERACT WITH THIS BOUNDARY. 18Z SGF SOUNDING SHOWING 3500 J/KG CAPE WITH ABOUT 75 CIN AND A WEAK CAPPING INVERSION THAT SHOULD BREAK AROUND 85 DEGREES. MCV STARTS MAKING ITS WAY INTO SOUTHWESTERN MISSOURI AROUND 21Z AND THIS SHOULD BE AROUND MAX HEATING TIME. SOUTHWESTERN PORTIONS OF THE CWA RECEIVED THE MOST SUNSHINE TODAY. ALL THIS POINTS TO THIS AREA BEING THE FOCUS POINT FOR ANY SEVERE WEATHER TODAY. WBZ A LITTLE HIGH ON THE SOUNDING AROUND 11K FEET...BUT WITH A LITTLE COLD AIR IN THE UPPER LEVELS WITH THE MCV...BELIEVE WBZ SHOULD LOWER TO A MORE FAVORABLE HEIGHT. THEREFORE...WENT WITH PREDOMINANT THREAT TO BE QUARTER SIZED HAIL AND POSSIBLY SOME TRAINING OF CELLS ALONG THE THE DISCONTINUITY LINES THAT COULD PRODUCE SOME FLASH FLOODING. DECIDED TO HOLD OFF ON WATCH FOR NOW FOR FLASH FLOODING AS MODEL QPF OUTPUTS ONLY SHOWING UP TO A HALF INCH OF RAINFALL. WILL HAVE TO WATCH THIS CLOSELY WHEN CELLS DO GET GOING. UPPER TROUGH MAKES ITS WAY THROUGH SOUTHEASTERN MISSOURI AROUND 06Z AS FRONT CONTINUES TO SAG SOUTH INTO ARKANSAS. WE RETURN TO AN EASTERLY WIND AT 925MBS AND NORTHERLY ABOVE THAT. MOST ACTIVITY AFTER 06Z SHOULD BE OFF IN OUR SOUTHEASTERN ZONES WITH GRADUAL CLEARING THROUGH THE EARLY MORNING. UPPER RIDGE BUILDS IN OVER THE STATE MONDAY AFTERNOON FOR A BRIEF RESPITE IN WARM TEMPERATURES MONDAY INTO TUESDAY. TRIED TO DEPICT COOLER TEMPS IN OUR NORTHEASTERN ZONES IN THE LOW TO MID 70S WITH THE SOUTHWESTERN PORTIONS OF THE CWA REACHING THE MID 80S MONDAY AND TUESDAY. BY TUESDAY NIGHT INTO WEDNESDAY...A PIECE OF ENERGY FROM THE CLOSED LOW CURRENTLY OFF THE CENTRAL CALIFORNIA COAST BEGINS TO MOVE INTO THE CENTRAL PLAINS. MODELS SEEM TO BE IN FAIRLY GOOD AGREEMENT WITH THIS FEATURE...SO WENT WITH CHANCE POPS ACROSS ALL OF THE FORECAST AREA FOR LATE TUESDAY NIGHT THROUGH WEDNESDAY. BELIEVE MOST ENERGY THOUGH WITH THIS FEATURE WILL BE UP NORTH OF US OVER NEBRASKA AND IOWA. THURSDAY THROUGH SATURDAY...ANOTHER RIDGE BUILDS INTO THE AREA WITH DAYTIME TEMPERATURES BACK INTO THE MID 90S FOR OUR SOUTHWESTERN ZONES WITH MID 80S ELSEWHERE. DEWPOINTS ARE GOING TO REMAIN FAIRLY HIGH AS WE SET UP A RETURN OF LOW LEVEL SOUTHERLY FLOW FROM THE GULF. LOOKS LIKE A HOT AND HUMID END TO THE WEEK. GCC && .SGF WATCHES/WARNINGS/ADVISORIES... MO...FLASH FLOOD WATCH IN EFFECT UNTIL 3 AM MONDAY SOUTH OF A NEVADA TO LEBANON TO EMINENCE LINE. KS...FLASH FLOOD WATCH IN EFFECT UNTIL 3AM MONDAY. WFO SGF
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SPRINGFIELD MO 105 PM CDT SUN MAY 21 2006 KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-221815- BOURBON-CRAWFORD-CHEROKEE-BENTON-MORGAN-MILLER-MARIES-VERNON- ST. CLAIR-HICKORY-CAMDEN-PULASKI-PHELPS-BARTON-CEDAR-POLK-DALLAS- LACLEDE-TEXAS-DENT-JASPER-DADE-GREENE-WEBSTER-WRIGHT-NEWTON- LAWRENCE-CHRISTIAN-DOUGLAS-HOWELL-SHANNON-MCDONALD-BARRY-STONE- TANEY-OZARK-OREGON- 105 PM CDT SUN MAY 21 2006 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE MISSOURI OZARKS AND EXTREME SOUTHEAST KANSAS. .DAY ONE...THIS AFTERNOON AND TONIGHT. WEATHER HAZARDS EXPECTED: ISOLATED SEVERE THUNDERSTORMS PRODUCING... HAIL UP TO THE SIZE OF QUARTERS AND LOCALLY HEAVY RAINFALL. AREAS AFFECTED AND TIMING: NON-SEVERE THUNDERSTORMS AFFECTING CENTRAL AND EAST CENTRAL MISSOURI THIS AFTERNOON AND EVENING. ISOLATED SEVERE THUNDERSTORMS SOUTH OF A LINE FROM PETERSBURG KANSAS TO LEBANON TO EMINENCE LATE THIS AFTERNOON AND EVENING. DISCUSSION: A WEAK FRONTAL BOUNDARY NEAR THE ARKANSAS BORDER...ANOTHER WEAK FRONTAL BOUNDARY OVER CENTRAL MISSOURI AND SEVERAL OUTFLOW BOUNDARIES FROM EARLY MORNING CONVECTION AND RESIDUAL DEEP MOISTURE ACROSS THE REGION...WILL SET THE STAGE FOR ADDITIONAL SHOWERS AND THUNDERSTORMS LATE THIS AFTERNOON AND EVENING. MODEST INSTABILITY AND SHEAR WILL ALLOW FOR AN ISOLATED SEVERE HAIL THREAT MAINLY DURING THE AFTERNOON AND EVENING. SHOWERS AND THUNDERSTORMS...ONCE THEY DO GET GOING...WILL TEND TO TRAIN OVER AREAS AS THEY MOVE ALONG THE VARIOUS BOUNDARIES ALREADY IN PLACE. THIS COULD LEAD TO VERY HEAVY RAINFALL OVER A SMALL GEOGRAPHICAL AREA. FLASH FLOODING IS VERY POSSIBLE LATE THIS AFTERNOON AND EVENING. AVOID LOW WATER CROSSINGS AND AREAS PRONE TO FLASH FLOODING LATE THIS AFTERNOON THROUGH THIS EVENING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE MONDAY ACROSS EAST CENTRAL MISSOURI. ANOTHER CHANCE OF THUNDERSTORMS DEVELOP LATE TUESDAY INTO WEDNESDAY AS ANOTHER COLD FRONT APPROACHES THE REGION. .SPOTTER INFORMATION STATEMENT... DUE TO THE ISOLATED NATURE OF THE SEVERE STORMS...SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT. && THIS PRODUCT IS NOW AVAILABLE IN GRAPHICAL FORMAT...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION...AT HTTP://WWW.CRH.NOAA.GOV/SGF(ALL LOWERCASE) CLAYCOMB
The Springfield radar (KSGF), 44 km away, was scanning. The volume nearest the first event began at 01:59 UTC.
1 thunderstorm wind. Local standard time, as filed.
Severe thunderstorm wind gusts destroyed a grill and a swing set near the community of Half Way. Two large oak trees were also uprooted.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2006Every state in 2006This day in weather historyWarnings in Missouri, May 2006
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: 5508739.