Isolated air mass thunderstorms produced strong winds and hail during the early evening.
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 episode as NWS SGF wrote it up.
Isolated air mass thunderstorms produced strong winds and hail during the early evening.
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 Aug 11, 5:19 PM CST, 1 hour 35 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPRINGFIELD MO
619 PM CDT WED AUG 11 2010
...UPDATE TO AVIATION...
.UPDATE...
ISOLATED THUNDERSTORMS HAD DEVELOPED DURING THE HEAT OF THE DAY
ACROSS THE MISSOURI OZARKS. STORMS WERE MORE NUMEROUS FARTHER
NORTH FROM EAST CENTRAL KANSAS INTO WEST CENTRAL MISSOURI IN
ASSOCIATION WITH A MINOR SHORTWAVE. WILL CLOSELY MONITOR THE
PROGRESSION OF THESE STORMS AS THEY TRACK INTO CENTRAL MISSOURI.
EXPECT THIS ACTIVITY TO GRADUALLY DIMINISH AFTER SUNSET BUT MAY LINGER
LONGER WITH THE SUPPORT OF THE SHORTWAVE. OTHERWISE LITTLE RELIEF
FROM THE HEAT CAN BE EXPECTED INTO THE EVENING HOURS.
FOSTER
&&
.DISCUSSION...
/ISSUED 210 PM CDT WED AUG 11 2010/
MAIN FOCUS IN THIS FORECAST PACKAGE WILL CONTINUE TO DEAL WITH THE
HOT AND HUMID CONDITIONS...ALONG WITH THE POTENTIAL FOR ISOLATED
THUNDERSTORMS EACH AFTERNOON THROUGH FRIDAY. THEN ATTENTION TURNS
TO COOLER CONDITIONS AND PRECIPITATION CHANCES ASSOCIATED WITH A
COLD FRONTAL PASSAGE LATE FRIDAY INTO THIS WEEKEND.
CURRENTLY...THE HOT CONDITIONS CONTINUE AS TEMPERATURES ARE ONCE
AGAIN IN THE 90S WITH SOME AREAS AROUND THE 100 DEGREE MARK ACROSS
SOUTHERN MISSOURI AND SOUTHEAST KANSAS EARLY THIS AFTERNOON. HEAT
INDEX VALUES ARE IN THE 100 TO 106 RANGE AND WILL CONTINUE TO WARM
INTO THE 103 TO 110 RANGE THIS AFTERNOON.
ISOLATED THUNDERSTORMS ARE ALSO DEVELOPING ACROSS SOUTHERN AND
SOUTH CENTRAL MISSOURI THIS AFTERNOON. THE POTENTIAL FOR ISOLATED
THUNDERSTORMS WILL CONTINUE INTO THE EARLY EVENING HOURS. THE
BEST COVERAGE SHOULD BE SOUTH OF THE AREA...BUT THE POTENTIAL IS
STILL THERE. THERE WILL BE A LIMITED RISK FOR SEVERE THUNDERSTORM
WIND GUSTS AND HEAVY RAINFALL WITH ANY OF THE STRONGER STORMS.
THESE STORMS WILL BE PULSE IN NATURE AND SHOULD WEAKEN AND
DISSIPATE AS THE SUN SETS.
THE UPPER LEVEL RIDGE WILL REMAIN OVER THE REGION THROUGH
FRIDAY...WITH THE HOT CONDITIONS CONTINUING. TEMPERATURES WILL
GENERALLY REMAIN VERY SIMILAR TO WHAT HAS BEEN OBSERVED THE LAST
SEVERAL DAYS...AS TEMPERATURES WARM INTO THE UPPER 90S TO AROUND
100 DEGREES. A FEW MORE AREAS COULD HIT THE 100 DEGREE MARK ACROSS
SOUTHEAST KANSAS AND SOUTHERN MISSOURI ON THURSDAY AND FRIDAY. DEW
POINTS WILL REMAIN IN THE MIDDLE 60S TO LOWER 70S EACH
AFTERNOON...WHICH WILL RESULT IN HEAT INDEX VALUES IN THE 103 TO
110 DEGREE RANGE. A FRONT WILL START TO APPROACH THE AREA
FRIDAY...WHICH COULD RESULT IN DEW POINTS POOLING ACROSS THE AREA
AHEAD OF THE FRONT...WHICH MAY RESULT IN MORE AREAS HEAT INDEX
READINGS APPROACHING THE 110 MARK. THE HEAT WARNING ACROSS THE
ENTIRE AREA THROUGH FRIDAY STILL LOOKS IN GOOD SHAPE AND WILL
CONTINUE AS IS.
A COLD FRONT WILL PUSH SOUTH INTO THE AREA FRIDAY NIGHT INTO
SATURDAY AS AN UPPER LEVEL TROUGH TO THE NORTH FLATTENS THE RIDGE.
THE FRONT WILL BRING BETTER CHANCES FOR WIDESPREAD SHOWERS AND
THUNDERSTORMS TO THE AREA FRIDAY NIGHT INTO SATURDAY. A SECOND
WEAK UPPER LEVEL DISTURBANCE MAY PASS THROUGH THE AREA ON
SUNDAY...KEEPING SHOWER AND THUNDERSTORM CHANCES IN THE FORECAST.
ANOTHER UPPER LEVEL TROUGH IS THEN EXPECTED TO DIVE OUT OF THE
NORTH AND MAY PROVIDE PRECIPITATION CHANCES AGAIN DURING THE
MIDDLE OF NEXT WEEK. A PATTERN CHANGE IS IN STORE BEHIND THE FRONT
AS NORTHWEST FLOW ALOFT SETS UP THIS WEEKEND INTO NEXT WEEK WITH
COOLER CONDITIONS EXPECTED.
WISE
&&
.AVIATION...
/ISSUED 612 PM CDT WED AUG 11 2010/
VFR CONDITIONS WILL CONTINUE AT AREA TERMINALS THROUGH THURSDAY AS
HIGH PRESSURE AT THE SURFACE AND ALOFT REMAIN THE DOMINANT WEATHER
FEATURES. ISOLATED THUNDERSTORMS WILL DEVELOP DURING THE HEAT OF
THE DAY BUT ANY IMPACT WILL BE VERY LOCALIZED.
FOSTER
&&
.SGF WATCHES/WARNINGS/ADVISORIES...
MO...EXCESSIVE HEAT WARNING UNTIL 9 PM CDT FRIDAY FOR MOZ055>058-
066>071-077>083-088>098-101>106.
KS...EXCESSIVE HEAT WARNING UNTIL 9 PM CDT FRIDAY FOR KSZ073-097-101.
&&HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SPRINGFIELD MO 102 PM CDT WED AUG 11 2010 KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-121815- 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- 102 PM CDT WED AUG 11 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE MISSOURI OZARKS AND EXTREME SOUTHEAST KANSAS. .DAY ONE...THIS AFTERNOON AND TONIGHT. THE HAZARDOUS WEATHER RISK LEVEL IS...SIGNIFICANT. WEATHER HAZARDS EXPECTED... SIGNIFICANT EXCESSIVE HEAT RISK. LIMITED THUNDERSTORM WIND RISK FOR WINDS IN EXCESS OF 50 MPH. LIMITED FLOODING RISK. LIMITED LIGHTNING RISK. DISCUSSION... HOT CONDITIONS WILL CONTINUE ACROSS THE AREA THIS AFTERNOON AS HEAT INDICES WILL RANGE FROM 103 TO 110 DEGREES. AN EXCESSIVE HEAT WARNING IS IN EFFECT FOR THE ENTIRE OUTLOOK AREA INTO EARLY FRIDAY EVENING. ISOLATED THUNDERSTORMS WILL ALSO BE POSSIBLE THIS AFTERNOON INTO THE EARLY EVENING HOURS ACROSS THE ENTIRE OUTLOOK AREA. A FEW STORMS MAY PRODUCE WIND GUSTS IN EXCESS OF 50 MPH...FREQUENT LIGHTNING STRIKES AND HEAVY RAINFALL... WHICH COULD LEAD TO LOCALIZED FLASH FLOODING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. AFTERNOON HEAT INDICES WILL CONTINUE TO CLIMB TO BETWEEN 103 AND 110 DEGREES EACH AFTERNOON THROUGH FRIDAY. ISOLATED THUNDERSTORMS WILL BE POSSIBLE EACH AFTERNOON THROUGH FRIDAY. A FEW STORMS MAY PRODUCE WIND GUSTS IN EXCESS OF 50 MPH AND HEAVY RAINFALL...WHICH COULD LEAD TO LOCALIZED FLASH FLOODING. A COLD FRONT WILL THEN PASS THROUGH THE REGION EARLY THIS WEEKEND...BRINGING A BETTER CHANCE FOR THUNDERSTORMS FROM FRIDAY NIGHT INTO THIS WEEKEND. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IN NOT EXPECTED TO 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) WISE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD MO 202 PM CDT WED AUG 11 2010 MOZ106-112000- OREGON MO- 202 PM CDT WED AUG 11 2010 ...SIGNIFICANT WEATHER ALERT FOR EASTERN OREGON COUNTY UNTIL 300 PM CDT... AT 158 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR GREER...OR 20 MILES NORTHEAST OF THAYER... MOVING SOUTHEAST AT 5 MPH. WINDS AROUND 50 MPH ARE EXPECTED WITH THIS STORM. THIS STORM WILL BE NEAR... GREER BY 210 PM CDT. ALTON BY 225 PM CDT. WILDERNESS BY 300 PM CDT. THUNDERSTORMS POSE A VARIETY OF HAZARDS TO THOSE OUTDOORS...INCLUDING HAIL... STRONG WINDS THAT CAN CREATE DANGEROUS FLYING PROJECTILES AND DEBRIS...AS WELL AS DEADLY CLOUD TO GROUND LIGHTNING. IF YOU ARE IN THE PATH OF THIS STORM...MOVE INDOORS TO A STURDY SHELTER IMMEDIATELY. DSA
The Springfield radar (KSGF), 69 km away, was scanning. The volume nearest the first event began at 00:54 UTC.
1 thunderstorm wind, 1 hail. Local standard time, as filed.
Downburst winds peeled a metal roof off of an outbuilding that was open on one side.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2010Every state in 2010This day in weather historyWarnings in Missouri, August 2010
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: 248368, 245837.