A cluster of thunderstorms trained over sections of central Missouri. Flash flooding occurred within the city of Rolla.
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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.
A cluster of thunderstorms trained over sections of central Missouri. Flash flooding occurred within the city of Rolla. Also a section of Highway BB near St. James became impassable to motorists due to flooding.
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 28, 8:23 PM CST, 1 hour 6 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SPRINGFIELD MO 923 PM CDT THU AUG 28 2008 ...MESOSCALE CONVECTIVE DISCUSSION... .UPDATE... THUNDERSTORM ACTIVITY IS BEGINNING A DOWNWARD TREND IN TERMS OF SEVERITY. WHILE MLCAPE VALUES ARE STILL IN EXCESS OF 3000 TO 4000 J/KG OUT AHEAD OF THE ACTIVITY...THE GUST FRONT HAS BEGUN TO OUTRUN THE CONVECTION ACROSS MUCH OF CENTRAL MISSOURI. THE CONVECTION IS ALSO BEGINNING TO DIVE SOUTH OF THE BEST DEEP LAYER SHEAR...WITH 0-6 KM SHEAR ACROSS MUCH OF SOUTHWEST MISSOURI LESS THAN 20 KTS. A FEW CELLS HAVE BEEN ABLE TO DEVELOP OUT AHEAD OF THE MAIN AREA OF CONVECTION ACROSS PHELPS AND PULASKI COUNTIES. THIS ACTIVITY HAD SHOWN A FEW SIGNS OF PROMISE BUT IS LACKING THE SHEAR TO ORGANIZE INTO ANY SEVERE THREAT AT THE MOMENT. THE STRONGEST AREA OF THUNDERSTORMS HAS ISOLATED ITSELF FROM THE REST OF THE LINE ACROSS EAST CENTRAL KANSAS. SHEAR IS SLIGHTLY BETTER WITH THIS ACTIVITY BUT IT ALSO HAS SHOWN SIGNS OF DECREASING INTENSITY OVER THE PAST HOUR AND ITS GUST FRONT ALSO APPEARS TO BE RUNNING OUT AHEAD. ELEVATED THUNDERSTORMS HAVE DEVELOPED IN THE WAKE OF THE COLD FRONT AND MAY PROVIDE THE BEST CHANCE FOR RAIN TO THE CENTRAL CWA OVERNIGHT...BUT THIS WILL NEED TO BE MONITORED AS THE EVENING PROGRESSES AND THE SOUTHWARD PROGRESSION OF THE FRONTAL BOUNDARY SLOWS. TEMPERATURES AND POPS HAVE BEEN ADJUSTED FOR GUST FRONT AND PRECIPITATION ARRIVAL THROUGH 12Z. BARJENBRUCH && .DISCUSSION... MAIN FORECAST CHALLENGES/HIGHLIGHTS IN THIS FORECAST PACKAGE DEAL WITH AN APPROACHING COLD FRONT AND THE ASSOCIATED SHOWER AND THUNDERSTORM CHANCES TONIGHT AND FRIDAY. SHORT TERM (TONIGHT THROUGH SATURDAY NIGHT)... CURRENTLY...AN OUTFLOW BOUNDARY IS LOCATED ACROSS CENTRAL MISSOURI WHERE SHORT LIVED ISOLATED CONVECTION IS DEVELOPING. THE MAIN COLD FRONT REMAINS WELL TO THE NORTH AS IT IS JUST ENTERING EXTREME NORTHWESTERN MISSOURI. A LINE OF THUNDERSTORMS IS CURRENTLY DEVELOPING ALONG THE FRONT AS IT SLOWLY PUSHES SOUTH. ISOLATED THUNDERSTORMS DEVELOPMENT WILL CONTINUE TO BE POSSIBLE ACROSS CENTRAL MISSOURI AS THE ATMOSPHERE HAS BECOME QUITE UNSTABLE AS ML CAPES RANGE FROM 3000-4000J/KG ACROSS THE AREA. DRIER AIR ALOFT IS LIMITING THE THUNDERSTORM POTENTIAL ACROSS MUCH OF THE CWA...BUT WITH THE WEAK BOUNDARY ACROSS CENTRAL MISSOURI SOME SHORT LIVED ISOLATED SHOWERS AND THUNDERSTORMS HAVE BEEN ABLE TO DEVELOP. THE SHOWERS AND THUNDERSTORMS THAT HAVE DEVELOPED ALONG THE FRONT ACROSS NORTHERN MISSOURI WILL CONTINUE TO PUSH SOUTH TOWARDS THE NORTHERN CWA LATER THIS EVENING. INSTABILITY WILL BEGIN TO DECREASE AS THE SUN BEGINS TO SET...BE ENOUGH INSTABILITY SHOULD STILL BE IN PLACE FOR A FEW STORMS TO BECOME STRONG TO MARGINALLY SEVERE THIS EVENING ALONG THE FRONT. HAVE RAISED POPS ACROSS CENTRAL MISSOURI TO ACCOUNT FOR THIS ACTIVITY. THE BETTER UPPER LEVEL DYNAMICS WILL REMAIN NORTH OF THE AREA...SO THERE SHOULD NOT BE MUCH IN THE WAY OF A LOW LEVEL JET TO KEEP THE CONVECTION ON GOING OVERNIGHT. THEREFORE...THE CONVECTION SHOULD WEAKEN AND BECOME LESS WIDESPREAD AND MORE SCATTERED IN NATURE IF IT DOES NOT DIE OUT ALTOGETHER DURING THE OVERNIGHT HOURS. THE FRONT WILL LIKELY BE LOCATED ROUGHLY ALONG THE HIGHWAY 60 CORRIDOR ON FRIDAY. THE FRONT SHOULD BE THE FOCUS FOR REDEVELOPMENT OF SCATTERED SHOWERS AND THUNDERSTORMS ACROSS THE SOUTHERN HALF OF THE CWA LATE FRIDAY MORNING INTO THE EVENING HOURS BEFORE THE FRONT PUSHES SOUTH AND OUT OF THE AREA. A DRIER AND SLIGHTLY COOLER AIRMASS WILL MOVE INTO THE AREA BEHIND THE FRONT...LEAVING SATURDAY TEMPERATURES NEAR TO SLIGHTLY BELOW NORMAL WITH LITTLE IN THE WAY OF PRECIPITATION CHANCES EXPECTED AT THIS TIME. WISE LONG TERM (SUNDAY THROUGH THURSDAY)... MED RANGE MODELS CONTINUE TO EXHIBIT DECENT AGREEMENT WITH THE OVERALL UPPER LEVEL PATTERN. UPPER RIDGING WILL BUILD OVER THE EASTERN CONUS WITH TROUGHING NOTED OVER THE WEST. QUIET WEATHER CONDITIONS AND SEASONABLY WARM TEMPERATURES ARE EXPECTED SUNDAY THROUGH TUESDAY. UPPER RIDGING WILL BE THE STRONGEST OVER THE EASTERN CONUS AT THIS TIME...KEEPING THE STRONGER BELT OF WESTERLIES WELL TO OUR NORTH AND WEST. ENERGY EJECTING FROM THE WESTERN TROUGH WILL HEAD INTO THE DAKOTAS AND UPPER MIDWEST. THIS WILL ALLOW A COLD FRONT TO APPROACH THE AREA...BUT IT QUICKLY BECOMES PARALLEL TO THE UPPER FLOW... STALLING JUST TO OUR NORTHWEST BY MIDWEEK. IN THE MEANTIME... ALL EYES WILL BE ON THE BEHAVIOR OF GUSTAV. THE EVENTUAL PATH OF GUSTAV WILL IN NO SMALL PART BE AIDED BY THE STRENGTH AND POSITIONING OF THE UPPER RIDGING OVER THE EASTERN CONUS. AS SUCH...THERE REMAINS A DECENT AMOUNT OF MODEL SPREAD FOR LOCATION OF THIS STORM HEADING INTO SUNDAY AND MONDAY. THE CURRENT ENVELOPE OF MODEL SOLUTIONS FOR GUSTAV ARE EYEING A LANDFALL ON THE CENTRAL GULF COAST REGION. THOSE WITH HOLIDAY WEEKEND PLANS IN ANY AREA ALONG THE GULF COAST SHOULD CLOSELY MONITOR THE FORECAST FOR THIS SYSTEM AS IT WILL LIKELY STRENGTHEN INTO A STRONG HURRICANE. ANY AFFECTS GUSTAV MAY HAVE ON OUR SENSIBLE WEATHER WILL BE GOVERNED BY ITS EVENTUAL PATH...WHICH IS UNCERTAIN AT BEST THIS FAR IN ADVANCE. THE FARTHER WEST GUSTAV TRAVELS...THE BETTER CHANCE WE MAY BE AFFECTED LOCALLY. WILL NEED TO MONITOR THIS FEATURE CLOSELY IN FUTURE FORECASTS. HAVE TRENDED SLIGHTLY COOLER AND WETTER FOR THE WED/THUR FORECAST. GAGAN && .AVIATION... FOR THE 00Z KSGF/KJLN TAFS...SOUTHERN MISSOURI PRETTY MUCH ECHO FREE ON RADAR AT THIS TIME. WITH SUNSET...BELIEVE CUMULUS WILL PRETTY MUCH DIE OUT. OVERNIGHT A COLD FRONT WILL DROP SOUTH TOWARDS THE TAF SITES BRINGING CHANCES FOR SCATTERED THUNDERSTORMS TO THE AREA. THE FRONT WILL BE LOCATED NEAR THE TAF SITES FRIDAY MORNING...WITH ADDITIONAL SHOWER AND THUNDERSTORM DEVELOPMENT POSSIBLE DURING THE DAY TOMORROW. CLAYCOMB && .SGF WATCHES/WARNINGS/ADVISORIES... MO...NONE. KS...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SPRINGFIELD MO 712 PM CDT THU AUG 28 2008 KSZ073-097-101-MOZ055>058-066>071-077>083-088>098-101>106-300015- 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- 712 PM CDT THU AUG 28 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF THE MISSOURI OZARKS AND EXTREME SOUTHEAST KANSAS. .DAY ONE...TONIGHT. WIDESPREAD THUNDERSTORM DEVELOPMENT HAS TAKEN PLACE ALONG A COLD FRONT EXTENDING FROM SOUTH CENTRAL KANSAS INTO NORTHEASTERN MISSOURI. AS THE FRONT DRIFTS SOUTH OVERNIGHT... SCATTERED STRONG THUNDERSTORMS... WITH ISOLATED SEVERE THUNDERSTORMS...WILL PUSH INTO AREAS MAINLY ALONG AND NORTH OF HIGHWAY 60 THROUGH DAYBREAK. ANY SEVERE THUNDERSTORMS WILL BE CAPABLE OF PRODUCING DAMAGING WINDS TO 60 MPH AND HAIL TO THE SIZE OF QUARTERS. THUNDERSTORM SEVERITY SHOULD GRADUALLY DECREASE AS THE NIGHT PROGRESSES. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. SCATTERED THUNDERSTORMS WILL LIKELY BE ONGOING FRIDAY AS THE FRONT CONTINUES TO PUSH SOUTH THROUGH THE AREA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING NORTH OF AN OSCEOLA TO OSAGE BEACH LINE...AND THROUGH THE OVERNIGHT HOURS ALONG AND NORTH OF HIGHWAY 60. && 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) BARJENBRUCH
The St Louis radar (KLSX), 126 km away, was scanning. The volume nearest the first event began at 03:27 UTC.
1 flash flood. Local standard time, as filed.
Numerous city streets in Rolla experienced flash flooding from a training cluster of thunderstorms. A section of Highway BB near St. James also experienced flash flooding.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2008Every state in 2008This day in weather historyWarnings in Missouri, August 2008
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: 123462.