A cold front stalled along the Interstate 20 corridor and served as a focus for afternoon thunderstorm development. One storm became severe south of the city of Weatherford producing nickel size hail and downburst winds.
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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 FWD wrote it up.
A cold front stalled along the Interstate 20 corridor and served as a focus for afternoon thunderstorm development. One storm became severe south of the city of Weatherford producing nickel size hail and downburst winds. Flash Flooding was also reported in Sulphur Springs, where several water rescues were performed.
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 Fort Worth, TX wrote its last area forecast discussion before the first event at Aug 1, 5:15 AM CST, 4 hours 45 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE FORT WORTH TX 615 AM CDT SAT AUG 1 2009 .AVIATION... STILL TIMING TSTM LINE INTO DFW AREA NEAR 9 AM...BUT IT HAS BECOME LESS LINEAR OVER THE LAST FEW HOURS...MAY NOT EVEN MAINTAIN THIS FAR SOUTH AND EAST. HAVE KEPT CIGS/VSBYS VFR GIVEN THAT THE COLD POOL LOOKS LIKE IT IS WEAKENING AND STORMS ARE BECOMING MULTICELLULAR. AFTER TODAY...TSTM CHANCES DECLINE AND BY SUNDAY EVENING ALL POP CHANCES ARE OVER. 84 && .DISCUSSION...216 AM SHORTWAVE WILL CONTINUE TO ROTATE THROUGH BROAD...CENTRAL CONUS LONG-WAVE TROUGH ACROSS SRN KS/OK TODAY. MEANWHILE...WEAK FRONT DRAPED FROM NRN TX PANHANDLE...NEWD TO CENTRAL KS AND INTO IA WILL PUSH SLOWLY SE TOWARD AREA THROUGH TONIGHT...AIDED BY OUTFLOW FROM CURRENT NON-SEVERE SQUALL LINE EXTENDING FROM LUBBOCK...TO CHILDRESS ...WRN OK AND INTO SE KS. SEVERAL OLD OUTFLOW BOUNDARIES ALSO EXIST FROM SCATTERED SHOWERS/STORMS FRIDAY EVENING NORTH OF I-20. INTERPOLATION OF SQUALL LINE OVER NW TX/WRN OK...IF IT HOLDS TOGETHER...WILL TRACK INTO AREAS MAINLY NORTH OF I-20 CORRIDOR BEGINNING ACROSS FAR NW COUNTIES AROUND/SHORTLY AFTER DAYBREAK ...THEN TRANSVERSING ESE TOWARD THE ARK-LA-TX. EXPECT SOME WEAKENING BY THAT TIME...AS NOCTURNAL LLJ/MOISTURE ADVECTION SOURCE IS LOST BY MID-MORNING. HOWEVER...ISENTROPIC LIFT ACROSS OLD WEAK BOUNDARY ACROSS THE NORTH THIS AFTN WARRANTS CONTINUATION OF HIGHEST POPS ALONG/N OF I-20...WITH CONVECTION MORE ISOLATED-SCATTERED ACROSS THE SOUTH. ANY OUTFLOW FROM MORNING COMPLEX WILL LIKELY LINGER ACROSS NRN PARTS OF THE AREA FOR THIS AFTERNOON DURING STRONG/MAX DAYTIME HEATING. MAIN WILD CARD WILL BE HOW FAR EAST SHORTWAVE TO ROTATES THROUGH OK AND IF ANY SUBSIDENCE WINS OUT AND CREATES A STRONG EML/ CAPPING INVERSION ALOFT. FOR NOW...FEEL THE STRONG/EARLY AUGUST HEATING WILL BE ENOUGH TO KEEP ANY CAPPING INVERSION WEAK...ALONG WITH DEEP LAYER MOISTURE PRESENT ACROSS THE REGION THROUGH SUNSET. SHORTWAVE ROTATES AWAY FROM AREA TOWARD OZARKS/LOWER MS VALLEY LATE TONIGHT AND HAVE LEFT SOME LOW CHANCES LINGERING ACROSS AREAS EAST OF I-35 CORRIDOR. STRONGER NW FLOW ALOFT TRACK SHOULD PROGRESSIVELY SHIFT EAST OF NORTH TX SUNDAY AND INTO NEXT WEEK...AS UPPER HIGH THAT HAS BEEN CENTERED OVER THE SW STATES FOR A FEW WEEKS NOW...BUILDS EWD ACROSS OUR WEST/NORTH TX. GFS IS INDICATES A SLIGHTLY STRONGER SIGNAL ON UPPER HIGH INTENSITY...NOT TO MENTION GROUND MOISTURE THAT WILL NEED TO BE EVAPORATED OUT AFTER LITTLE BETTER THAN A WEEK OF OFF AND ON RAINFALL. EXPECT HOT AND HUMID CONDITIONS EARLY THIS WEEK...BUT NOTHING REALLY ABNORMAL SEASONABLY FOR HIGHS WITH UPPER 90S TO AROUND 100 BE THE RULE FOR HIGHS THROUGH THE WEEK. BY NEXT WEEKEND...ECMWF ACTUALLY WANTS TO SHIFT UPPER HIGH CENTER EAST OF AREA AND ALLOW A SUB-TROPICAL DISTURBANCE TO ROTATE NWWD TOWARD TX FROM THE WRN GULF OF MEXICO...WHILE GFS KEEPS THE UPPER HIGH CENTERED RIGHT OVER THE SRN PLAINS. WILL MAINTAIN DRY FORECAST WITH CONFIDENCE THIS FAR OUT LOW. 05/ && .PRELIMINARY POINT TEMPS/POPS... DALLAS-FT. WORTH, TX 95 74 99 75 99 / 60 30 20 5 5 WACO, TX 98 74 100 75 100 / 30 20 10 10 5 PARIS, TX 87 71 95 71 97 / 80 40 20 0 5 DENTON, TX 94 72 99 73 100 / 70 30 10 5 5 MCKINNEY, TX 91 69 97 71 98 / 70 40 20 5 5 DALLAS, TX 95 75 99 77 98 / 60 30 20 5 5 TERRELL, TX 93 73 98 73 98 / 60 30 20 5 5 CORSICANA, TX 94 74 98 74 99 / 30 20 20 10 5 TEMPLE, TX 99 74 98 73 99 / 20 20 10 10 5 && .FWD WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE FORT WORTH TX 458 AM CDT SAT AUG 1 2009 TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-021000- MONTAGUE-COOKE-GRAYSON-FANNIN-LAMAR-YOUNG-JACK-WISE-DENTON-COLLIN- HUNT-DELTA-HOPKINS-STEPHENS-PALO PINTO-PARKER-TARRANT-DALLAS- ROCKWALL-KAUFMAN-VAN ZANDT-RAINS-EASTLAND-ERATH-HOOD-SOMERVELL- JOHNSON-ELLIS-HENDERSON-COMANCHE-MILLS-HAMILTON-BOSQUE-HILL-NAVARRO- FREESTONE-ANDERSON-LAMPASAS-CORYELL-BELL-MCLENNAN-FALLS-LIMESTONE- LEON-MILAM-ROBERTSON- 458 AM CDT SAT AUG 1 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS. .DAY ONE...TODAY AND TONIGHT. THE THREAT OF THUNDERSTORMS CONTINUES ACROSS NORTH TEXAS THROUGH SUNDAY MORNING. THE MAIN THREATS WILL BE HEAVY RAIN...HAIL...LIGHTNING...AND DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. THERE IS A SLIGHT CHANCE OF THUNDERSTORMS SUNDAY ACROSS EASTERN PORTIONS OF NORTH TEXAS. ACTIVITY SHOULD DECREASE BY SUNSET. .SPOTTER INFORMATION STATEMENT... LIMITED SPOTTER ACTIVATION MAY BE REQUESTED.
The Dallas/Ft Worth radar (KFWS), 171 km away, was scanning. The volume nearest the first event began at 16:02 UTC.
1 flash flood, 1 thunderstorm wind, 1 hail. Local standard time, as filed.
Numerous streets were flooded in the city of Sulphur Springs. The water was knee to waist deep and several water rescues were performed for trapped motorists.
A trained spotter estimated a wind gust of 69 mph. The spotter also reported a broken window, shingles off a roof, and damage to large trees.
Nickel size hail was reported 7 miles south of Weatherford.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2009Every state in 2009This day in weather historyWarnings in Texas, August 2009
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: 192750, 190215, 190217.