An upper level shortwave trough interacted with some low level moisture to produce isolated severe thunderstorms between Robert Lee and Brownwood.
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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 SJT wrote it up.
An upper level shortwave trough interacted with some low level moisture to produce isolated severe thunderstorms between Robert Lee and Brownwood.
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 San Angelo, TX wrote its last area forecast discussion before the first event at Sep 20, 3:30 PM CST, 1 hour 2 minutes earlier.
AREA FORECAST DISCUSSION...CORRECTED TYPOS NATIONAL WEATHER SERVICE SAN ANGELO TX 430 PM CDT SUN SEP 20 2009 .SHORT TERM... UPPER TROUGH WAS BRINGING SCATTERED THUNDERSTORMS FROM COLORADO CITY TO BIG LAKE...THEN TO SHEFFIELD IN WESTERN CROCKETT COUNTY AT 330 PM. MOVEMENT WAS SLOWLY TO EAST. ATMOSPHERE WAS SLIGHTLY UNSTABLE...WITH CAPES AROUND 1000 J/KG...SO STORMS HAVE THE POTENTIAL TO APPROACH SEVERE LIMITS. STORMS HOWEVER SHOULD RAPIDLY DECREASE WITH LOSS OF DAYTIME HEATING...SO HAVE ONLY MENTION OF ISOLATED THUNDERSTORMS TONIGHT. WILL CARRY AFTERNOON STORMS IN PRE PERIOD OF ZONE PACKAGE. HAVE A SLIGHT CHANCE OF THUNDERSTORMS MONDAY...MAINLY ACROSS THE BIG COUNTRY AND HEARTLAND...WITH A WEAK PRE FRONTAL TROUGH. .LONG TERM... COLD FRONT MOVES THROUGH MONDAY NIGHT...WITH SCATTERED SHOWERS TUESDAY. GFS SB CAPES UP TO 1600 J/KG ON MONDAY AFTERNOON...SO AGAIN MAY HAVE STORMS APPROACH SEVERE LIMITS. BULK SHEAR IS NOT TOO HIGH HOWEVER AT 25 KTS. SLIGHTLY MORE DRIER AIR BEHIND FRONT TUESDAY NIGHT AND WEDNESDAY...SO TEMPORARILY ENDED POPS EXCEPT OVER EXTREME SOUTHERN SECTIONS. GFS AND ECMWF MODELS COMING INTO AGREEMENT IN DEVELOPING A CUT OFF UPPER LOW OVER THE NORTHERN ROCKIES/HIGH PLAINS EARLY THIS WEEK....RETROGRADING IT WEST OVER COLORADO ON WEDNESDAY...THEN MOVING IT EAST ACROSS THE TX/OK PANHANDLE AND OKLAHOMA FRIDAY (ECMWF IS A LITTLE FARTHER NORTH ACROSS OK AND KANSAS). BROUGHT IN MENTION OF SLIGHT CHANCE OF THUNDERSTORMS ON FRIDAY AS THE UPPER TROUGH/LOW LIFTS EAST OF THE REGION. KEPT POPS IN SLIGHT CHANCE CATEGORY DUE TO UNCERTAINTY IN THE SLOWLY EVOLVING SYSTEM. UPPER RIDGE OTHERWISE BUILDS OVER THE WEEKEND...ENDING RAIN CHANCES. && .PRELIMINARY POINT TEMPS/POPS... ABILENE 89 68 89 58 74 / 30 10 20 40 20 SAN ANGELO 90 68 92 59 74 / 30 10 10 30 20 JUNCTION 91 70 93 67 78 / 30 10 10 40 30 && .SJT WATCHES/WARNINGS/ADVISORIES... NONE. && 26/04
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 220 PM CDT SUN SEP 20 2009 TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139- 140-154-155-168>170-211930- FISHER-NOLAN-STERLING-COKE-RUNNELS-IRION-TOM GREEN-CONCHO- CROCKETT-SCHLEICHER-SUTTON-HASKELL-THROCKMORTON-JONES-SHACKELFORD- TAYLOR-CALLAHAN-COLEMAN-BROWN-MCCULLOCH-SAN SABA-MENARD-KIMBLE- MASON- 220 PM CDT SUN SEP 20 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP THIS AFTERNOON MAINLY WEST OF A LINE FROM ABILENE TO JUNCTION. THE MAIN HAZARDS FROM THESE THUNDERSTORMS WILL BE HAIL...GUSTY WINDS NEAR 50 MPH...AND DEADLY CLOUD TO GROUND LIGHTNING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A COLD FRONT WILL MOVE SOUTH THROUGH THE AREA MONDAY NIGHT. THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG THE FRONT AS IT MOVES THROUGH. SOME OF THESE THUNDERSTORMS COULD BE SEVERE WITH THE MAIN HAZARDS BEING LARGE HAIL AND DAMAGING WINDS. IN ADDITION...ANY THUNDERSTORMS THAT DEVELOP WILL BE CAPABLE OF DEADLY CLOUD TO GROUND LIGHTNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MIGHT BE NEEDED MONDAY EVENING ACROSS THE BIG COUNTRY.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 235 PM CDT SUN SEP 20 2009 TXZ071-076-202015- IRION TX-CROCKETT TX- 235 PM CDT SUN SEP 20 2009 ...SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 315 PM CDT FOR IRION AND CROCKETT COUNTIES... AT 233 PM CDT...A LINE OF STRONG THUNDERSTORMS WAS INDICATED BY NATIONAL WEATHER SERVICE DOPPLER RADAR ALONG A LINE EXTENDING FROM 44 MILES NORTHWEST OF OZONA TO 49 MILES WEST OF OZONA...MOVING EAST AT 15 MPH. THE STRONG THUNDERSTORMS WILL REMAIN OVER MAINLY RURAL AREAS OF... NORTHWESTERN CROCKETT AND SOUTHWESTERN IRION COUNTIES. SMALL HAIL AND WIND GUSTS TO 50 MPH ARE LIKELY WITH THIS LINE OF STORMS. HEAVY RAINFALL WILL CAUSE PONDING OF WATER ON AREA ROADWAYS...ESPECIALLY THOSE IN POOR DRAINAGE AREAS. RESIDENTS ARE ENCOURAGED TO MONITOR THE SITUATION CLOSELY AND BE PREPARED TO TAKE THE PROPER ACTIONS SHOULD A WARNING BE ISSUED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 339 PM CDT SUN SEP 20 2009 TXZ049-054-202130- NOLAN TX-FISHER TX- 339 PM CDT SUN SEP 20 2009 ...SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 430 PM CDT FOR NOLAN AND FISHER COUNTIES... AT 334 PM CDT...A STRONG THUNDERSTORM WAS INDICATED BY NATIONAL WEATHER SERVICE DOPPLER RADAR...ABOUT 9 MILES WEST OF ROSCOE...MOVING EAST AT 25 MPH. * THE STRONG THUNDERSTORM WILL LIKELY IMPACT COMMUNITIES ALONG INTERSTATE 20 SUCH AS ROSCOE AND SWEETWATER. ADDITIONAL STRONG THUNERSTORMS WILL CONTINUE TO DEVELOP THIS AFTERNOON ACROSS THE BIG COUNTRY MAINLY ALONG AND WEST OF A LINE FROM ANSON TO ABILENE. SMALL HAIL AND WIND GUSTS TO 50 MPH ARE LIKELY WITH THIS STORM. HEAVY RAINFALL WILL CAUSE PONDING OF WATER ON AREA ROADWAYS...ESPECIALLY THOSE IN POOR DRAINAGE AREAS. RESIDENTS ARE ENCOURAGED TO MONITOR THE SITUATION CLOSELY AND BE PREPARED TO TAKE THE PROPER ACTIONS SHOULD A WARNING BE ISSUED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 353 PM CDT SUN SEP 20 2009 TXZ071-076>078-202145- IRION TX-SCHLEICHER TX-CROCKETT TX-SUTTON TX- 353 PM CDT SUN SEP 20 2009 ...SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 445 PM CDT FOR IRION... SCHLEICHER...CROCKETT AND SUTTON COUNTIES... AT 351 PM CDT...AN AREA OF STRONG THUNDERSTORMS WAS INDICATED BY NATIONAL WEATHER SERVICE DOPPLER RADAR ALONG A LINE EXTENDING FROM 16 MILES NORTH OF OZONA TO 36 MILES WEST OF OZONA...MOVING SOUTHEAST AT 25 MPH. * STRONG THUNDERSTORMS WILL AFFECT OZONA...CROCKETT COUNTY...AND NORTHWEST SCHLEICHER COUNTY THROUGH 5 PM. SMALL HAIL AND WIND GUSTS TO 50 MPH ARE LIKELY WITH THIS STORM. HEAVY RAINFALL WILL CAUSE PONDING OF WATER ON AREA ROADWAYS...ESPECIALLY THOSE IN POOR DRAINAGE AREAS. RESIDENTS ARE ENCOURAGED TO MONITOR THE SITUATION CLOSELY AND BE PREPARED TO TAKE THE PROPER ACTIONS SHOULD A WARNING BE ISSUED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 516 PM CDT SUN SEP 20 2009 TXZ054-065-066-127-202315- NOLAN TX-TAYLOR TX-COKE TX-RUNNELS TX- 516 PM CDT SUN SEP 20 2009 ...SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 615 PM CDT FOR NOLAN... TAYLOR...COKE AND RUNNELS COUNTIES... AT 514 PM CDT...A STRONG THUNDERSTORM WAS INDICATED BY NATIONAL WEATHER SERVICE DOPPLER RADAR 2 MILES EAST OF MARYNEAL...OR ABOUT 11 MILES NORTHWEST OF BLACKWELL...MOVING EAST AT 20 MPH. * THE STRONG THUNDERSTORM WILL BE NEAR... THE INTERSECTION OF HIGHWAY 70 AND RANCH ROAD 53 BY 530 PM CDT NOLAN BY 550 PM CDT HYLTON BY 555 PM CDT HAPPY VALLEY BY 610 PM CDT PEA SIZE HAIL AND WIND GUSTS TO 50 MPH ARE LIKELY WITH THIS STORM. HEAVY RAINFALL WILL CAUSE PONDING OF WATER ON AREA ROADWAYS... ESPECIALLY THOSE IN POOR DRAINAGE AREAS. RESIDENTS ARE ENCOURAGED TO MONITOR THE SITUATION CLOSELY AND BE PREPARED TO TAKE THE PROPER ACTIONS SHOULD A WARNING BE ISSUED.
The San Angelo radar (KSJT), 58 km away, was scanning. The volume nearest the first event began at 22:33 UTC.
3 hail, 2 thunderstorm wind. Local standard time, as filed.
A Sheriff's Deputy reported a roof was taken off of a storage building and a utility pole was snapped in half on the east side of Eldorado.
Several powerlines and trees were reported down in Winters.
Nickel size hail was reported by amateur radio operators just south of the Brownwood Airport.
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, September 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: 196966, 196967, 196964, 196965, 196968.