A strong upper low moving across the area with a strong dryline sparked isolated severe thunderstorms across portions of the area. An isolated supercell developed near the triple point low in Haskell County that produced a weak tornado near Rule.
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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.
A strong upper low moving across the area with a strong dryline sparked isolated severe thunderstorms across portions of the area. An isolated supercell developed near the triple point low in Haskell County that produced a weak tornado near Rule. This storm continued to the northeast and later produced the large tornado near Seymour. Other severe thunderstorms that developed along the fast moving dryline in the Heartland produced large hail.
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 Apr 13, 11:34 AM CST, 1 hour 11 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE SAN ANGELO TX 1234 PM CDT FRI APR 13 2007 .AVIATION... SCATTERED TO BROKEN COVERAGE OF THUNDERSTORMS IS EXPECTED ACROSS THE NORTHERN HALF OF WEST CENTRAL TEXAS THIS AFTERNOON. STORM COVERAGE ACROSS THE SOUTHERN HALF OF THE AREA WILL BE MORE ISOLATED. WITH THE STRENGTH OF THE APPROACHING UPPER LEVEL LOW AND DRYLINE ADVANCING EASTWARD INTO WEST CENTRAL TEXAS...SOME OF THE STORMS COULD BE SEVERE. GUSTY SOUTH WINDS WILL OCCUR AHEAD OF THE DRYLINE. GUSTY WEST WINDS WILL FOLLOW PASSAGE OF THE DRYLINE LATER THIS AFTERNOON AND EVENING. GUSTY NORTHWEST WINDS WILL FOLLOW PASSAGE OF A COLD FRONT TONIGHT. IN THE POST-FRONTAL AIRMASS...LOW CLOUDS WITH CEILINGS OF 3000-3500 FT WILL LIKELY MOVE DOWN INTO THE BIG COUNTRY AND NORTHERN CONCHO VALLEY LATE TONIGHT INTO SATURDAY MORNING. && .PREV DISCUSSION... /ISSUED 1018 AM CDT FRI APR 13 2007/ UPDATE... WE ARE MONITORING TRENDS THIS MORNING...AND IT APPEARS THAT THE DRYLINE WILL BE SLOWER TO ADVANCE EAST ACROSS OUR AREA THAN THE MODELS INDICATED. THE DRYLINE IS NOW STARTING MIX EASTWARD ACROSS FAR WEST TX. SHOULD START TO ACCELERATE AND REACH OUR WESTERN COUNTIES NOON-1 PM...AND ADVANCE INTO OUR EASTERN COUNTIES BY 4 PM. DEEP MOISTURE HAS SURGED NORTHWARD AHEAD OF THE DRYLINE AND DEWPOINTS HAVE CLIMBED INTO THE LOWER TO MID 60S ACROSS WEST CENTRAL TEXAS. ALSO WATCHING FOR WHERE THE SURFACE LOW...CURRENTLY JUST SOUTHWEST OF LUBBOCK...WILL TRACK THIS AFERNOON. GIVEN THE AMOUNT OF ELEVATED CONVECTION IN OKLAHOMA AND THE COLDER AIR NORTH OF THE BOUNDARY...WILL BE WATCHING TO SEE IF THE BOUNDARY SAGS A BIT SOUTH INTO NORTH TX THIS AFTERNOON. SURFACE LOW SHOULD TRACK EAST ALONG THIS BOUNDARY...AND LOW-LEVEL HELICITY WILL BE ENHANCED WHERE THIS OCCURS. THIS MAY BE NEAR OR JUST NORTH OF HASKELL/THROCKMORTON COUNTIES. WITH THE SURFACE HEATING/DESTABILIZATION AND THE ARRIVAL OF THE MID/UPPER LEVEL FORCING ALONG WITH THE VERTICAL SHEAR...IT NOW APPEARS THAT THE SEVERE WEATHER THREAT IS INCREASED ACROSS OUR REGION THIS AFTERNOON (ESPECIALLY ACROSS EASTERN HALF OF WEST CENTRAL TEXAS). WE HAVE UPDATED THE FORECAST TO INCREASE POPS AND MENTION SEVERE WORDING. PREV DISCUSSION... /ISSUED 713 AM CDT FRI APR 13 2007/ AVIATION... SEVERE THUNDERSTORM WATCH 132 WAS ALLOWED TO EXPIRE AT 7 AM. COULD STILL SEE THUNDERSTORMS DEVELOP THROUGH 17Z MAINLY ALONG AND NORTH OF I20. THEN AFTER 17Z...ISOLATED TO SCATTERED SEVERE TSTORMS COULD DEVELOP ALONG AND EAST OF THE DRY LINE FROM ABI TO SAN ANGELO TO SONORA. WILL LIKELY CONTINUE WITH MVFR CIGS...STRONG GUSTY WINDS...HEAVY RAIN LOWERING VISIBILITIES TO NEAR IFR IN THE VICINITY OF TSTORMS THROUGH TODAY. MAIN SEVERE THREAT WILL BE LARGE HAIL AND DAMAGING WINDS. EXPECT IMPROVEMENT TO VFR AFTER 03Z. PREV DISCUSSION... /ISSUED 316 AM CDT FRI APR 13 2007/ SHORT TERM... CENTER OF UPPER LEVEL LOW PRESSURE SYSTEM IS OVER SOUTHERN ARIZONA THIS MORNING AND WILL RAPIDLY KICK NORTHEAST ACROSS CENTRAL NEW MEXICO AND WILL BE OVER THE NORTHERN TEXAS PANHANDLE BY THIS EVENING. SURFACE CONVERGENCE IS NOTED ALONG A DISCRETE DRYLINE THAT EXTENDS FROM THE BIG BEND AREA INTO SOUTHEASTERN NEW MEXICO THIS MORNING WITH ONGOING CONVECTIVE ACTIVITY GENERATED ON THE NOSE OF A LLJ OVER THE NORTHERN PERMIAN BASIN AND INTO THE SOUTHERN TEXAS PANHANDLE. SEVERE THUNDERSTORM WARNING CONTINUES THROUGH 7 AM FOR THE BIG COUNTRY AND THE CONCHO VALLEY AS FURTHER DEVELOPMENT REMAINS POSSIBLE OVER THE PERMIAN BASIN. RAINFALL CHANCES WILL END IN THE SOUTHWESTERN CWA THIS MORNING WITH THE BEST CHANCES REMAINING OVER THE NORTHERN AND EASTERN COUNTIES THROUGH THE REMAINDER OF THE MORNING. A COLD FRONT WILL PUSH THROUGH THE AREA THIS AFTERNOON...HAVE POSTED A LAKE WIND ADVISORY FOR THE CONCHO VALLEY AND SOUTHERN BIG COUNTRY FOR THIS AFTERNOON IN THE WAKE OF THE COLD FRONT. RED FLAG WARNING IS ALSO POSTED FOR THIS AFTERNOON ALONG OUR WESTERN TIER OF COUNTIES. LONG TERM... UPPER RIDGING WILL BUILD IN BEHIND THE DEPARTING UPPER LOW PRESSURE SYSTEM AND WILL DOMINATE OUR WEATHER PICTURE INTO THE FIRST OF THE WEEK. ANOTHER LOW PRESSURE SYSTEM WILL DIG IN BEHIND THE UPPER RIDGE WITH ITS PROJECTED TRACK FURTHER NORTH THAN THE CURRENT SYSTEM. IF THIS HOLDS...BEST DYNAMICS FOR ASSOCIATED RAINFALL SHOULD REMAIN TO THE NORTH OF THE AREA AS THE SYSTEM PUSHES ANOTHER COLD FRONT THROUGH THE AREA ON TUESDAY. HAVE ELECTED TO DROP THE MENTION OF RAINFALL ASSOCIATED WITH THIS NEXT SYSTEM. UPPER LEVEL HIGH PRESSURE WILL DOMINATE THE AREA THROUGH THE REMAINDER OF THE EXTENDED WITH NO RAINFALL AND TEMPERATURES AT SEASONAL NORMS WITH HIGHS IN THE LOWER 80S AND LOWS IN THE MID 50S. && .PRELIMINARY POINT TEMPS/POPS... ABILENE 79 41 59 38 / 40 10 0 0 SAN ANGELO 79 40 66 37 / 30 10 0 0 JUNCTION 82 45 66 36 / 30 20 0 0 && .SJT WATCHES/WARNINGS/ADVISORIES... LAKE WIND ADVISORY UNTIL 8 PM CDT THIS EVENING FOR COKE-CONCHO- NOLAN-RUNNELS-TAYLOR-TOM GREEN. RED FLAG WARNING UNTIL 8 PM CDT THIS EVENING FOR COKE-CROCKETT- FISHER-IRION-NOLAN-STERLING-TOM GREEN. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 1048 AM CDT FRI APR 13 2007 TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139- 140-154-155-168>170-141600- 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- 1048 AM CDT FRI APR 13 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT THE BEST CHANCE FOR SEVERE THUNDERSTORMS APPEARS TO BE ALONG AND EAST OF A LINE FROM SWEETWATER TO SAN ANGELO. THE MAIN SEVERE WEATHER HAZARDS EXPECTED INCLUDE LARGE HAIL...DAMAGING WINDS OF 60 MPH OR GREATER...AND TORNADOES. THE SEVERE WEATHER THREAT IS EXPECTED TO BEGIN FROM SWEETWATER TO SAN ANGELO DURING THE EARLY AFTERNOON HOURS AND THEN PROGRESS TO THE EAST THROUGHOUT THE DAY TODAY...MOVING INTO THE HEARTLAND DURING THE LATE AFTERNOON. A RED FLAG WARNING IS IN EFFECT FROM 1 PM THROUGH 8 PM THIS AFTERNOON FOR AREAS ALONG AND WEST OF A LINE FROM OZONA... TO SAN ANGELO...TO ROBY. WEST WINDS OF 18 MPH OR GREATER AT 20 FEET WILL COMBINE WITH RELATIVE HUMIDITY VALUES OF 20 PERCENT OR LESS TO CREATE HAZARDOUS FIRE WEATHER CONDITIONS. FIRES WILL HAVE THE POTENTIAL TO GROW RAPIDLY AND SPREAD QUICKLY UNDER THESE CONDITIONS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY COLD TEMPERATURES NEAR 35 ARE POSSIBLE BY SUNDAY MORNING. A FEW AREAS OF SCATTERED FROST ARE POSSIBLE BY SUNDAY MORNING OVER MUCH OF WEST CENTRAL TEXAS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED EARLY THIS AFTERNOON.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 1214 PM CDT FRI APR 13 2007 TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139- 140-154-155-168>170-131915- 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- INCLUDING THE CITIES OF...ROTAN...ROBY...SWEETWATER... STERLING CITY...ROBERT LEE...BRONTE...BALLINGER...WINTERS... MERTZON...SAN ANGELO...EDEN...OZONA...ELDORADO...SONORA... HASKELL...THROCKMORTON...WOODSON...STAMFORD...ANSON...HAMLIN... ALBANY...ABILENE...CLYDE...BAIRD...CROSS PLAINS...COLEMAN... BROWNWOOD...BRADY...SAN SABA...MENARD...JUNCTION...MASON 1214 PM CDT FRI APR 13 2007 ...ISOLATED SEVERE THUNDERSTORMS POSSIBLE BY 1 PM CDT... AT 1200 PM CDT...SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPED FROM ASPERMONT TO COLORADO CITY ALONG THE DRY LINE. AS THESE STORMS MOVE EAST THEY COULD QUICKLY BECOME SEVERE AND PRODUCE LARGE HAIL AND DAMAGING WINDS. THESE STORMS COULD IMPACT AN AREA ALONG AND WEST OF A LINE FROM HASKELL TO ROBY TO SWEETWATER AND STERLING CITY BY 1 PM. BE PREPARED FOR POSSIBLE WARNINGS.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 1257 PM CDT FRI APR 13 2007 TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139- 140-154-155-168>170-132000- 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- INCLUDING THE CITIES OF...ROTAN...ROBY...SWEETWATER... STERLING CITY...ROBERT LEE...BRONTE...BALLINGER...WINTERS... MERTZON...SAN ANGELO...EDEN...OZONA...ELDORADO...SONORA... HASKELL...THROCKMORTON...WOODSON...STAMFORD...ANSON...HAMLIN... ALBANY...ABILENE...CLYDE...BAIRD...CROSS PLAINS...COLEMAN... BROWNWOOD...BRADY...SAN SABA...MENARD...JUNCTION...MASON 1257 PM CDT FRI APR 13 2007 ...TORNADO WATCH IS IN EFFECT ALONG A LINE FROM STERLING CITY TO BROWNWOOD THROUGH 7 PM... AT 1255 PM CDT...A BROKEN LINE OF SCATTERED SHOWERS AND THUNDERSTORMS CONTINUE TO INTENSIFY FROM ASPERMONT TO ROBY TO JUST WEST OF STERLING CITY ALONG THE DRY LINE. AS THESE STORMS MOVE EAST AT 35 MPH...THEY COULD QUICKLY BECOME SEVERE AND PRODUCE LARGE HAIL AND DAMAGING WINDS. THESE STORMS COULD IMPACT AN AREA ALONG AND WEST OF A LINE FROM HASKELL TO SWEETWATER AND STERLING CITY BY 2 PM. BE PREPARED FOR POSSIBLE WARNINGS.
The Dyess AFB radar (KDYX), 95 km away, was scanning. The volume nearest the first event began at 18:45 UTC.
2 hail, 1 tornado. Local standard time, as filed.
Eyewitness reported a tornado briefly skipping across Highway 6 near Rule. No damage was noted.
Golfball size hail reported through the media.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2007Every state in 2007This day in weather historyThe tornado archive for Texas, 2007Warnings in Texas, April 2007
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: 15726, 15723, 15725.