A cold front moved through West Central Texas resulted in the development of a long track isolated supercell thunderstorm. This storm produced large hail and strong damaging winds from Robert Lee to San Saba.
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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 cold front moved through West Central Texas resulted in the development of a long track isolated supercell thunderstorm. This storm produced large hail and strong damaging winds from Robert Lee to San Saba.
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 May 10, 11:23 AM CST, 1 hour 39 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN ANGELO TX 1223 PM CDT FRI MAY 10 2013 .UPDATE... SEE 18Z AVIATION DISCUSSION BELOW. && .AVIATION... VFR CONDITIONS WILL PREVAIL ACROSS MOST TERMINALS FOR MOST OF THE PERIOD. HOWEVER...SCATTERED THUNDERSTORMS WILL TEMPORARILY DROP CIGS AND VSBYS TO AT LEAST MVFR AT SEVERAL SITES. WITH NO REAL PRIMARY FOCUS...STORMS WILL BE SCATTERED AROUND THIS AFTERNOON AND EVENING...AND NO WAY AT THIS POINT TO PIN DOWN THE EXACT TIME AND LOCATIONS. WILL BE MONITORING LATEST RADAR TRENDS. && .PREV DISCUSSION... /ISSUED 644 AM CDT FRI MAY 10 2013/ UPDATE... LOOK FOR CHALLENGING FLIGHT WEATHER CONDITIONS ACROSS WEST CENTRAL TEXAS FOR MUCH OF THE NEXT 18 HOURS. AVIATION BELOW HAS DETAILS. DISCUSSION... A COLD FRONT AND AN UPPER-LEVEL TROUGH WILL COMBINE TO INITIATE THUNDERSTORMS ACROSS MUCH OF WEST CENTRAL TEXAS DURING THE NEXT 12 TO 18 HOURS. SEVERE THUNDERSTORMS ARE POSSIBLE...ESPECIALLY THIS AFTERNOON AND EVENING. THE COLD FRONT WILL PUSH SOUTH ACROSS WEST CENTRAL TEXAS DURING THE NEXT 8 HOURS. THUS...WATCH FOR LIGHT AND VARIABLE WINDS THIS MORNING TO BECOME NORTH TO NORTHEAST DURING THE DAY. ALTHOUGH NAM-BASED GUIDANCE INDICATED MVFR TO IFR CEILINGS POSSIBLE TODAY AT ALL FIVE OF OUR TERMINALS...I BELIEVE THIS IS TOO PESSIMISTIC. THUNDERSTORMS OVERNIGHT LAST NIGHT HAVE MAINTAINED A FAIRLY MIXED BOUNDARY LAYER ACROSS MUCH OF WEST CENTRAL TEXAS. PLUS...SATELLITE IMAGERY INDICATE STRATUS BEHIND THE FRONT IS PATCHY AT BEST. THUS...I DECIDED TO CONTINUE VFR CONDITIONS FOR ALL FIVE TERMINALS FOR THE NEXT 24 HOURS. HUBER AVIATION... PREV DISCUSSION... /ISSUED 254 AM CDT FRI MAY 10 2013/ SHORT TERM... MODELS THIS CYCLE CONTINUE RAIN CHANCES ACROSS WEST CENTRAL TEXAS FOR THE NEXT 24 HOURS. A COLD FRONT WILL PUSH SOUTH ACROSS WEST CENTRAL TEXAS TODAY. MEANWHILE...AN UPPER-LEVEL TROUGH OF LOW PRESSURE WILL CONTINUE TO PROVIDE SUPPORT FOR THUNDERSTORM DEVELOPMENT. THE STORM PREDICTION CENTER HAS OUR SOUTHEASTERN COUNTIES IN A SLIGHT RISK AREA FOR SEVERE THUNDERSTORMS TODAY AND TONIGHT. THIS LOOKS REASONABLE GIVEN THE PROXIMITY OF THE COLD FRONT IN THAT AREA THIS AFTERNOON AND EVENING. PLUS...WITH NUMEROUS OUTFLOW BOUNDARIES AROUND...THERE WILL BE AMPLE SURFACE FORCING OPPORTUNITIES FOR SHOWER AND THUNDERSTORM DEVELOP TODAY AND TONIGHT. THE MAIN THUNDERSTORM THREATS FOR TODAY AND TONIGHT ARE LARGE HAIL AND DAMAGING WINDS. HUBER LONG TERM... THE MAIN HIGHLIGHTS IN THE EXTENDED FORECAST ARE DECREASING RAIN CHANCES FROM LATE SATURDAY THROUGH MONDAY...WITH RAIN CHANCES ONCE AGAIN INCREASING ON TUESDAY. ON SATURDAY AFTERNOON...A POTENT UPPER LEVEL LOW WILL BE CENTERED OVER THE MEXICAN STATE OF SINALOA...WITH LITTLE MOVEMENT EXPECTED THROUGH MONDAY. EARLY SATURDAY...SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE ACROSS MAINLY THE SOUTHERN THIRD OF THE AREA...WITH RAIN CHANCES SLOWLY DECREASING BY LATE IN THE DAY. NORTHEAST WINDS CAN EXPECTED BEHIND A COLD FRONT...WITH BELOW NORMAL TEMPERATURES. HIGHS WILL GENERALLY BE IN THE MID 70S TO NEAR 80...WITH THE COOLEST READINGS ACROSS THE SOUTHERN COUNTIES WHERE MORE CLOUD COVER AND PRECIPITATION ARE FORECAST. FAIRLY DRY CONDITIONS ARE EXPECTED ON BOTH SUNDAY AND MONDAY WITH GENERALLY BELOW NORMAL TEMPERATURES. HIGHS WILL BE IN THE UPPER 70S TO MID 80S...WHILE OVERNIGHT LOWS WILL BE IN THE 50S. THE PREVIOUSLY MENTIONED UPPER LEVEL OVER MEXICO WILL BEGIN TO EJECT NORTHEAST...TOWARD WEST AND WEST CENTRAL TEXAS LATE MONDAY INTO TUESDAY. THIS WILL RESULT IN INCREASING RAIN CHANCES ACROSS ALL OF WEST CENTRAL TEXAS. FOR NOW...I HAVE KEPT SLIGHT CHANCE POPS FROM MONDAY NIGHT THROUGH TUESDAY NIGHT...BUT THESE MAY NEED TO BE BUMPED UP AS WE GET CLOSER TO THE EVENT. WEDNESDAY THROUGH LATE NEXT WEEK...A SLOW WARM UP WILL ENSUE WITH DECREASING RAIN CHANCES. THE 00Z GFS BRINGS A COLD FRONT INTO THE AREA NEXT THURSDAY...BUT I WOULD LIKE TO SEE BETTER MODEL CONSISTENCY BEFORE JUMPING ON THIS SOLUTION. DANIELS && .PRELIMINARY POINT TEMPS/POPS... ABILENE 78 56 80 54 79 / 50 20 10 10 5 SAN ANGELO 80 58 79 53 81 / 50 30 20 10 10 JUNCTION 80 58 77 52 81 / 80 30 20 10 10 && .SJT WATCHES/WARNINGS/ADVISORIES... NONE. && 07
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 1158 AM CDT FRI MAY 10 2013 TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139- 140-154-155-168>170-111700- 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- 1158 AM CDT FRI MAY 10 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS A SLIGHT RISK FOR AREAS ALONG AND SOUTH OF A LINE FROM SNYDER...TO ABILENE...TO BROWNWOOD. WE ANTICIPATE THUNDERSTORMS DEVELOPMENT WILL INCREASE AS DAYTIME HEATING INCREASES. SOME OF THESE STORMS MAY BECOME SEVERE. THE PRIMARY THREATS WITH SEVERE THUNDERSTORMS ARE LARGE HAIL AND DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WE ANTICIPATE SPOTTER ACTIVATION TODAY AND INTO THE EVENING.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
905 AM CDT FRI MAY 10 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0825 PM HAIL 3 N LONDON 30.72N 99.58W
05/09/2013 E2.00 INCH MENARD TX TRAINED SPOTTER
RAINFALL NETWORK OBSERVER REPORTED HEN EGG SIZE HAIL
AND A CAR WINDSHIELD DESTROYED.
&&
EVENT NUMBER SJT1300210
18PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1010 AM CDT FRI MAY 10 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0230 PM HAIL 2 S SWEETWATER 32.44N 100.41W
05/09/2013 E1.75 INCH NOLAN TX CO-OP OBSERVER
GOLF BALL SIZE HAIL WAS REPORTED FROM A RAINFALL
NETWORK OBSERVER.
&&
EVENT NUMBER SJT1300211
18SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
100 PM CDT FRI MAY 10 2013
TXZ064-101830-
STERLING TX-
100 PM CDT FRI MAY 10 2013
...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 130 PM CDT FOR
STERLING COUNTY...
POTENTIAL STORM HAZARDS INCLUDE...
GUSTY WINDS AND SMALL HAIL
AT 1257 PM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER NORTHEASTERN
GLASSCOCK COUNTY...OR ABOUT 16 MILES NORTHEAST OF GARDEN CITY...
MOVING EAST AT 20 MPH.
POTENTIAL STORM IMPACTS INCLUDE...
A FEW WEAK BRANCHES BROKEN...
AN ISOLATED POWER OUTAGE POSSIBLE...
HAZARDOUS DRIVING CONDITIONS...
THE STRONG THUNDERSTORM WILL BE NEAR...
NORTHERN STERLING COUNTY.
LAT...LON 3209 10126 3210 10083 3209 10082 3192 10082
3190 10127 3208 10127
TIME...MOT...LOC 1801Z 266DEG 19KT 3205 10128SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANGELO TX 134 PM CDT FRI MAY 10 2013 TXZ064-065-072-101900- STERLING TX-TOM GREEN TX-COKE TX- 134 PM CDT FRI MAY 10 2013 ...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 200 PM CDT FOR STERLING...TOM GREEN AND COKE COUNTIES... POTENTIAL STORM HAZARDS INCLUDE... GUSTY WINDS AND SMALL HAIL AT 132 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 7 MILES NORTHEAST OF STERLING CITY...MOVING SOUTHEAST AT 40 MPH. POTENTIAL STORM IMPACTS INCLUDE... A FEW WEAK BRANCHES BROKEN... AN ISOLATED POWER OUTAGE POSSIBLE... HAZARDOUS DRIVING CONDITIONS... THE STRONG THUNDERSTORM WILL BE NEAR... BROOME AND THE INTERSECTION OF HIGHWAY 158 AND RANCH ROAD 2059 BY 145 PM CDT US-87 NEAR THE COKE-TOM GREEN COUNTY LINE BY 150 PM CDT WATER VALLEY BY 200 PM CDT LAT...LON 3182 10043 3153 10078 3190 10105 3206 10087 TIME...MOT...LOC 1834Z 312DEG 36KT 3188 10087
The San Angelo radar (KSJT), 60 km away, was scanning. The volume nearest the first event began at 19:02 UTC.
6 hail, 2 thunderstorm wind. Local standard time, as filed.
A trained spotter relayed a report of nickel to quarter size hail along State Highway 158 just west of Lake E.V. Spence.
A six inch diameter tree limb was reported down along U.S. Highway 83 just south of Ballinger.
A trained spotter reported telephone polls down along U.S. Highway 67 just south of Ballinger.
Hail covering the ground was reported in San Saba by the public.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2013Every state in 2013This day in weather historyWarnings in Texas, May 2013
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: 452159, 452160, 452161, 452162, 452165, 452166, 452163, 452164.