A thunderstorm produced an isolated downburst near Moran.
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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 thunderstorm produced an isolated downburst near Moran.
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 Aug 18, 5:47 PM CST, 13 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN ANGELO TX 647 PM CDT SAT AUG 18 2012 .DISCUSSION... LOOK FOR VFR CONDITIONS TO CONTINUE ACROSS WEST CENTRAL TEXAS FOR THE NEXT 24 HOURS. SEE AVIATION BELOW FOR DETAILS. && .AVIATION... THE POTENTIAL FOR SHOWERS AND THUNDERSTORMS WILL CONTINUE THIS EVENING ACROSS WEST CENTRAL TEXAS...MAINLY ALONG AND NEAR A WEAK COLD FRONT WHICH IS SLOWLY MOVING SOUTH ACROSS THE BIG COUNTRY. WITH THE POTENTIAL FOR GUSTY WINDS ALONG OR AHEAD OF THE SURFACE BOUNDARY... WE HAVE ISSUED AN AIRPORT WEATHER WARNING FOR THE ABILENE AIRPORT THROUGH 830 PM CDT THIS EVENING FOR NORTH WINDS FROM 35 T0 45 KNOTS. FARTHER SOUTH...I DECIDED TO CONTINUE TEMPO GROUPS FOR THUNDERSTORMS UNTIL 04Z THIS EVENING. TOMORROW AFTERNOON...THUNDERSTORMS ARE AGAIN POSSIBLE ACROSS WEST CENTRAL TEXAS. THUS...I INCLUDED PROB30 GROUPS IN ALL FIVE TERMINALS BEGINNING AT 18Z AND CONTINUING THROUGH 24Z. OTHERWISE...EXPECT MAINLY HIGH CLOUDS AND LIGHT SURFACE WINDS AROUND 10 KNOTS OR LESS FOR THE NEXT 24 HOURS. HUBER && .PREV DISCUSSION... /ISSUED 335 PM CDT SAT AUG 18 2012/ SHORT TERM... SYNOPTICALLY...BROAD UPPER LOW CENTERED NORTH OF THE GREAT LAKES DOMINATES THE EASTERN TWO THIRDS OF THE NATION WHILE AN UPPER LEVEL RIDGE IS SITUATED OVER THE WESTERN TIER OF STATES. A STATIONARY FRONTAL BOUNDARY IS DRAPED ALONG THE RED RIVER EARLY THIS AFTERNOON AND DISTURBANCES IN THE NORTHWEST FLOW ALOFT ARE CONTRIBUTING TO ONGOING THUNDERSTORMS OVER OKLAHOMA SOUTHEAST INTO THE ARKLATEX. WILL CONTINUE A CHANCE OF SHOWERS AND THUNDERSTORMS OVER THE FORECAST AREA FOR TONIGHT WITH THE BEST CHANCE BEGINNING LATER THIS AFTERNOON OVER THE NORTHERN COUNTIES CLOSER TO THE STATIONARY FRONT...OUTFLOW BOUNDARIES FROM ONGOING CONVECTIVE ACTIVITY AND DURING TIME OF MAX HEATING. TOMORROW...A COLD FRONT WILL BEGIN TO PUSH SOUTHWARD...ENTERING THE NORTHERN BIG COUNTRY EARLY TOMORROW AFTERNOON. AS THE COLD FRONT MOVES SOUTH THROUGH THE AFTERNOON AND EVENTUALLY STALLS ALONG THE INTERSTATE 10 CORRIDOR TOMORROW EVENING...THE BEST CHANCE OF THUNDERSTORMS WILL BE ASSOCIATED WITH THIS BOUNDARY AS IT MOVES SOUTH. GIVEN EXPECTED COPIOUS CLOUD COVER AND THE CHANCE OF RAINFALL...HAVE KEPT AFTERNOON HIGHS IN THE UPPER 80S TO AROUND 90. 15 LONG TERM... THE AFOREMENTIONED COLD FRONT WILL BRING DRIER AIR INTO THE CWA AND WILL BRING AN END TO PRECIP CHANCES /FOR NOW/. SKIES ARE EXPECTED TO CLEAR WITH LIGHT NORTHEAST WINDS ACROSS THE CWA. DESPITE RESIDUAL GROUND MOISTURE...DEWPOINTS ARE EXPECTED TO DROP INTO THE 50S AND LOWER 60S. THIS WILL SUPPORT MIN TEMPS IN THE MID 60S ACROSS MUCH OF WEST CENTRAL TX WITH SOME LOWER 60S POSSIBLE IN THE LOW LYING AREAS. I EXPECT MONDAY TO BE A DRY DAY WITH TEMPS WARMING INTO THE LOW/MID 90S. HOWEVER...A POTENT SHORTWAVE TROF IS PROGGED TO DIVE SOUTHEAST INTO THE SOUTHERN PLAINS BY MONDAY EVENING. THIS WILL LIKELY AID IN THE DEVELOPMENT OF AN MCS OVER THE HIGH PLAINS WHICH WILL MOVE SOUTHEAST DURING THE OVERNIGHT HOURS. I ADDED SLIGHT CHANCE POPS FOR THE NORTHERN/WESTERN BIG COUNTRY BUT ALL CONVECTION WILL LIKELY WAIT UNTIL WELL AFTER MIDNIGHT TO ENTER THE CWA. A REINFORCING SURFACE HIGH WILL NOSE INTO NORTH TX EARLY TUESDAY...WITH AN OUTFLOW BOUNDARY FROM THE OVERNIGHT CONVECTION IN THE VICINITY OF I-20. GIVEN THE PRESENCE OF SAID BOUNDARY AND CONTINUED LARGE SCALE ASCENT...SLIGHT CHANCE POPS WERE ADDED FOR THE NORTHERN HALF OF THE CWA FOR TUESDAY. THIS OUTFLOW AND ABUNDANT CLOUD COVER WILL LIKELY KEEP MAX TEMPS AT OR BELOW 90 DEGREES ACROSS THE BIG COUNTRY WITH LOWER 90S EXPECTED ELSEWHERE. THE SUBTROPICAL RIDGE IS PROGGED TO BUILD SLIGHTLY BY MIDWEEK WITH RELATIVELY QUIET NORTHWEST FLOW TUESDAY NIGHT THROUGH WEDNESDAY NIGHT. BY THURSDAY...HOWEVER...A STRONG WAVE WILL MOVE ACROSS THE CENTRAL/NORTHERN ROCKIES...INDUCING LEE CYCLOGENESIS. THE INCREASING SOUTHERLY FLOW WILL PROMOTE RAPID POLEWARD MOISTURE TRANSPORT THURSDAY AND FRIDAY. TEMPS WILL REMAIN NEAR SEASONAL NORMALS ON THURSDAY BUT ARE PROGGED TO FALL A BIT BY FRIDAY AS CLOUD COVER RETURNS AND RAIN CHANCES GO UP. GFS PROGS INDICATE PWAT VALUES OF 2 INCHES IN PLACE BY 06Z FRIDAY WHICH IS A GOOD 2 STANDARD DEVIATIONS ABOVE NORMAL. NCEP ANOMALY PRODUCTS ARE ALSO INDICATING STRONG H85 MOISTURE FLUX ACROSS THE REGION. THE PRIMARY MISSING INGREDIENT IS A LOW LEVEL BOUNDARY. WE WILL HAVE TO KEEP AN EYE ON THIS. NONETHELESS...I INCLUDED LOW POPS AREAWIDE FRIDAY AND FRIDAY NIGHT AS A WEAKNESS DEVELOPS IN THE RIDGE. BOTH THE ECMWF AND GFS DEVELOP A WEAKNESS IN THE RIDGE BY FRIDAY BUT THE GFS IS A BIT MORE AGGRESSIVE IN DEPICTING A WEAK MID LEVEL CYCLONE DEVELOPING OVER THE REGION. THIS MAY WARRANT POPS BEING EXTENDED INTO SATURDAY AND SUNDAY AS THESE DAYS ARE ADDED TO THE FORECAST. JOHNSON && .PRELIMINARY POINT TEMPS/POPS... ABILENE 73 90 63 91 64 / 40 30 10 0 10 SAN ANGELO 73 91 65 93 66 / 40 30 10 0 10 JUNCTION 73 92 67 94 63 / 40 30 20 5 5 && .SJT WATCHES/WARNINGS/ADVISORIES... NONE. && HUBER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 238 PM CDT SAT AUG 18 2012 TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139- 140-154-155-168>170-191945- 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- 238 PM CDT SAT AUG 18 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS WILL CONTINUE ACROSS WEST CENTRAL TEXAS THROUGH TONIGHT. DANGEROUS CLOUD TO GROUND LIGHTNING AND HEAVY RAINFALL WILL BE THE PRIMARY IMPACTS. HOWEVER...A FEW STORMS MAY ALSO APPROACH SEVERE LEVELS THIS AFTERNOON AND EVENING OVER THE BIG COUNTRY...WITH DAMAGING WINDS BEING THE PRIMARY THREAT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SCATTERED THUNDERSTORMS WILL CONTINUE INTO SUNDAY. DANGEROUS LIGHTNING AND BRIEF HEAVY RAINFALL WILL BE THE MAIN THREATS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING OVER THE BIG COUNTRY. 15
The Dyess AFB radar (KDYX), 8 km away, was scanning. The volume nearest the first event began at 00:04 UTC.
1 thunderstorm wind. Local standard time, as filed.
A trained spotter reported broken six inch diameter tree limbs near Moran along State Highway 6.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2012Every state in 2012This day in weather historyWarnings in Texas, August 2012
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: 409835.