A small but strong upper level shortwave interacted with freezing temperatures at the surface in the northern Big Country that resulted in freezing rain on Valentines Day.
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The episode as NWS SJT wrote it up.
A small but strong upper level shortwave interacted with freezing temperatures at the surface in the northern Big Country that resulted in freezing rain on Valentines Day.
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 Feb 14, 8:31 AM CST, 43 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN ANGELO TX 831 AM CST SAT FEB 14 2009 .UPDATE... ISENTROPIC LIFT HAS RESULTED IN SCATTERED SHOWERS WITH ISOLATED THUNDERSTORMS ACROSS THE PERMIAN BASIN THIS MORNING. THESE SHOWERS MAY EXPAND EASTWARD...SO HAVE INCRASED POPS ACROSS WESTERN BIG COUNTRY AND ADDED THE MENTION OF ISOLATED SHOWRS AND THUNDERSTORMS...MAINLY ACROSS THE WESTERN BIG COUNTRY...MAINLY THOUGH MID DAY AND EARLY AFTERNOON. && .PREV DISCUSSION... /ISSUED 555 AM CST SAT FEB 14 2009/ AVIATION... /12Z UPDATE/ LOW LEVEL MOISTURE WITH MVFR CIGS SLIDING DOWN FROM OK THIS AM. SHOULD MAKE IT DOWN POSSIBLY AS FAR AS ABI IN THE NEXT COUPLE OF HOURS. THEN SHOULD GET ENOUGH MIXING TO SCATTER OUT CLOUDS. SLIGHTLY HIGHER VFR LOW CLOUD CIGS LITTLE SLOW ACROSS SRN AREAS WITH WEAKER FLOW...WILL BE SLOWER TO MOVE OUT. HIGH CLOUDINESS N EXPECTED TO MAKE A QUICK EXIT OVER THE NEXT FEW HRS TO THE SE. NRLY FLOW BEHIND THE FRONT WILL CONTINUE TODAY...BECOMING LIGHT AND VARIABLE TONIGHT AS GRADIENTS WEAKEN. 11 PREV DISCUSSION... /ISSUED 312 AM CST SAT FEB 14 2009/ DISCUSSION... STILL LOOKING AT A DRY FORECAST FOR WEST CENTRAL TEXAS THROUGH THE NEXT 7 DAYS. COLD AIR ADVECTION IS WELL UNDERWAY IN THE WAKE OF COLD FRONTAL PASSAGE EARLIER IN THE NIGHT. TEMPERATURES WILL BE MUCH COOLER TODAY. AS MOIST AIR OVERRUNS THE COOL AIR AT THE SURFACE...LOW CLOUDS WILL DEVELOP FIRST ACROSS SOUTHERN SECTIONS OF WEST CENTRAL TEXAS EARLY THIS MORNING...THEN EXPAND NORTHWARD ACROSS MUCH OF OUR AREA TODAY. THIS COMBINED WITH 850 MB THERMAL TROUGHING PATTERN WILL CURTAIL SHARPLY THE TEMPERATURE RECOVERY. HAVE UNDERCUT HIGHS FURTHER FOR TODAY AND THIS IS IN LINE WITH THE MET/MAV GUIDANCE. SURFACE RIDGING PATTERN FROM THE UPPER MISSISSIPPI VALLEY INTO TEXAS WILL KEEP A NORTH TO NORTHEAST SURFACE FLOW GOING SUNDAY. WITH MORE SUNSHINE SUNDAY HOWEVER...TEMPERATURES WILL NOT BE AS COOL AS TODAY. SUNDAY INTO NEXT WEEK...EXPECT TO SEE PERIODIC HIGH CLOUDINESS ASSOCIATED WITH SOUTHERN STREAM UPPER LEVEL JET...WHICH WILL EXTEND FROM THE EASTERN PACIFIC ACROSS THE SOUTHERN HALF OF THE US. SOME PATCHY LOW CLOUDS MAY DEVELOP EARLY MONDAY MORNING. THEN RETURN FLOW WILL AID IN MORE WIDESPREAD LOW CLOUD DEVELOPMENT EARLY TUESDAY MORNING. EARLY NEXT WEEK...UPPER LOW AND TROUGH OFF THE CALIFORNIA COAST IS PROGGED TO OPEN UP AND EJECT OUT ACROSS THE CENTRAL ROCKIES ON TUESDAY. WITH THIS SETUP...SURFACE LOW IS PROGGED TO DEVELOP IN THE LEE OF THE COLORADO ROCKIES ON TUESDAY BEFORE MOVING EAST. INDICATIONS ARE FOR A DRY LINE TO MIX EAST INTO WEST CENTRAL TEXAS. COMBINATION OF GUSTY SOUTHWEST WINDS AND DRY AIR INTRUSION BEHIND THE DRY LINE WOULD BRING AN ELEVATED/NEAR CRITICAL FIRE WEATHER THREAT. THE 00Z MODEL RUN IS A LITTLE SLOWER WITH THE ARRIVAL OF THESE FEATURES... SUGGESTING THAT THE DRY LINE WOULD NOT ADVANCE QUITE AS FAR TO THE EAST ACROSS WEST CENTRAL TEXAS DURING THE DAY TUESDAY. FOR THE MIDDLE TO LATE PART OF NEXT WEEK...THE GFS AND ECMWF DIG A SERIES OF UPPER TROUGHS ACROSS THE MIDWEST...GREAT LAKES AND EVENTUALLY INTO THE SOUTHEASTERN US. UPSTREAM RIDGE BUILDS OVER THE INTER MOUNTAIN WEST LATE NEXT WEEK WITH DEVELOPING NORTHWEST FLOW ALOFT INTO TEXAS. THIS SETUP COULD ALLOW A STRONGER COLD FRONT TO DROP SOUTH ACROSS WEST CENTRAL TEXAS THURSDAY MORNING. THE STRONGEST COLD AIR ADVECTION...HOWEVER... WOULD OCCUR NORTHEAST/EAST OF TEXAS. && .PRELIMINARY POINT TEMPS/POPS... ABILENE 48 32 60 39 63 / 10 0 0 0 10 SAN ANGELO 52 32 64 40 63 / 10 0 0 0 10 JUNCTION 55 31 66 41 63 / 10 10 0 0 10 && .SJT WATCHES/WARNINGS/ADVISORIES... NONE. && 28/99
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 645 AM CST SAT FEB 14 2009 TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139- 140-154-155-168>170-142200- 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- 645 AM CST SAT FEB 14 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL TEXAS. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY ELEVATED TO NEAR CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED TO DEVELOP AGAIN TUESDAY AFTERNOON ACROSS WESTERN PORTIONS OF WEST CENTRAL TX AS A STORM SYSTEM MOVES EAST ACROSS THE CENTRAL PLAINS AND A DRY LINE MOVES ACROSS PORTIONS OF WEST CENTRAL TEXAS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. 11/KEISER
The national radar mosaic for the moment the first event began.
1 winter weather. Local standard time, as filed.
Law Enforcement Officials reported ice on bridges that may have caused a vehicle rollover on State Highway 6 halfway between Rule and Rochester.
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, February 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: 155454.