An upper level low pressure system dumped a small band of heavy snow across Callahan County.
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The episode as NWS SJT wrote it up.
An upper level low pressure system dumped a small band of heavy snow across Callahan County.
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 Dec 1, 9:46 PM CST, 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN ANGELO TX 946 PM CST TUE DEC 1 2009 .UPDATE... ONLY MADE SOME MINOR TWEAKS TO THE FORECAST FOR TONIGHT. SEE DISCUSSION BELOW. .DISCUSSION... A BAND OF SNOW HAS SET UP ALONG A DEFORMATION ZONE ON THE NORTHWEST SIDE OF THE UPPER LOW THAT IS NOW CENTERED NEAR SAN ANGELO AS OF 930 PM. THIS BAND IS NOW LOCATED OVER LUBBOCK AND SOME LIGHT ACCUMULATION OF UP TO AN INCH HAS BEEN REPORTED TO THE WEST AND SOUTH OF THE CITY. ANOTHER BAND OF PRECIP HAS DEVELOPED FROM NEAR COLEMAN NORTHWEST TO ABILENE AND THEN WEST TO SNYDER. IT IS UNCLEAR WHETHER THIS BAND WILL BE THE EVENTUAL REPLACEMENT TO THE ONE FARTHER WEST AND NORTH. THIS BAND SEEMS TO BE CO-LOCATED WITH THE STRONGEST PV ADVECTION IN THE RUC ANALYSIS AND IS NEARLY STATIONARY. THE 00Z NAM AND 21Z SREF DISSIPATE THE BAND OVER W TX AND THE SOUTH PLAINS...WHILE THE 00Z NAM DOES SHOW SOME HINT OF THE BAND THAT HAS RECENTLY DEVELOPED OVER THE SAN ANGELO CWA. OBS OUT OF ABILENE AND SNYDER INDICATE THAT RAIN IS THE PRIMARY PRECIP TYPE WITH THE BAND OVER WEST CENTRAL TX. HOWEVER...AS THE NIGHT CONTINUES AND TEMPS CONTINUE TO FALL TO AROUND 35 OR JUST BELOW...SNOW WILL LIKELY BEGIN TO MIX IN. THERE MAY BE SOME LIGHT ACCUMULATION ON ELEVATED AND GRASSY SURFACES...HOWEVER...WITH AIR AND GROUND TEMPS REMAINING ABOVE FREEZING THE IMPACT TO TRAVEL WILL BE MINIMAL. FOR THIS REASON WILL NOT ISSUE AN ADVISORY AT THIS POINT. THE PRECIP SHOULD COME TO AN END RATHER QUICKLY ON WEDNESDAY AS THE UPPER LOW PULLS AWAY. LACY && .PRELIMINARY POINT TEMPS/POPS... ABILENE 34 45 29 39 25 / 60 20 0 10 30 SAN ANGELO 34 48 30 39 27 / 20 10 0 10 30 JUNCTION 34 52 32 45 32 / 20 10 10 10 30 && .SJT WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 356 PM CST TUE DEC 1 2009 TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139- 140-154-155-168>170-022200- 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- 356 PM CST TUE DEC 1 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT A MIXTURE OF LIGHT RAIN AND SNOW WILL BE POSSIBLE DURING THE OVERNIGHT HOURS...MAINLY OVER THE CONCHO VALLEY...HEARTLAND AND THE BIG COUNTRY...AS MOISTURE WRAPS AROUND AN UPPER LEVEL STORM SYSTEM. NO OR ONLY LIGHT ACCUMULATION IS EXPECTED. WITH OVERNIGHT LOWS EXPECTED TO REMAIN JUST ABOVE FREEZING... ICING POTENTIAL ON ROADWAYS WILL BE LOW. HOWEVER...A FEW SLICK SPOTS MAY DEVELOP ON BRIDGES AND OVERPASSES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY LIGHT SNOW IS EXPECTED TO DEVELOP ACROSS MUCH OF THE AREA THURSDAY NIGHT INTO FRIDAY AS AN UPPER DISTURBANCE MOVES EAST ACROSS THE AREA. LIGHT SNOW ACCUMULATIONS ARE POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The national radar mosaic for the moment the first event began.
1 heavy snow. Local standard time, as filed.
A snowfall amount of 5.5 inches was reported 12 miles south of Baird. Otherwise, 2 to 3 inches of snow was reported across Callahan County.
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, December 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: 205712.