852  
FXUS64 KSJT 142338  
AFDSJT  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE SAN ANGELO TX  
538 PM CST THU DEC 14 2017  
   
AVIATION
 
 
/00Z TAFS/  
 
VFR THROUGH THE NEXT 24 HOURS. NORTHEAST WINDS 10 TO 15 KNOTS  
CURRENTLY, WILL DIMINISH TO LESS THAN 10 KNOTS TONIGHT THROUGH  
TOMORROW. 20  
 

 
   
PREV DISCUSSION
 
/ISSUED 227 PM CST THU DEC 14 2017/  
 
SHORT TERM...  
(TONIGHT AND FRIDAY)  
 
COLD FRONT THAT PUSHED ACROSS THE AREA OVERNIGHT HAS BROUGHT  
COOLER CONDITIONS TO WEST CENTRAL TEXAS, WITH TEMPERATURES MAINLY  
IN THE MID AND UPPER 50S. A VEIL OF HIGH CLOUDS WILL CONTINUE TO  
STREAM ACROSS THE I-10 CORRIDOR AND THIS WILL KEEP TEMPERATURES  
FROM COMPLETELY BOTTOMING OUT, BUT ITS STILL GONNA BE A COLD NIGHT  
WITH TEMPERATURES NEAR FREEZING FOR MANY LOCATIONS.  
 
LIGHT COLD ADVECTION WILL CONTINUE INTO FRIDAY, ALTHOUGH WINDS  
WILL BECOME LIGHT AND VARIABLE DURING THE AFTERNOON. LOTS OF  
SUNSHINE STILL, SO TEMPERATURES WILL BE PRETTY CLOSE TO WHERE THEY  
END UP TODAY.  
 
LONG TERM...  
(SATURDAY THROUGH NEXT THURSDAY)  
 
RAIN CHANCES RETURN FOR SOME LOCATIONS....  
 
(SATURDAY NIGHT THROUGH SUNDAY MORNING)  
 
THE PLEASANT WEATHER WILL CONTINUE ACROSS THE AREA THROUGH THE  
WEEKEND AND FOR MUCH OF NEXT WEEK. THERE IS A CHANCE FOR SOME  
AREAS ALONG AND EAST OF A LINE FROM THROCKMORTON TO SONORA TO SEE  
RAIN. AN AREA OF LOW PRESSURE WILL BEGIN TO DEVELOP ALONG THE  
SOUTHERN TEXAS GULF COAST BY FRIDAY AFTERNOON. THIS LOW WILL TRACK  
TO NORTHEAST ALONG THE COAST AND OUR AREA WILL BE ON THE BACK END  
OF THE PRECIPITATION SHIELD. THERE WILL BE A DEFINITIVE LINE  
BETWEEN AREAS SEEING RAIN AND AREAS SEEING CLOUDY SKIES. RAINFALL  
TOTALS WILL BE LIGHT WITH THE BEST CHANCES OF RAN OCCURRING  
SATURDAY EVENING THROUGH SUNDAY MORNING. HIGHS WILL BE COOLER WITH  
THE INCREASED CLOUD COVER. EXPECT HIGHS ON SATURDAY TO BE IN THE  
MID TO UPPER 50S WITH A FEW LOCATIONS SEEING TEMPERATURES  
APPROACHING 60 DEGREES. OVERNIGHT LOWS WILL BE WARM COMPARED TO  
WHAT WE HAVE BEEN SEEING THESE PAST MORNINGS. LOWS ON SATURDAY  
WILL BE IN THE LOW 40S.  
 
(SUNDAY THROUGH NEXT THURSDAY)  
 
THE WEATHER WILL BE QUIET ACROSS THE REGION DURING THIS TIME  
PERIOD. A FEW WEAK FRONTAL SYSTEMS WILL MOVE THROUGH THE AREA AND  
KEEP TEMPERATURES RIGHT AT OR JUST ABOVE SEASONAL NORMALS FOR THIS  
TIME OF YEAR. EXPECT HIGHS IN THE MID 60S UNDER MOSTLY SUNNY  
SKIES DURING THE AFTERNOON. OVERNIGHT LOWS WILL BE IN THE MID TO  
UPPER 30S. BEGINNING ON THURSDAY, THE UPPER LEVEL PATTERN WILL  
CHANGE ACROSS THE U.S., BOTH MODELS SUGGEST A DEEP TROUGH  
DEVELOPING OVER THE INTERMOUNTAIN WEST. THIS WILL HELP THE COLDER  
AIR TO THE NORTH MOVE SOUTH TOWARD TEXAS. BY THURSDAY MORNING A  
DEVELOPING AREA OF LOW PRESSURE WILL BE MOVING SOUTH-SOUTHEAST  
ACROSS THE CENTRAL PLAINS. THIS WILL PUT OUR AREA IN A WARM  
SOUTHEAST FLOW. HIGHS ON THURSDAY WILL BE IN THE UPPER 60S. THIS  
LOW PRESSURE SYSTEM WILL BRING A COLD FRONT TO OUR AREA BY  
THURSDAY NIGHT. BOTH MODELS SHOW A STRONG TEMPERATURE GRADIENT  
ASSOCIATED WITH FRONT. BY THURSDAY NIGHT THE FRONT IS JUST  
BEGINNING TO MOVE INTO NORTHERN TEXAS. WE WILL CONTINUE TO MONITOR  
THIS SYSTEM AS IT HAS THE POTENTIAL TO BRING VERY COLD  
TEMPERATURES TO THE REGION.  
 

 
   
PRELIMINARY POINT TEMPS/POPS
 
 
ABILENE 30 56 36 59 / 0 0 0 10  
SAN ANGELO 31 56 34 57 / 0 0 0 20  
JUNCTION 35 58 34 54 / 10 5 0 30  
BROWNWOOD 33 57 33 58 / 0 0 0 20  
SWEETWATER 32 55 37 58 / 0 0 0 5  
OZONA 34 56 35 52 / 5 0 0 20  
 

 
   
SJT WATCHES/WARNINGS/ADVISORIES
 
 
NONE.  

 
 

 
 
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