153  
FNUS74 KSJT 202113  
FWSSJT  
 
SPOT FORECAST FOR MASON 0181...TFS  
NATIONAL WEATHER SERVICE SAN ANGELO TX  
313 PM CST MON JAN 20 2025  
 
FORECAST IS BASED ON FORECAST START TIME OF 1500 CST ON JANUARY 20.  
PLEASE CONTACT OUR OFFICE AT 325-944-3030 IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION  
 
VERY COLD CONDITIONS WILL CONTINUE WITH TEMPERATURES 30 DEGREES  
AT 3 PM, FALLING TO 20 DEGREES 8 AM TUESDAY. AFTERNOON SOUTHEAST  
WINDS 12 MPH SHIFT EAST AND INCREASE TO 12 TO 14 MPH WITH GUSTS TO  
18 MPH THIS EVENING. WIND THEN SHIFT TO THE NORTHEAST LATE  
EVENING AND NORTH BY MORNING, WITH GUSTS TO 20 MPH. MAINLY FLURRIES  
ARE EXPECTED OVERNIGHT, ENDING BY 6 AM. ACCUMULATIONS NOT  
EXPECTED. RH VALUES AROUND 28 PERCENT THIS AFTERNOON WILL SLOWLY  
INCREASE TO MAXIMUMS AROUND 60 PERCENT TUESDAY MORNING. SKIES  
CLEAR LATE TUESDAY MORNING, BUT TEMPERATURES ONLY RISE TO HIGHS  
AROUND 34 DEGREES AT 5 PM.  
 
   
REST OF TODAY  
 
7  
SKY/WEATHER.........CLOUDY (100 PERCENT).  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 30.  
MIN HUMIDITY........25 PERCENT.  
WIND (20 FT)........EAST WINDS AROUND 13 MPH.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
TIME (CST) 3 PM 5 PM  
SKY (%).............23 44  
WEATHER COV.........  
WEATHER TYPE........NONE NONE  
TSTM COV............  
LAL.................1 1  
TEMP................36 37  
RH..................27 28  
20 FT WIND DIR......E E  
20 FT WIND SPD......12 12  
20 FT WIND GUST.....17 18  
HAINES INDEX........3 3  
   
TONIGHT  
 
SKY/WEATHER.........CLOUDY (100 PERCENT). SLIGHT CHANCE OF  
SNOW LATE IN THE EVENING. CHANCE OF SNOW  
OVERNIGHT.  
LAL.................NO TSTMS.  
MIN TEMPERATURE.....AROUND 21.  
MAX HUMIDITY........61 PERCENT.  
WIND (20 FT)........NORTHEAST WINDS 12 TO 14 MPH INCREASING TO  
AROUND 14 MPH OVERNIGHT.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).............55 91 97 98 88 74  
WEATHER COV......... S CHC CHANCE CHANCE CHANCE  
WEATHER TYPE........NONE NONE SNOW SNOW SNOW SNOW  
TSTM COV............  
LAL.................1 1 1 1 1 1  
TEMP................29 27 26 26 25 24  
RH..................28 41 50 58 57 55  
20 FT WIND DIR......E E NE NE NE NE  
20 FT WIND SPD......11 12 13 12 13 14  
20 FT WIND GUST.....17 17 18 18 19 20  
HAINES INDEX........3 3 3 3 3 3  
   
TUESDAY  
 
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 35.  
MIN HUMIDITY........35 PERCENT.  
WIND (20 FT)........NORTH WINDS 5 TO 14 MPH BECOMING LIGHT AND  
VARIABLE.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
TIME (CST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).............64 67 41 13 3 1  
WEATHER COV.........  
WEATHER TYPE........NONE NONE NONE NONE NONE NONE  
TSTM COV............  
LAL.................1 1 1 1 1 1  
TEMP................22 22 27 30 34 35  
RH..................56 61 54 49 38 35  
20 FT WIND DIR......N N N N N N  
20 FT WIND SPD......13 12 12 9 7 5  
20 FT WIND GUST.....20 19 18 14 12 9  
HAINES INDEX........3 3 3 3 3 3  
 
 
FORECASTER...DECKER  
REQUESTED BY...BRIAN BORDEN  
TYPE OF REQUEST...WILDFIRE  
.TAG 2500940.0/SJT  
.DELDT 01/20/25  
.FORMATTERVERSION 2.0.0  
.EMAIL CSDISPATCH@TFS.TAMU.EDU  
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab TX Page
Main Text Page