909  
FNUS74 KSJT 202119  
FWSSJT  
 
SPOT FORECAST FOR SHACKELFORD 14:26...TEXAS A&M FOREST SERVICE  
NATIONAL WEATHER SERVICE SAN ANGELO TX  
319 PM CST WED NOV 20 2019  
 
FORECAST IS BASED ON FORECAST START TIME OF 1600 CST ON NOVEMBER 20.  
PLEASE CONTACT OUR OFFICE AT 325-944-3030 IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
GUSTY SOUTH WINDS WILL CONTINUE THROUGH EARLY THIS EVENING. SUSTAINED  
WINDS ARE EXPECTED TO BE AROUND 20 MPH, WITH GUSTS TO 30 MPH. SCATTERED  
SHOWERS AND THUNDERSTORMS ARE MOVING OUT OF THE AREA AT 315 PM, BUT  
ARE EXPECTED AGAIN BETWEEN 530 PM AND 10 PM WITH HIT AND MISS COVERAGE.  
WINDS MAY BE GUSTY AND ERRATIC NEAR THUNDERSTORMS. BRIEF MODERATE TO  
HEAVY RAIN MAY ACCOMPANY THE STORMS. RELATIVE HUMIDITY VALUES ARE  
50-60 PERCENT ACROSS THE AREA AT 3 PM, AND MAY DROP TO 40-50 PERCENT  
PRIOR TO 6 PM. SOUTH WINDS WILL CONTINUE TONIGHT AND MAY BE GUSTY AT  
TIMES, BUT THE OVERALL SPEEDS WILL BE LOWER THAN WHAT IS OCCURRING  
THIS AFTERNOON. RELATIVE HUMIDITY VALUES WILL CLIMB TO 90 PERCENT OR  
HIGHER DURING THE NIGHT.  
 
   
REST OF TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (65-75 PERCENT). SHOWERS AND  
THUNDERSTORMS LIKELY.  
LAL.................16-25 STRIKES.  
MAX TEMPERATURE.....AROUND 74.  
MIN HUMIDITY........62 PERCENT.  
WIND (20 FT)........SOUTH WINDS AROUND 12 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS.  
HAINES INDEX........3 VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
 
TIME (CST) 4 PM  
SKY (%).............63  
WEATHER COV.........LIKELY  
WEATHER TYPE........RNSHWR  
TSTM COV............LIKELY  
LAL.................4  
TEMP................74  
RH..................62  
20 FT WIND DIR......S  
20 FT WIND SPD......12  
20 FT WIND GUST.....18  
HAINES INDEX........3  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) THEN BECOMING  
PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (60-70 PERCENT). CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE EVENING.  
LAL.................9-15 STRIKES UNTIL 2400, THEN NO TSTMS.  
MIN TEMPERATURE.....AROUND 58.  
MAX HUMIDITY........100 PERCENT.  
WIND (20 FT)........SOUTH WINDS 6 TO 13 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS IN THE  
EVENING.  
HAINES INDEX........3 TO 5 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH TO MODERATE POTENTIAL FOR  
LARGE PLUME DOMINATED FIRE GROWTH.  
 
TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).............80 64 56 50 69 74  
WEATHER COV.........CHANCE CHANCE CHANCE  
WEATHER TYPE........RNSHWR RNSHWR RNSHWR NONE NONE NONE  
TSTM COV............CHANCE CHANCE CHANCE  
LAL.................3 3 3 1 1 1  
TEMP................69 63 63 62 62 61  
RH..................73 90 93 97 97 100  
20 FT WIND DIR......S S S S S S  
20 FT WIND SPD......16 13 13 10 9 7  
20 FT WIND GUST.....22 20 20 17 12 10  
HAINES INDEX........3 3 5 3 3 3  
   
THURSDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE MORNING, THEN  
SHOWERS AND THUNDERSTORMS LIKELY IN THE  
AFTERNOON.  
LAL.................9-15 STRIKES UNTIL 1200, THEN 16-25 STRIKES.  
MAX TEMPERATURE.....AROUND 65.  
MIN HUMIDITY........81 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 6 TO 10 MPH SHIFTING TO THE  
NORTHEAST 9 TO 10 MPH LATE IN THE MORNING.  
GUSTY AND ERRATIC WINDS EXPECTED NEAR  
THUNDERSTORMS.  
HAINES INDEX........3 VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
 
TIME (CST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).............71 85 90 93 86 85  
WEATHER COV.........CHANCE CHANCE CHANCE LIKELY LIKELY LIKELY  
WEATHER TYPE........RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV............CHANCE CHANCE CHANCE LIKELY LIKELY LIKELY  
LAL.................3 3 3 4 4 4  
TEMP................59 58 64 65 63 62  
RH..................100 100 93 87 87 81  
20 FT WIND DIR......S S SE N N N  
20 FT WIND SPD......6 9 10 10 10 9  
20 FT WIND GUST.....8 12 17 17 14 12  
HAINES INDEX........3 3 3 3 3 3  
 

 
FORECASTER...GROH  
REQUESTED BY...KASIE WAGENFEHR  
TYPE OF REQUEST...WILDFIRE  
.TAG 1919151.0/SJT  
.DELDT 11/20/19  
 
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