108  
FNUS74 KFWD 252019  
FWSFWD  
 
SPOT FORECAST FOR TAWAKONI WMA...TPWD  
NATIONAL WEATHER SERVICE FORT WORTH TX  
319 PM CDT MON AUG 25 2014  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON AUGUST 26.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
WINDS ARE EXPECTED TO START OUT THE MORNING OUT OF THE SOUTHEAST  
TUESDAY MORNING...BECOMING EASTERLY BY NOON. BASED ON THE LAT/  
LON GIVEN...IT APPEARS THAT THE PRESCRIBED BURN IS LOCATED EAST  
OF LAKE TAWAKONI...SO THE FIRE/EMBERS SHOULD BE CARRIED TOWARDS  
THE LAKE TOMORROW AFTER 10 AM. EASTERLY WINDS WILL BE MET WITH  
AN INCREASE IN AFTERNOON RELATIVE HUMIDITY VALUES COMPARED TO  
TODAY. TODAY'S MINIMUM AFTERNOON RELATIVE HUMIDITY SHOULD BE  
RIGHT AROUND 30 PERCENT. TUESDAY'S PROJECTED MINIMUM RELATIVE  
HUMIDITY IS EXPECTED TO BE AROUND 40 PERCENT.  
 
THE INCREASE IN HUMIDITY MEANS AN INCREASE IN STORM CHANCES  
DURING THE PEAK HEATING HOURS OF THE DAY TOMORROW AS WELL.  
OVERALL...ISOLATED THUNDERSTORMS ARE EXPECTED ACROSS THE  
REGION...BUT THE CHANCE OF A STORM DIRECTLY IMPACTING THE  
PRESCRIBED BURN LOCATION IS ONLY 20 PERCENT AT THIS TIME.  
FEEL FREE TO CONTACT US IF YOU NOTICE BUILDING CUMULUS CLOUDS  
TOMORROW FOR AN UPDATE ON STORM CHANCES NEAR THE PRESCRIBED  
BURN LOCATION. OTHERWISE...FIRE WEATHER DANGER IS EXPECTED TO  
BE LOW FOR THE PRESCRIBED BURN.  
   
TUESDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE AFTERNOON.  
MAX TEMPERATURE.....AROUND 94.  
MIN HUMIDITY........43 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING EAST 5 TO 7 MPH LATE IN  
THE MORNING. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS IN THE AFTERNOON.  
MIXING HEIGHT.......900-1900 FT AGL INCREASING TO 7100-8700 FT AGL.  
TRANSPORT WINDS.....EAST 5 TO 14 MPH.  
MAX HAINES INDEX....4 (LOW).  
 
TIME (CDT) 10 AM NOON 2 PM 4 PM  
SKY (%).........44 49 51 49  
WEATHER COV..... S CHC S CHC  
WEATHER TYPE....NONE NONE RNSHWR RNSHWR  
TEMP............84 89 92 94  
RH..............67 56 47 43  
20 FT WIND......SE 3 E 4 E 6 E 7  
20 FT WIND GUST.5 5 10 10  
MIX HGT (FT)....1900 4200 6500 8700  
TRANSPORT WIND..SE 5 E 8 E 12 E 14  
HAINES INDEX....3 3 4 4  
   
TUESDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE EVENING.  
MIN TEMPERATURE.....AROUND 75.  
MAX HUMIDITY........84 PERCENT.  
WIND (20 FT)........EAST WINDS 5 TO 7 MPH EARLY IN THE EVENING  
BECOMING LIGHT. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS IN THE EVENING.  
MIXING HEIGHT.......3900-5500 FT AGL DECREASING TO 600-2300 FT AGL  
EARLY IN THE EVENING.  
TRANSPORT WINDS.....SOUTHEAST 5 TO 14 MPH DECREASING TO 2 TO 3 MPH  
AFTER MIDNIGHT.  
MAX HAINES INDEX....4 (LOW).  
 
TIME (CDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........47 44 39 34 34 37  
WEATHER COV.....S CHC S CHC S CHC S CHC  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR NONE NONE  
TEMP............92 86 82 79 77 76  
RH..............44 55 65 72 76 82  
20 FT WIND......E 7 E 6 E 3 E 3 E 3 E 2  
20 FT WIND GUST.10 10 5 5 5 5  
MIX HGT (FT)....5500 2300 600 600 600 600  
TRANSPORT WIND..E 14 SE 12 SE 7 SE 5 SE 3 SE 2  
HAINES INDEX....4 4 4 4 4 4  
 

 
FORECASTER...CAVANAUGH  
REQUESTED BY...DARYL W WATERS  
TYPE OF REQUEST...PRESCRIBED  
.TAG 20140826.TAWAK.01/FWD  
 
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