472  
FNUS74 KEWX 071143  
FWSEWX  
 
SPOT FORECAST FOR BIG SKY...TEXAS A&M FOREST SERVICE  
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX  
643 AM CDT SUN AUG 7 2022  
 
FORECAST IS BASED ON FORECAST START TIME OF 0700 CDT ON AUGUST 07.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
ELEVATED FIRE WEATHER CONDITIONS ARE POSSIBLE THIS AFTERNOON INTO  
THIS EVENING. SOUTHERLY WINDS OF 5 TO 10 MPH THIS MORNING  
INCREASE TO 10 TO 15 MPH WITH GUSTS TO 25 MPH THIS AFTERNOON, THEN  
BECOME SOUTHEASTERLY THIS EVENING. MINIMUM HUMIDITY LEVELS WILL  
BE AROUND 33 PERCENT THIS AFTERNOON WITH A GOOD RECOVERY TO NEAR  
90 PERCENT BY MONDAY MORNING. THERE ARE SLIGHT CHANCES OF WETTING  
RAINS FROM SHOWERS AND THUNDERSTORMS EARLY THIS EVENING. THERE IS  
A POTENTIAL FOR LIGHTNING OUTSIDE OF RAIN AREAS TO START NEW  
FIRES DUE TO DRY TO EXTREMELY DRY VEGETATION. ALSO, ERRATIC AND  
GUSTY WINDS ARE EXPECTED NEAR SHOWERS AND THUNDERSTORMS.  
   
REST OF TODAY
 
 
SKY/WEATHER.........PARTLY SUNNY (45-55 PERCENT) THEN BECOMING  
MOSTLY SUNNY (25-35 PERCENT).  
CWR.................0 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 93.  
MIN HUMIDITY........33 PERCENT.  
EYE LEVEL WINDS.....SOUTH WINDS 6 TO 8 MPH.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTH WINDS 8 TO 10 MPH.  
MIXING HEIGHT.......7300 FT AGL.  
TRANSPORT WINDS.....SOUTH 16 TO 17 MPH.  
HAINES INDEX........4 TO 5 OR LOW TO MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........56 56 56 48 48 25 30 30 30 37 27  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0 0  
LAL.............1 1 1 1 1 1 1 1 1 1 1  
TEMP............72 73 75 79 82 85 88 91 91 91 93  
RH..............87 87 79 67 56 50 43 38 37 36 33  
20 FT WIND DIR..S S S S S S S S S S S  
20 FT WIND SPD..10 10 13 13 12 12 10 10 10 12 10  
20 FT WIND GUST.20 20 21 22 21 22 22 21 22 21 21  
EYE LVL WND DIR.S S S S S S S S S S S  
EYE LVL WND SPD.6 6 8 8 7 7 6 6 6 7 6  
EYE LVL WND GST.12 12 13 13 13 13 13 13 13 13 13  
MIX HGT (KFT)...1.1 1.5 2.3 2.7 3.5 5.1 5.9 6.3 7.0 7.3 6.8  
TRANSP WIND DIR.S S S S S S S S S S S  
TRANSP WIND SPD.17 17 17 16 16 16 16 16 16 16 17  
HAINES INDEX....4 4 4 4 4 5 5 5 5 5 5  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING.  
CWR.................0 PERCENT.  
LAL.................NO TSTMS.  
MIN TEMPERATURE.....AROUND 72.  
MAX HUMIDITY........90 PERCENT.  
EYE LEVEL WINDS.....SOUTH WINDS UP TO 8 MPH. GUSTS UP TO 21 MPH  
LATE IN THE EVENING.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTH WINDS 7 TO 8 MPH. GUSTS UP TO 21 MPH LATE  
IN THE EVENING. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS EARLY IN THE  
EVENING.  
MIXING HEIGHT.......600 FT AGL.  
TRANSPORT WINDS.....SOUTH 13 TO 18 MPH.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........23 29 23 18 14 13 13 17 19 21 48 48  
WEATHER COV..... SCH SCH SCH  
WEATHER TYPE.... RW RW RW  
TSTM COV........ SCH SCH SCH  
CWR.............0 0 0 0 0 0 0 0 0 0 0 0  
LAL.............1 1 1 1 1 1 1 1 1 1 1 1  
TEMP............92 91 88 85 83 81 81 79 78 76 73 73  
RH..............34 38 43 48 53 63 65 72 74 79 87 87  
20 FT WIND DIR..S SE SE S S S S S S S S S  
20 FT WIND SPD..13 10 10 7 6 8 10 10 10 10 10 10  
20 FT WIND GUST.20 20 21 20 16 20 21 21 20 20 20 20  
EYE LVL WND DIR.S SE SE S S S S S S S S S  
EYE LVL WND SPD.8 6 6 4 4 5 6 6 6 6 6 6  
EYE LVL WND GST.12 12 13 12 10 12 13 13 12 12 12 12  
MIX HGT (KFT)...5.8 5.2 4.1 1.9 0.8 0.8 0.9 0.9 0.8 0.7 0.6 0.6  
TRANSP WIND DIR.S S S S S S S S S S S S  
TRANSP WIND SPD.17 17 17 18 18 18 18 18 17 16 15 13  
HAINES INDEX....5 5 5 5 5 5 5 5 5 5 5 5  
   
MONDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).  
CWR.................0 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 94.  
MIN HUMIDITY........35 PERCENT.  
EYE LEVEL WINDS.....SOUTHEAST WINDS UP TO 6 MPH.  
WIND (20 FT)........  
SLOPE/VALLEY.......SOUTH WINDS 5 TO 8 MPH.  
MIXING HEIGHT.......10200 FT AGL.  
TRANSPORT WINDS.....SOUTH 9 TO 12 MPH.  
HAINES INDEX........4 TO 5 OR LOW TO MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........48 48 48 48 24 7 14 21 23 26 28 28  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CWR.............0 0 0 0 0 0 0 0 0 0 0 0  
LAL.............1 1 1 1 1 1 1 1 1 1 1 1  
TEMP............73 72 73 75 79 83 86 89 91 93 93 93  
RH..............87 90 90 82 69 57 49 44 39 36 35 35  
20 FT WIND DIR..S S S S S S S S S SE SE SE  
20 FT WIND SPD..10 9 8 10 9 7 7 7 7 8 8 8  
20 FT WIND GUST.18 18 17 17 16 15 15 15 16 16 17 17  
EYE LVL WND DIR.S S S S S S S S S SE SE SE  
EYE LVL WND SPD.6 5 5 6 5 4 4 4 4 5 5 5  
EYE LVL WND GST.11 11 10 10 10 9 9 9 10 10 10 10  
MIX HGT (KFT)...0.6 0.6 1.1 2.0 2.5 3.6 5.8 6.9 7.7 9.4 10 8.8  
TRANSP WIND DIR.S S S S S S SE SE SE SE SE SE  
TRANSP WIND SPD.12 10 9 9 9 9 9 9 9 9 9 9  
HAINES INDEX....4 4 4 4 4 4 5 5 5 5 5 5  
 

 
FORECASTER...04  
REQUESTED BY...MELINDA HORN  
TYPE OF REQUEST...WILDFIRE  
.TAG 2216093.5/EWX  
.DELDT 08/07/22  
.FORMATTERVERSION 2.0.0  
.EMAIL CSDISPATCH@TFS.TAMU.EDU  
 
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