817  
FNUS74 KBRO 272029  
FWSBRO  
 
SPOT FORECAST FOR BAHIA GRANDE UNIT 2...USFWS  
NATIONAL WEATHER SERVICE BROWNSVILLE TX  
329 PM CDT WED AUG 27 2025  
 
FORECAST IS BASED ON FORECAST START TIME OF 0700 CDT ON AUGUST 28.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
   
THURSDAY
 
 
SKY/WEATHER.........SUNNY (15-25 PERCENT).  
MAX TEMPERATURE.....AROUND 93.  
MIN HUMIDITY........64 PERCENT.  
EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTHEAST UP TO 8 MPH  
EARLY IN THE MORNING.  
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 5 TO 13 MPH  
EARLY IN THE MORNING.  
MIXING HEIGHT.......5500 FT AGL.  
TRANSPORT WINDS.....SOUTHEAST 7 TO 16 MPH.  
 
TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........25 22 27 30 24 22 23 30 15 9 11  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............80 82 85 87 88 90 90 90 91 91 89  
RH..............90 90 81 73 70 66 65 66 64 64 67  
20 FT WIND DIR..S S S SE SE SE SE SE SE SE SE  
20 FT WIND SPD..3 5 6 7 9 10 13 14 14 14 14  
20 FT WIND GUST.8 8 9 10 12 13 15 16 17 17 17  
EYE LVL WND DIR.S S S SE SE SE SE SE SE SE SE  
EYE LVL WND SPD.2 3 4 4 5 6 8 8 8 8 8  
EYE LVL WND GST.5 5 5 6 7 8 9 10 10 10 10  
MIX HGT (KFT)...0.2 1.4 2.9 4.2 5.0 5.4 5.5 5.3 5.0 4.4 3.8  
TRANSP WIND DIR.S S S S SE SE SE SE SE SE SE  
TRANSP WIND SPD.8 7 10 9 10 12 13 14 15 16 16  
   
THURSDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT).  
MIN TEMPERATURE.....AROUND 79.  
MAX HUMIDITY........91 PERCENT.  
EYE LEVEL WINDS.....SOUTH WINDS UP TO 8 MPH.  
WIND (20 FT)........SOUTHEAST WINDS 6 TO 13 MPH.  
MIXING HEIGHT.......0 FT AGL.  
TRANSPORT WINDS.....SOUTH 14 TO 18 MPH.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........4 11 19 13 7 6 5 4 4 4 4 6  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............89 87 85 84 83 83 82 82 81 81 81 80  
RH..............69 71 77 81 82 84 85 85 86 87 87 90  
20 FT WIND DIR..SE SE SE SE SE SE S S S S S S  
20 FT WIND SPD..14 12 10 9 9 8 8 7 7 6 6 6  
20 FT WIND GUST.16 16 15 15 15 14 14 13 13 12 12 12  
EYE LVL WND DIR.SE SE SE SE SE SE S S S S S S  
EYE LVL WND SPD.8 7 6 5 5 5 5 4 4 4 4 4  
EYE LVL WND GST.10 10 9 9 9 8 8 8 8 7 7 7  
MIX HGT (KFT)...3.2 2.6 2.1 1.7 1.4 1.0 0.6 0.3 0.2 0.2 0.2 0.1  
TRANSP WIND DIR.SE SE SE SE SE S S S S S S S  
TRANSP WIND SPD.17 17 18 18 17 16 16 15 15 15 15 14  
   
FRIDAY
 
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
MAX TEMPERATURE.....AROUND 94.  
MIN HUMIDITY........61 PERCENT.  
EYE LEVEL WINDS.....SOUTHEAST WINDS UP TO 8 MPH.  
WIND (20 FT)........SOUTHEAST WINDS 6 TO 13 MPH.  
MIXING HEIGHT.......4400 FT AGL.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
 
TIME (CDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........7 11 14 14 11 5  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
TEMP............79 82 88 90 92 91  
RH..............91 85 72 64 61 61  
20 FT WIND......S 6 S 7 S 9 SE 12 SE 14 SE 14  
20 FT WIND GUST.10 10 13 15 17 17  
EYE LEVEL WIND..S 4 S 4 S 5 SE 7 SE 8 SE 8  
EYE LVL WND GST.6 6 8 9 10 10  
MIX HGT (FT)....BLW100 1000 3100 4100 4400 4000  
TRANSPORT WIND..S 12 S 10 S 13 S 13 S 14 SE 14  
 

 
FORECASTER...KAMBA  
REQUESTED BY...DONALD DEVRIENDT  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2520845.0/BRO  
.DELDT 08/27/25  
.FORMATTERVERSION 2.0.0  
.EMAIL DONALD_DEVRIENDT@FWS.GOV  
 
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