174  
FXUS64 KBRO 081709  
AFDBRO  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE BROWNSVILLE TX  
1209 PM CDT FRI AUG 8 2025  
   
..NEW DISCUSSION, AVIATION, MARINE
 
 
   
DISCUSSION
 
 
ISSUED AT 1206 PM CDT FRI AUG 8 2025  
 
TYPICAL SUMMERTIME HOT AND HUMID CONDITIONS ARE EXPECTED TO PERSIST  
OVER DEEP SOUTH TEXAS AS UPPER-LEVEL RIDGING CONTINUES BOTH OVER THE  
DESERT SOUTHWEST AND THE OVER THE EASTERN GULF. AT THE SURFACE, MILD  
OFFSHORE TROUGHING WILL CREATE CONDITIONS THAT ARE CONDUCIVE FOR SEA  
BREEZE SHOWER/THUNDERSTORM FORMATION TOMORROW THROUGH MIDWEEK NEXT  
WEEK. ISOLATED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO FORM MAINLY  
IN THE AFTERNOONS AS THE SEA BREEZE SURGES WESTWARD INLAND, AND ARE  
EXPECTED PRIMARILY IN AREAS EAST OF I-69C. CHANCES OF PRECIPITATION  
EACH DAY WILL RANGE BETWEEN 20-30%. WINDS WILL BE LIGHT TO MODERATE  
AND SOUTH-SOUTHEASTERLY, ALLOWING FOR CONTINUAL ADVECTION OF GULF  
MOISTURE THROUGHOUT THE WEEK.  
 
HEAT RISK IS ALSO A CONCERN THROUGHOUT THE FORECAST PERIOD, AS  
TEMPERATURES ARE EXPECTED TO CLIMB INTO THE UPPER 90S/LOWER 100S  
EVERY DAY THIS WEEKEND INTO NEXT WEEK. IN ADDITION, HEAT INDICES  
WILL BE EVEN HIGHER DUE TO HUMIDITY, WITH VALUES SLOWLY INCREASING  
THROUGH THE END OF NEXT WEEK. MODERATE HEAT RISK (LEVEL 2 OF 4) IS  
EXPECTED THROUGHOUT DEEP SOUTH TEXAS THIS WEEKEND INTO EARLY NEXT  
WEEK AND WILL INCREASE TO A MAJOR HEAT RISK (LEVEL 3 OF 4) BY THE  
MIDDLE OF NEXT WEEK. WHEN THIS OCCURS, SPECIAL WEATHER STATEMENTS OR  
HEAT ADVISORIES MAY BECOME NECESSARY. LOW TEMPERATURES WILL BE IN  
THE UPPER 70S AND EVEN THE LOWER 80S FOR PORTIONS OF THE LOWER RIO  
GRANDE VALLEY.  
 

 
   
AVIATION
 
 
(18Z TAFS)  
ISSUED AT 1206 PM CDT FRI AUG 8 2025  
 
VFR CONDITIONS EXPECTED AT ALL AIRPORTS WITH SOUTHEASTERLY WINDS.  
WINDS COULD BECOME A LITTLE GUSTY AROUND 20Z AT BRO DUE TO THE SEA  
BREEZE FRONT, ENDING BY THE EVENING.  
 

 
   
MARINE
 
 
ISSUED AT 1206 PM CDT FRI AUG 8 2025  
 
FAVORABLE MARINE CONDITIONS ARE EXPECTED THROUGHOUT THIS WEEKEND  
INTO NEXT WEEK WITH LOW WAVE HEIGHTS (BETWEEN 1-3 FEET) AND GENTLE  
TO MODERATE SOUTH-SOUTHEASTERLY WINDS. WINDSPEEDS SHOULD REMAIN  
BELOW SMALL CRAFT ADVISORY AND SMALL CRAFT EXERCISE CAUTION CRITERIA  
THROUGHOUT THE WEEK. THERE IS A SMALL (UP TO 20%) CHANCE OF SOME  
ISOLATED SHOWERS/THUNDERSTORMS OVER THE GULF WATERS AND THE BAY  
THROUGHOUT THE WEEK.  
 

 
   
PRELIMINARY POINT TEMPS/POPS
 
 
BROWNSVILLE 79 96 79 95 / 0 20 10 20  
HARLINGEN 75 97 74 98 / 0 20 10 20  
MCALLEN 79 101 79 101 / 0 10 10 20  
RIO GRANDE CITY 77 102 77 102 / 0 10 10 10  
SOUTH PADRE ISLAND 80 88 80 89 / 0 10 10 20  
BAYVIEW/PORT ISABEL 77 93 77 94 / 0 10 10 20  
 

 
   
BRO WATCHES/WARNINGS/ADVISORIES
 
 
TX...NONE.  
GM...NONE.  

 
 

 
 
SHORT TERM...55-MM  
LONG TERM....55-MM  
AVIATION...55-MM  
 
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