616
FXUS64 KBRO 112254 AAA
AFDBRO
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
554 PM CDT TUE AUG 11 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 550 PM CDT TUE AUG 11 2026
- UNSEASONABLY HOT HIGH TEMPERATURES THROUGH THE FORECAST.
- DRY WEATHER, WITH ISOLATED CONVECTION POSSIBLE ON FRIDAY.
- SLIGHTLY ADVERSE WINDS WEDNESDAY THROUGH FRIDAY FOR MARINERS.
- ELEVATED RISK OF RIP CURRENTS FOR THE SECOND HALF OF THE WEEK.
DISCUSSION
ISSUED AT 125 PM CDT TUE AUG 11 2026
HEAT WILL CONTINUE TO BE THE MAIN WEATHER CONCERN THROUGH THE
WEEKEND ACROSS DEEP SOUTH TEXAS AS THE REGION REMAINS UNDER THE
INFLUENCE OF RIDGING ALOFT. NEAR TO SLIGHTLY ABOVE NORMAL HIGH
TEMPERATURES WILL PERSIST THROUGH AT LEAST MID TO LATE AUGUST,
WITH HIGHS RANGING FROM THE MID TO UPPER 90S ALONG THE IMMEDIATE
COAST AND AROUND 100-105 DEGREES FURTHER INLAND (GENERALLY ALONG
AND WEST OF I-69E). IN COMBINATION WITH ELEVATED HUMIDITY VIA
PERSISTENT LOW LEVEL SOUTHERLY TO SOUTHEASTERLY FLOW, AFTERNOON
HEAT INDEX VALUES WILL RANGE FROM 100-110 DEGREES EACH DAY. SOME
SLIGHTLY DEEPER MIXING WILL RESULT IN SLIGHTLY LOWER DEW POINTS,
MAINLY ALONG AND WEST OF US-281, BUT HEAT INDICES SHOULD STILL
REMAIN IN THE TRIPLE-DIGITS. AN ISOLATED SHOWER OR STORM CANNOT BE
RULED OUT, BUT RAIN CHANCES ARE EXPECTED TO REMAIN FAIRLY LOW (10%
OR LESS) WITH THE EXCEPTION ON FRIDAY WITH AROUND A 20% CHANCE
ALONG THE SEA BREEZE. OTHERWISE, A TIGHTENING PRESSURE GRADIENT
WILL RESULT IN WIND GUSTS CLOSER TO 25-30 MPH BY TOMORROW AND
THURSDAY AFTERNOONS, BEFORE DECREASING SLIGHTLY BY FRIDAY AND INTO
THE WEEKEND CLOSER TO 15-20 MPH.
AVIATION
(00Z TAFS)
ISSUED AT 550 PM CDT TUE AUG 11 2026
MOSTLY CLEAR, RAIN-FREE SKIES WILL PREVAIL AT THE AERODROMES
THROUGH THE NEXT 24 HOURS. A LIGHT TO MODERATE ONSHORE FLOW
TONIGHT WILL BECOME WINDY WITH STRONGER GUSTS ON WEDNESDAY.
OVERALL, VFR WILL PREVAIL THROUGH THE NEXT 24 HOURS.
MARINE
ISSUED AT 125 PM CDT TUE AUG 11 2026
LOW TO MODERATE SEAS AND LIGHT TO MODERATE SOUTHERLY TO
SOUTHEASTERLY WINDS WILL PREVAIL THROUGH THE THE END OF THE WEEK
AND INTO THE WEEKEND ACROSS THE GULF WATERS AND LAGUNA MADRE.
EXPECT SMALL CRAFT EXERCISE CAUTION CONDITIONS ALONG THE LAGUNA
MADRE AND NEARSHORE GULF WATERS EACH DAY FROM THE LATE MORNING
HOURS TO EARLY EVENING HOURS DUE TO AN ENHANCED PRESSURE GRADIENT.
A BRIEF SMALL CRAFT ADVISORY CANNOT BE RULED OUT DUE TO OCCASIONAL
GUSTS UPWARDS OF 20 KNOTS.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 81 97 81 96 / 0 0 0 0
HARLINGEN 77 100 78 99 / 0 0 0 0
MCALLEN 81 103 81 102 / 0 0 0 0
RIO GRANDE CITY 79 104 79 103 / 0 0 0 0
SOUTH PADRE ISLAND 82 90 82 89 / 0 0 0 0
BAYVIEW/PORT ISABEL 80 96 80 96 / 0 0 0 0
BRO WATCHES/WARNINGS/ADVISORIES
NONE.
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