071
FXUS64 KBRO 292230
AFDBRO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
530 PM CDT SAT AUG 29 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 530 PM CDT SAT AUG 29 2026
- HOT TEMPERATURES, NEAR RECORD TO RECORD-BREAKING, ARE EXPECTED
TO CONTINUE INTO LABOR DAY WEEKEND.
- WIDESPREAD MAJOR (LEVEL 3 OF 4) TO EXTREME (LEVEL 4 OF 4) HEAT
RISK IS EXPECTED.
- ISOLATED SEA BREEZE SHOWERS AND THUNDERSTORMS CANNOT BE RULED
OUT EACH DAY.
DISCUSSION
ISSUED AT 135 PM CDT SAT AUG 29 2026
HEAT WILL CONTINUE TO BE THE MAIN WEATHER CONCERN HEADING INTO
EARLY SEPTEMBER ACROSS DEEP SOUTH TEXAS AS THE REGION REMAINS
UNDER INFLUENCE OF HIGH PRESSURE ALOFT. ALTHOUGH THE RIDGE ALOFT
IS EXPECTED TO SHIFT TOWARDS THE SOUTHERN PLAINS, WE'LL STILL
MAINTAIN NEAR RECORD TO RECORD-BREAKING TRIPLE DIGIT HIGH
TEMPERATURES EACH AFTERNOON HEADING INTO LABOR DAY WEEKEND. EXPECT
HIGHS EACH AFTERNOON TO RANGE FROM 95-103 DEGREES ALONG AND EAST
OF US-281, AND CLOSER TO 103-107 DEGREES WEST OF US-281.
PERSISTENT LOW LEVEL SOUTHERLY TO SOUTHEASTERLY FLOW WILL MAINTAIN
ELEVATED HUMIDITY, MAINLY ALONG AND EAST OF US-281, ALLOWING FOR
HEAT INDICES TO REACH THE 109-112 RANGE EACH AFTERNOON. THIS WILL
RESULT IN A MAJOR (LEVEL 3 OF 4) TO EXTREME (LEVEL 4 OF 4) HEAT
RISK ACROSS DEEP SOUTH TEXAS. CONTINUE TO PRACTICE HEAT SAFETY TO
PREVENT HEAT-RELATED ILLNESSES AND ALWAYS LOOK BEFORE YOU LOCK
YOUR CAR! MOST OF THE WEEK IS EXPECTED TO REMAIN RAIN-FREE, BUT
SOME ISOLATED SEA BREEZE ACTIVITY CANNOT BE RULED OUT WITH DAILY
RAIN CHANCES NEAR OR BELOW 10-15%.
AVIATION
(00Z TAFS)
ISSUED AT 530 PM CDT SAT AUG 29 2026
THROUGH 00Z MONDAY....VFR CONDITIONS WILL PREVAIL THROUGH THE 00Z
TAF CYCLE. THERE IS A CHANCE FOR SHOWERS AND THUNDERSTORMS ALONG THE
SEA BREEZE SUNDAY AFTERNOON/EVENING. GIVEN HOW LOW THE CHANCES ARE
AND HOW ISOLATED AND SCATTERED IN COVERAGE THEY WILL BE, HAVE NOT
INCLUDED SHOWERS AND THUNDERSTORMS IN THE TAFS AT THIS TIME.
SOUTHEAST WINDS 10-15 KTS WITH GUSTS BETWEEN 20-25 KTS WILL SUBSIDE
LATER THIS EVENING. TONIGHT, WINDS WILL TREND TOWARDS LIGHT AND
VARIABLE. ON SUNDAY, THE SOUTHEASTERLY COMPONENT WILL PICK BACK UP
WITH SPEEDS BETWEEN 10-15 KTS WITH GUSTS AS HIGH AS 20 KTS OR SO.
MARINE
ISSUED AT 135 PM CDT SAT AUG 29 2026
GENERALLY FAVORABLE MARINE CONDITIONS WILL CONTINUE THROUGH THE
FORECAST PERIOD WITH LOW SEAS AND LIGHT TO LOW TO MODERATE
SOUTHEASTERLY TO EASTERLY WINDS. HOWEVER, LOCALLY HIGHER WINDS
AND SEAS CANNOT BE RULED OUT NEAR ANY SHOWERS OR THUNDERSTORMS.
THE BEST CHANCES FOR SHOWERS AND THUNDERSTORMS ARE MAINLY OVER THE
OFFSHORE GULF WATERS THIS WEEKEND AND EARLY NEXT WEEK.
OTHERWISE,BRIEF SMALL CRAFT EXERCISE CAUTION CONDITIONS CANNOT BE
RULED OUT ACROSS THE LAGUNA MADRE DURING THE LATE AFTERNOON HOURS,
WITH OCCASIONAL GUSTS NEAR 15-20 KNOTS.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 80 97 81 98 / 10 10 0 0
HARLINGEN 76 101 77 101 / 0 10 0 10
MCALLEN 80 103 81 103 / 0 10 0 0
RIO GRANDE CITY 78 104 79 104 / 10 0 0 0
SOUTH PADRE ISLAND 81 89 81 90 / 10 10 0 0
BAYVIEW/PORT ISABEL 79 96 79 96 / 0 10 0 0
BRO WATCHES/WARNINGS/ADVISORIES
TX...NONE.
GM...NONE.
SHORT TERM...22
LONG TERM....22
AVIATION...23-EVBUOMA
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