983
FXUS64 KBRO 261830
AFDBRO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
130 PM CDT SUN JUL 26 2026
..NEW DISCUSSION, AVIATION, MARINE
KEY MESSAGES
UPDATED AT 130 PM CDT SUN JUL 26 2026
- A WARMING TREND WILL RESULT IN WIDESPREAD TRIPLE-DIGIT
TEMPERATURES AND HEAT INDEX VALUES THROUGH THE END OF JULY AND
INTO EARLY AUGUST.
- THE COMBINATION OF ABOVE NORMAL TEMPERATURES AND HIGH HUMIDITY
WILL RESULT IN A MODERATE TO MAJOR HEAT RISK THIS WEEK.
- A MODERATE RISK OF RIP CURRENTS ALONG THE LOWER TEXAS BEACHES
THROUGH MONDAY EVENING.
DISCUSSION
ISSUED AT 130 PM CDT SUN JUL 26 2026
OPPRESSIVE SUMMERTIME HEAT WILL BE THE MAIN WEATHER CONCERN
ACROSS DEEP SOUTH TEXAS THROUGH AT LEAST THE START OF AUGUST AS
THE REGION REMAINS UNDER THE INFLUENCE OF RIDGING ALOFT.
WIDESPREAD TRIPLE-DIGIT HIGH TEMPERATURES ARE EXPECTED FOR MOST
OF DEEP SOUTH TEXAS BEGINNING TOMORROW AFTERNOON, WITH THE
EXCEPTION BEING ALONG THE IMMEDIATE COAST AND LOWER TEXAS BEACHES
WHERE HIGHS SHOULD ONLY WARM INTO THE 90S. TEMPERATURES SHOULD BE
CLOSER TO 3-6 DEGREES ABOVE NORMAL FOR LATE JULY, AND A FEW AREAS
MAY TIE OR BREAK DAILY RECORD HIGH TEMPERATURES AND/OR HIGHEST LOW
TEMPERATURES AS WELL. THERE WON’T BE MUCH RELIEF FROM THE HEAT
DURING THE OVERNIGHT HOURS AS LOW TEMPERATURES REMAIN MILD IN THE
UPPER 70S AND LOW 80S. ADDITIONALLY, WELL ESTABLISHED LOW LEVEL
SOUTHERLY TO SOUTHEASTERLY FLOW WILL MAINTAIN ELEVATED HUMIDITY
ACROSS THE REGION, WHICH WILL RESULT IN TRIPLE-DIGIT HEAT INDEX
VALUES REGION WIDE. EXPECT AFTERNOON HEAT INDEX VALUES TO RANGE
FROM 105-115 DEGREES EACH DAY. HEAT ADVISORIES ARE LIKELY FOR
MOST OF THE WEEK, WITH A FEW AREAS POTENTIALLY REACHING EXTREME
HEAT WARNING CRITERIA BY MID TO LATE WEEK.
THE COMBINATION OF NEAR-RECORD TEMPERATURES AND HIGH HUMIDITY WILL
RESULT IN A MODERATE (LEVEL 2 OF 4) TO MAJOR (LEVEL 3 OF 4) HEAT
RISK FOR MOST OF THE WEEK, WITH A FEW AREAS POTENTIALLY REACHING
EXTREME (LEVEL 4 OF 4) HEAT RISK BY THE END OF THE WEEK AND INTO
THE WEEKEND. IN ADDITION TO THE OPPRESSIVE DAYTIME HEAT, VERY WARM
OVERNIGHT LOW TEMPERATURES WILL NOT ALLOW FOR MUCH RECOVERY FROM
THE DAYTIME HEAT AND CAN RESULT IN AN INCREASED RISK OF HEAT-
RELATED ILLNESSES. CONTINUE TO PRACTICE HEAT SAFETY – WEAR
SUNSCREEN, LIGHT-COLORED LOOSE-FITTING CLOTHING, TAKE FREQUENT
BREAKS IN THE SHADE OR INDOORS, AND STAY HYDRATED!
AVIATION
(18Z TAFS)
ISSUED AT 130 PM CDT SUN JUL 26 2026
VFR WILL PREVAIL THROUGH THE FORECAST PERIOD AT ALL TAF SITES.
EXPECT PERSISTENT SOUTHERLY TO SOUTHEASTERLY WINDS AROUND 10-15
KNOTS WITH OCCASIONAL GUSTS UP TO 20 KNOTS THROUGH THE LATE
EVENING HOURS. WINDS SHOULD FALL BELOW 10 KNOTS TONIGHT, AND
INCREASE ONCE AGAIN BY MID TO LATE MONDAY MORNING.
MARINE
ISSUED AT 130 PM CDT SUN JUL 26 2026
GENERALLY FAVORABLE MARINE CONDITIONS WILL CONTINUE THROUGH
TONIGHT WITH LIGHT TO MODERATE SOUTHEAST WINDS AND SLIGHT TO
MODERATE SEAS. AN ENHANCED PRESSURE GRADIENT ALONG THE IMMEDIATE
COAST WILL RESULT IN SMALL CRAFT EXERCISE CAUTION CONDITIONS ALONG
THE LAGUNA MADRE AND NEARSHORE GULF WATERS DAILY DURING THE LATE
MORNING AND EARLY EVENING HOURS EACH DAY NEXT WEEK. OTHERWISE,
EXPECT RAIN-FREE CONDITIONS.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 80 97 81 96 / 0 0 0 0
HARLINGEN 76 100 78 99 / 0 0 0 0
MCALLEN 79 103 80 102 / 0 0 0 0
RIO GRANDE CITY 77 104 78 103 / 0 0 0 0
SOUTH PADRE ISLAND 81 89 81 88 / 0 0 0 0
BAYVIEW/PORT ISABEL 78 96 79 95 / 0 0 0 0
BRO WATCHES/WARNINGS/ADVISORIES
TX...NONE.
GM...NONE.
SHORT TERM...22-GARCIA
LONG TERM....22-GARCIA
AVIATION...22-GARCIA
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