754
FXUS64 KBRO 202304 AAA
AFDBRO
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
604 PM CDT SUN SEP 20 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 551 PM CDT SUN SEP 20 2026
- DAILY LOW MEDIUM CHANCES OF RAIN RETURN MONDAY AND BECOME
REGION-WIDE BY NEXT TUESDAY.
- TEMPERATURES REMAIN WARM BUT EASE OFF A FEW DEGREES FROM WIDESPREAD
AREAS OF LOW 100S ALONG/WEST I-69 E TO MOSTLY UPPER 90S BY
TUESDAY.
- EXTREME RISKS OF HEAT-RELATED ILLNESSES (LEVEL 4/4) ARE LIKELY
TO CONTINUE FOR MORE POPULATED PORTIONS OF THE RGV/RIO GRANDE
PLAINS THROUGH AT LEAST TUESDAY WHILE THE REST OF THE REGION
EXPERIENCES MODERATE TO MAJOR RISKS (LEVEL 2/4 AND 3/4).
- A MODERATE RISK OF LIFE-THREATENING RIP CURRENTS CONTINUES
THROUGH TONIGHT.
DISCUSSION
ISSUED AT 1206 PM CDT SUN SEP 20 2026
QUIET CONDITIONS EXPECTED TODAY BEFORE A SOMEWHAT ACTIVE WEATHER
PATTERN TAKES HOLD EARLY WEEK.
DEEPER MOISTURE BEGINS TO MOVE INTO SOUTH TEXAS AND RAIN CHANCES
WILL INCREASE EARLY WEEK AS THE HIGH PRESSURE OVERHEAD WEAKENS A
BIT AND A FRONTAL BOUNDARY PUSHES INTO CENTRAL TEXAS. LOW RAIN
CHANCES ARE EXPECTED IN THE LOW TO MID-VALLEY ON MONDAY BUT
BECOME MORE WIDESPREAD AND INCREASE TO 30-60% ON TUESDAY. RAIN
CHANCES UP TO 50% LINGER INTO LATE WEEK. THE BULK OF ANY SHOWER
OR THUNDERSTORM ACTIVITY WILL PRIMARILY COINCIDE WITH PEAK DAYTIME
HEATING.
HEAT RISK WILL REMAIN MODERATE TO EXTREME OVER THE NEXT WEEK, THOUGH
INCREASED CLOUD COVER AND/OR SHOWERS AND THUNDERSTORMS COULD BRING A
LITTLE RELIEF. EXTREME HEAT RISK IS PRIMARILY EXPECTED IN MORE
URBAN/POPULATED AREAS. TEMPERATURES WILL STILL REMAIN ABOVE NORMAL
WITH MID TO UPPER 90S TO LOW TRIPLE DIGITS, THOUGH BY THURSDAY
AND FRIDAY, COULD STRUGGLE TO REACH THE TRIPLE DIGITS WITH THE
EXCESS CLOUDCOVER AND RAIN CHANCES. HEAT INDICES WILL PEAK EACH
AFTERNOON BETWEEN 105-110 DEGREES.
THERE IS A MODERATE RISK OF RIP CURRENTS AT AREA
BEACHES. THE STRONGEST AND MOST LIFE THREATENING RIPS CURRENTS OFTEN
OCCUR NEAR JETTIES AND PIERS. USE CAUTION IF ENTERING THE WATER.
AVIATION
(00Z TAFS)
ISSUED AT 551 PM CDT SUN SEP 20 2026
VFR WILL PREVAIL AT THE AERODROMES THROUGH THE NEXT 24 HOURS, WITH
LIGHT TO MODERATE WINDS WITH BREEZY GUSTS AND CLEAR TO PARTLY
CLOUDY SKIES. CONVECTION IS POSSIBLE, BUT WILL BE TOO ISOLATED TO
WARRANT A MENTION IN THE CURRENT ISSUANCE OF TAFS.
MARINE
ISSUED AT 1206 PM CDT SUN SEP 20 2026
GENERALLY FAVORABLE CONDITIONS WILL PREVAIL WITH LIGHT TO MODERATE
SOUTHEASTERLY WINDS WITH SEAS AROUND 2-3 FT AND 5-6 SECOND PERIODS.
DAILY CHANCES OF SHOWERS AND THUNDERSTORMS COULD LEAD TO LOCALLY
ENHANCED WINDS AND SEAS.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 80 97 80 95 / 0 20 0 40
HARLINGEN 76 99 75 98 / 0 10 0 40
MCALLEN 80 103 79 100 / 0 20 0 60
RIO GRANDE CITY 78 102 77 100 / 0 10 10 40
SOUTH PADRE ISLAND 82 89 82 89 / 0 10 10 30
BAYVIEW/PORT ISABEL 79 95 79 94 / 0 10 10 30
BRO WATCHES/WARNINGS/ADVISORIES
NONE.
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