414
FXUS64 KBRO 220331
AFDBRO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1031 PM CDT MON SEP 21 2026
..NEW DISCUSSION, MARINE
KEY MESSAGES
UPDATED AT 1019 PM CDT MON SEP 21 2026
- SUSTAINED DAILY OPPORTUNITY FOR RAINFALL, ESPECIALLY WEDNESDAY
AND THURSDAY.
- CONTINUED HOT TEMPERATURES, BUT NO EXTREMES.
- ELEVATED RISK OF RIP CURRENTS AT THE LOCAL BEACHES.
DISCUSSION
ISSUED AT 1019 PM CDT MON SEP 21 2026
BROAD 500 MB HIGH PRESSURE WILL REMAIN THE DOMINANT WEATHER
FEATURE OVER DEEP SOUTH TEXAS AND THE RIO GRANDE VALLEY THROUGH
THE FORECAST PERIOD. HOWEVER, THE CENTER OF THE HIGH, POSITIONED
GENERALLY OVER EAST TEXAS, WILL PRODUCE A MORE EASTERLY AND MOIST
FLOW OFF OF THE NEIGHBORING GULF OF AMERICA, WITH PRECIPITABLE
WATER VALUES HOVERING NEAR 2 INCHES. THIS WILL HAVE THE RESULT OF
ENHANCING THE DAILY SEABREEZE BOUNDARY, WITH ISOLATED TO SCATTERED
SHOWERS AND THUNDERSTORMS ACROSS THE BRO CWFA. AT THIS TIME, THE
BEST CHANCES FOR PRECIPITATION ARE WEDNESDAY AND THURSDAY, WITH
THE BEST COMBINATION OF MOISTURE AND EASTERLY FLOW.
TEMPERATURE-WISE, ABOVE NORMAL TO WELL ABOVE NORMAL VALUES WILL
OCCUR, DESPITE THE AUTUMNAL EQUINOX OFFICIALLY KICKING-OFF ON
TUESDAY 22 SEPTEMBER AT 7:04 PM CDT.
FINALLY, WINDS AND SEAS ALONG THE LOWER TEXAS COAST WILL PRODUCE A
LOW TO MODERATE RISK OF RIP CURRENTS AT THE LOCAL BEACHES THROUGH
THE PERIOD.
AVIATION
(00Z TAFS)
ISSUED AT 558 PM CDT MON SEP 21 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 1019 PM CDT MON SEP 21 2026
HIGH PRESSURE OVER THE WESTERN GULF OF AMERICA WILL PRODUCE LIGHT
TO MODERATE WINDS AND LOW TO MODERATE SEAS ALONG THE LOWER TEXAS
COAST THROUGH THE NEXT SEVERAL DAYS. SMALL CRAFT SHOULD EXERCISE
CAUTION AND SMALL CRAFT ADVISORY ARE NOT LIKELY TO BE NEEDED.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 80 96 80 96 / 10 30 30 50
HARLINGEN 76 99 76 98 / 0 30 30 50
MCALLEN 79 101 79 99 / 0 40 30 50
RIO GRANDE CITY 77 101 77 99 / 10 40 20 50
SOUTH PADRE ISLAND 83 90 83 90 / 10 30 20 40
BAYVIEW/PORT ISABEL 79 94 79 94 / 10 30 30 50
BRO WATCHES/WARNINGS/ADVISORIES
NONE.
SHORT & LONG TERM...TOMASELLI-66
UPPER AIR...MARCELLONI-55
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