565
FXUS64 KBRO 091131 AAB
AFDBRO
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
631 AM CDT SUN AUG 9 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 626 AM CDT SUN AUG 9 2026
- SUSTAINED DRY WEATHER FOR THE NEW WORK WEEK.
- DAYTIME HIGHS INCREASING EACH DAY, WITH A MODERATE TO MAJOR
HEAT RISK.
- SMALL CRAFT SHOULD EXERCISE CAUTION TO SMALL CRAFT ADVISORY
MORE LIKELY STARTING WEDNESDAY.
- MODERATE TO HIGH RISK OF RIP CURRENTS AT LOCAL BEACHES DUE TO
INCREASING WINDS AND BUILDING SEAS.
DISCUSSION
ISSUED AT 1005 PM CDT SAT AUG 8 2026
THE KBRO UPPER AIR SOUNDING FROM THIS EVENING INDICATED A
PRECIPITABLE WATER VALUE OF 1.89 INCHES, WITH SUPPORTED A
SMATTERING OF CONVECTION EARLIER TODAY ACROSS THE BRO CWFA. A
SIMILAR MOISTURE CONTENT WITHIN THE ATMOSPHERE WILL ALLOW ANOTHER
ROUND IF ISOLATED SHOWERS AND THUNDERSTORMS FOR SUNDAY.
AFTERWARDS, AND FOR THE REMAINDER OF THE FORECAST PERIOD, DRY
WEATHER WILL PREVAIL AS AVAILABLE MOISTURE DECREASES.
TEMPERATURE-WISE, SLIGHTLY COOLER TEMPERATURES ON SUNDAY, THE
RESULT OF CONVECTION WITH ENHANCED CLOUD COVER, WILL QUICKLY
DISAPPEAR FOR THE NEW WORK WEEK, WITH DAILY HIGH TEMPERATURES
INCHING UP A DEGREE OR TWO EACH SUCCESSIVE DAY INTO WELL ABOVE
NORMAL LEVELS. THIS WILL CAUSE A MODERATE TO MAJOR HEAT RISK
ACROSS DEEP SOUTH TEXAS AND THE RIO GRANDE VALLEY TO BECOME MAJOR
TO EXTREME AS THE WEEK PROGRESSES.
FINALLY, WITH A GRADUALLY TIGHTENING PRESSURE GRADIENT ALONG THE
LOWER TEXAS COAST EXPECTED, A MODERATE TO HIGH RISK OF RIP
CURRENTS AT THE LOCAL BEACHES WILL LIKELY OCCUR DAILY.
AVIATION
(12Z TAFS)
ISSUED AT 626 AM CDT SUN AUG 9 2026
VFR CONDITIONS ARE FORECAST TO CONTINUE THIS MORNING. THERE IS A
30% CHANCE FOR SOME ISOLATED CONVECTION ALONG THE SEA BREEZE THIS
AFTERNOON, WHICH COULD RESULT IN BRIEF MVFR TO IFR CEILINGS AND
VISIBILITIES. CALM WINDS THIS MORNING ARE FORECAST TO BECOME
SOUTHEASTERLY AROUND 5-10 KNOTS LATER THIS MORNING, SHIFTING MORE
EASTERLY THROUGH THE AFTERNOON. LIGHT AND VARIABLE WINDS ARE
FORECAST TO RETURN OVERNIGHT.
MARINE
ISSUED AT 1005 PM CDT SAT AUG 8 2026
THE PRESSURE GRADIENT OVER THE WESTERN GULF OF AMERICA IS EXPECTED
TO BECOME ENHANCED DURING THE FORECAST PERIOD. LIGHT TO MODERATE
WINDS AND LOW TO MODERATE SEAS INITIALLY WILL BECOME MODERATE TO
BREEZY WINDS AND MODERATE TO SLIGHTLY ADVERSE SEAS BEGINNING
AROUND THE MIDDLE OF THE WEEK. SMALL CRAFT SHOULD EXERCISE CAUTION
AND POSSIBLY SMALL CRAFT ADVISORY WILL BE NEEDED WEDNESDAY
THROUGH FRIDAY TO ACCOUNT FOR THE ANTICIPATED STRONGER WINDS AND
HIGHER SEAS.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 94 81 96 81 / 20 0 0 0
HARLINGEN 96 76 99 77 / 20 0 10 0
MCALLEN 100 80 102 80 / 20 0 0 0
RIO GRANDE CITY 100 78 102 78 / 10 0 0 0
SOUTH PADRE ISLAND 88 81 89 81 / 10 0 0 0
BAYVIEW/PORT ISABEL 93 79 95 79 / 20 0 0 0
BRO WATCHES/WARNINGS/ADVISORIES
TX...NONE.
GM...NONE.
SHORT TERM...99
LONG TERM....99
AVIATION...60-BE
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