156
FXUS64 KBRO 031119 AAA
AFDBRO
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
619 AM CDT MON AUG 3 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 618 AM CDT MON AUG 3 2026
- HEAT ADVISORIES MAY BE NEEDED EACH AFTERNOON. HEAT INDICES
BETWEEN 105-110F, POTENTIALLY HIGHER, ARE EXPECTED WITH A
MODERATE TO MAJOR RISK OF HEAT RELATED ILLNESS.
- LOW (15 PERCENT OR LESS) CHANCE OF ISOLATED SHOWERS AND
THUNDERSTORMS ALONG THE SEA BREEZE EACH AFTERNOON THURSDAY
THROUGH SUNDAY, OTHERWISE, DRY WEATHER IS EXPECTED.
DISCUSSION
ISSUED AT 1048 PM CDT SUN AUG 2 2026
RECORD HEAT COMBINED WITH THE SEA BREEZE, ROAMING OUTFLOW
BOUNDARIES, AND A STALLING FRONTAL BOUNDARY TO KICK UP MULTIPLE
STRONG TO SEVERE SLOW-MOVING THUNDERSTORMS THIS AFTERNOON, WITH
HEAVY RAINFALL AND A FEW STRONG DOWNBURSTS. WITH THE EXCITEMENT
OVER, WE NOW RETURN TO THE PREVIOUSLY MESSAGED HEAT THREAT, WITH A
MODERATE (LEVEL 2 OF 4) TO MAJOR (LEVEL 3 OF 4) HEAT RISK
EXPECTED EVERY DAY OF THE FORECAST AND LITTLE TO NO RELIEF EACH
NIGHT.
THE PERSISTENT RIDGE OF HIGH PRESSURE ACROSS THE DESERT SW
STRENGTHENS SLIGHTLY INTO TUESDAY, BEFORE ALLOWING WEAKER PRESSURE
TO BUILD ALONG THE COAST. THIS WILL MAINTAIN ABOVE NORMAL
TEMPERATURES ACROSS DEEP SOUTH TEXAS THROUGH THE FORECAST PERIOD
BUT ALSO ALLOW HUMIDITY TO INCREASE MID TO LATE WEEK. THERE
REMAINS A LOW (LESS THAN 10 TO 20 PERCENT) CHANCE OF SHOWERS OR
THUNDERSTORMS ALONG THE SEA BREEZE EACH AFTERNOON THURSDAY THROUGH
SUNDAY.
HEAT ADVISORIES MAY BE NEEDED EACH AFTERNOON, WITH THE HIGHEST
HEAT INDICES OCCURRING BEHIND THE SEA BREEZE AS IT INCREASES
HUMIDITY FROM EAST TO WEST.
AVIATION
(12Z TAFS)
ISSUED AT 618 AM CDT MON AUG 3 2026
VFR CONTINUES TO BE ANTICIPATED AT THE AERODROMES THROUGH THE
NEXT 24 HOURS. CLEAR TO PARTLY CLOUDY SKIES WILL OCCUR WITH LIGHT
WINDS DURING THE OVERNIGHT HOURS BECOMING BREEZY WITH HIGHER GUSTS
FOR THE DAYTIME.
MARINE
ISSUED AT 1048 PM CDT SUN AUG 2 2026
LIGHT TO MODERATE SOUTHEASTERLY WINDS CONTINUE GENERALLY FAVORABLE
MARINE CONDITIONS ALONG THE LOWER TEXAS COAST WITH SEAS OF 3 FEET
OR LESS.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 98 81 97 81 / 0 0 0 0
HARLINGEN 101 78 100 78 / 0 0 0 0
MCALLEN 103 81 103 81 / 0 0 0 0
RIO GRANDE CITY 102 79 103 79 / 0 0 0 0
SOUTH PADRE ISLAND 89 81 89 81 / 0 0 0 0
BAYVIEW/PORT ISABEL 96 79 96 79 / 0 0 0 0
BRO WATCHES/WARNINGS/ADVISORIES
NONE.
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