461
FXUS64 KBRO 192340 AAA
AFDBRO
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
640 PM CDT WED AUG 19 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 638 PM CDT WED AUG 19 2026
- HOT AND DRY CONDITIONS WILL CONTINUE THROUGH THE FORECAST PERIOD.
- MODERATE (LEVEL 2 OF 4) TO MAJOR RISK (3 OF 4) OF HEAT-RELATED
IMPACTS CONTINUE WITH PEAK AFTERNOON HEAT INDICES GENERALLY
BETWEEN 105 TO AROUND 110 DEGREES.
- THE COMBINATION OF BREEZY AND DRY WEATHER COINCIDING WITH LOW
AFTERNOON MINIMUM RELATIVE HUMIDITY VALUES BRINGS A CONTINUED
RISK OF FIRE WEATHER INTO NEXT WEEK.
DISCUSSION
ISSUED AT 1206 PM CDT WED AUG 19 2026
HOT TEMPERATURES WILL CONTINUE ACROSS DEEP SOUTH TEXAS UNDER UPPER
LEVEL RIDGING. TEMPERATURES EACH DAY WILL RISE INTO THE UPPER 90S TO
LOW 100S WITH HEAD INDICES BETWEEN 105-110F EXPECTED. WE LOOK TO
REMAIN JUST SHY OF HEAT ADVISORY CRITERIA EACH DAY, THOUGH A FEW
LOCATIONS MAY BRIEFLY EXCEED 111F. THERE IS A MODERATE (LEVEL 2
OF 4) TO MAJOR (LEVEL 3 OF 4) HEAT RISK EVERY AFTERNOON INTO NEXT
WEEK.
WHILE DRY CONDITIONS WILL PREVAIL (LESS THAN 10%), CAN NOT RULE OUT
VERY ISOLATED SEA BREEZE ACTIVITY THROUGH THE REMAINDER OF THE
PERIOD.
BREEZY CONDITIONS IN COMBINATION OF LOWER RH VALUE AND ABNORMALLY
DRY CONDITIONS, COULD LEAD TO THE POTENTIAL FOR RAPID WILDFIRE
SPREAD THROUGHOUT THE PERIOD. WHILE WE WILL SHY OF ANY RED FLAG
WARNINGS OR FIRE DANGER STATEMENTS, OUTDOOR BURNING IS NOT
RECOMMENDED.
AVIATION
(00Z TAFS)
ISSUED AT 638 PM CDT WED AUG 19 2026
SOUTHEAST WINDS 15 TO 20 KTS WITH GUSTS AROUND 25 KTS PREVAIL
ACROSS DEEP SOUTH TEXAS EARLY THIS EVENING. WINDS ARE EXPECTED TO
GRADUALLY DECREASE LATER THIS EVENING AND OVERNIGHT. SOUTHEAST
WINDS WILL INCREASE AND BECOME MODERATE AND GUSTY MID TO LATE
MORNING. SOME GUSTS AROUND 25 KNOTS WILL BE POSSIBLE IN THE
AFTERNOON. VFR CONDITIONS ARE EXPECTED FOR THE NEXT 24 HOURS.
MARINE
ISSUED AT 1206 PM CDT WED AUG 19 2026
AN ENHANCED PRESSURE GRADIENT ALONG THE IMMEDIATE COAST WILL RESULT
IN PERIODIC DAILY SMALL CRAFT CAUTION CONDITIONS ALONG THE LAGUNA
MADRE. OTHERWISE, EXPECT LIGHT TO MODERATE SOUTHEASTERLY WINDS
WITH 2 TO 3 FT SEAS AND 4 TO 6 SECOND PERIODS.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 82 97 81 98 / 0 0 0 0
HARLINGEN 79 101 78 102 / 0 0 0 0
MCALLEN 81 103 81 104 / 0 0 0 0
RIO GRANDE CITY 79 104 79 104 / 0 0 0 0
SOUTH PADRE ISLAND 82 90 82 90 / 0 0 0 0
BAYVIEW/PORT ISABEL 80 97 80 97 / 0 0 0 0
BRO WATCHES/WARNINGS/ADVISORIES
TX...NONE.
GM...NONE.
SHORT TERM...68-AM
LONG TERM....68-AM
AVIATION...63-KC
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