987
FXUS64 KBRO 030608 AAA
AFDBRO
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
108 AM CDT THU SEP 3 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 1241 AM CDT THU SEP 3 2026
- A HEAT ADVISORY IS IN EFFECT THURSDAY FROM 11 AM UNTIL 6 PM FOR
STARR, SOUTHERN HIDALGO, CAMERON, WILLACY, KENEDY COUNTIES
EXCLUDING THE BARRIER ISLANDS.
- MAJOR (LEVEL 3 OF 4) TO EXTREME (LEVEL 4 OF 4) HEAT RISK IS
EXPECTED THROUGHOUT MUCH OF DEEP SOUTH TEXAS THROUGH EARLY NEXT
WEEK.
- A COMBINATION LOW RELATIVE HUMIDITY, DRY GRASSES, AND HOT
TEMPERATURES MAY RAISE CONCERNS FOR FAVORABLE FIRE WEATHER
THROUGH FRIDAY.
- SEA BREEZE SHOWERS AND THUNDERSTORMS EAST OF I-69C ARE POSSIBLE
EACH AFTERNOON LABOR DAY WEEKEND AND CONTINUING INTO EARLY NEXT
WEEK.
DISCUSSION
ISSUED AT 1036 PM CDT WED SEP 2 2026
THE HOT CONDITIONS WE'VE HAD OVER THE PAST FEW WEEKS WILL CONTINUE
THROUGH EARLY SEPTEMBER AS RIDGING IN THE MID-UPPER LEVELS REMAINS
DOMINANT OVER DEEP SOUTH TEXAS FOR MUCH OF THE FORECAST PERIOD.
A HEAT ADVISORY IS IN EFFECT TODAY FROM 11 AM TO 6 PM FOR INLAND AND
COASTAL KENEDY, WILLACY, AND CAMERON COUNTIES AS APPARENT
TEMPERATURES ARE FORECAST TO CLIMB TO 111-115 DEGF, WITH SOME
LOCATIONS BRIEFLY SURPASSING 116 DEGF. WIDESPREAD MAJOR (LEVEL 3 OF
4) TO EXTREME (LEVEL 4 OF 4) RISK OF HEAT-RELATED ILLNESS WILL
CONTINUE ACROSS THE CWA INTO THIS WEEKEND. MORE HEAT ADVISORIES
AND/OR SPECIAL WEATHER STATEMENTS ARE POSSIBLE THROUGH SATURDAY.
HIGH TEMPERATURES WILL GENERALLY RANGE FROM 100-107 DAILY (90S NEAR
THE COAST). OVERNIGHT LOWS OFFER LITTLE RELIEF, NEAR 80 IN THE RGV
AND MID-UPPER 70S IN THE RANCHLANDS.
LOW RELATIVE HUMIDITY, BREEZY AFTERNOON WINDS, AND DRY GRASSES/BRUSH
WILL WARRANT AN EYE KEPT ON FIRE WEATHER CONDITIONS. WHILE IDEAL
CONDITIONS DON'T ALIGN PERFECTLY TO WARRANT A FIRE DANGER STATEMENT,
CAUTION SHOULD BE EXERCISED REGARDING OUTDOOR BURNING ACTIVITIES, AS
GRASSES ARE FAVORABLE TO IGNITE. RELATIVE HUMIDITY WILL BEGIN TO
INCREASE THIS WEEKEND, LOWERING THE THREAT OF FIRE WEATHER
CONDITIONS, BUT DROUGHT CONDITIONS ARE NOT ANTICIPATED TO IMPROVE.
RAIN CHANCES INCREASE INTO LABOR DAY WEEKEND AS COASTAL TROUGHING
NEAR THE SURFACE WILL SUPPORT ISOLATED SHOWERS AND THUNDERSTORMS
MOVING INLAND ALONG THE SEA BREEZE. ACTIVITY SHOULD REMAIN PRIMARILY
EAST OF US281, WITH POPS INCREASING TO 15-25% SATURDAY AND
PERSISTING EACH AFTERNOON THROUGH THE MIDDLE OF NEXT WEEK. DESPITE
THE INCREASE IN RAIN CHANCES, THIS IS NOT ANTICIPATED TO BE A
PARTICULARLY WET PATTERN WITH DAILY QPF TOTALS LESS THAN A TENTH OF
AN INCH. BE SURE TO HAVE ACCESS TO A SHELTER FOR ANY OUTDOOR
ACTIVITIES IN THE CASE OF A SHOWER... AND FOR SOME AC!
AVIATION
(06Z TAFS)
ISSUED AT 1241 AM CDT THU SEP 3 2026
VFR CONTINUES TO BE ANTICIPATED AT THE AERODROMES THROUGH THE NEXT
24 HOURS. LIMITED CLOUD COVER WILL OCCUR, WITH BREEZY DAYTIME WINDS
AND A LIGHTER ONSHORE FLOW AT NIGHT.
MARINE
ISSUED AT 1036 PM CDT WED SEP 2 2026
GENTLE TO MODERATE SOUTH-SOUTHEASTERLY FLOW WITH SLIGHT SEAS PREVAIL
THROUGH THE PERIOD. BREEZY WINDS THIS AFTERNOON WILL LEAVE CHOPPY
CONDITIONS ON THE LAGUNA MADRE AND NEARSHORE WATERS. AN ISOLATED
SHOWER OR THUNDERSTORM IS POSSIBLE EACH DAY OVER THE GULF, WITH
CHANCES INCREASING TO 15-30% SATURDAY INTO THE MIDDLE OF NEXT
WEEK.
CLIMATE
ISSUED AT 1036 PM CDT WED SEP 2 2026
RECORD HIGH TEMPERATURES MAY BE TIED OR BROKEN ACROSS THE RIO GRANDE
VALLEY TODAY. THE EXISTING RECORD HIGH TEMPERATURES FOR
BROWNSVILLE, HARLINGEN, AND MCALLEN ARE LISTED BELOW.
THURSDAY, SEPTEMBER 3
BROWNSVILLE: 102F (2011)
HARLINGEN: 106F (2011)
MCALLEN: 106F (2011)
FRIDAY, SEPTEMBER 4
BROWNSVILLE: 103F (2011, 2000)
HARLINGEN: 107F (2011)
MCALLEN: 108F (2011)
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 99 81 98 81 / 0 0 0 0
HARLINGEN 103 78 102 77 / 0 0 0 0
MCALLEN 105 82 104 81 / 0 0 0 0
RIO GRANDE CITY 106 80 105 79 / 0 0 0 0
SOUTH PADRE ISLAND 90 82 90 82 / 0 0 0 0
BAYVIEW/PORT ISABEL 97 79 96 79 / 0 0 0 0
BRO WATCHES/WARNINGS/ADVISORIES
TX...HEAT ADVISORY FROM 11 AM THIS MORNING TO 6 PM CDT THIS EVENING
FOR TXZ251>255-351-354-355.
GM...NONE.
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