538
FXUS64 KBRO 211710
AFDBRO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1210 PM CDT SAT MAR 21 2026
..NEW DISCUSSION, AVIATION, MARINE
KEY MESSAGES
UPDATED AT 1202 PM CDT SAT MAR 21 2026
KEY MESSAGES:
* ABOVE NORMAL TEMPERATURES WILL BE THE MAINSTAY.
* MAINLY DRY CONDITIONS EXPECTED THROUGH THE FORECAST PERIOD.
* ONGOING DROUGHT AND VERY DRY GRASS/BRUSH MEANS WILDFIRES CAN
START EASILY. USE CAUTION WITH OUTDOOR ACTIVITIES.
DISCUSSION
ISSUED AT 1202 PM CDT SAT MAR 21 2026
MID-LEVEL HIGH PRESSURE OVER THE DESERT SOUTHWEST INTO WESTERN TEXAS
WILL MAINTAIN WELL ABOVE NORMAL AFTERNOON TEMPERATURES (UPPER 80S TO
MID 90S) THROUGH THE PERIOD. OVERNIGHT LOWS WILL REMAIN IN THE 60S.
GENERALLY DRY CONDITIONS ARE EXPECTED WITH THE ONLY CHANCE OF RAIN
ON TUESDAY AFTERNOON (10-20%) ALONG THE COAST AND INTO THE MID
VALLEY DUE TO A WEAK MID-LEVEL DISTURBANCE IN THE WESTERN GULF.
A SOMEWHAT DRY AIRMASS WILL CONTINUE TO LIMIT HUMIDITY LEVELS WHICH
WILL MAINTAIN THE POTENTIAL FOR FIRE WEATHER CONCERNS AT TIMES. A
RANGELAND FIRE DANGER STATEMENT IS IN EFFECT FOR MUCH OF DEEP
SOUTH TEXAS TODAY. WHILE WINDS WILL REMAIN GENERALLY BELOW ANY RED
FLAG WARNING CRITERIA, THE ONGOING DROUGHT WITH CRITICAL TO
EXTREMELY DRY FUELS COULD LEAD TO RAPID WILDFIRE GROWTH IF
IGNITED. THE POTENTIAL FOR RANGELAND FIRE DANGERS STATEMENTS MAY
NEEDED PERIODICALLY THROUGH THE REMAINDER OF THE FORECAST PERIOD.
AVIATION
(18Z TAFS)
ISSUED AT 1202 PM CDT SAT MAR 21 2026
VFR CONDITIONS ARE EXPECTED THROUGH THE TAF PERIOD. SOUTHEASTERLY
WINDS WILL GUST UP TO AROUND 25 KTS THIS AFTERNOON BEFORE
DECREASING THIS EVENING.
MARINE
ISSUED AT 1202 PM CDT SAT MAR 21 2026
GENERALLY FAVORABLE MARINE CONDITIONS ARE EXPECTED ON THE
WATERS OFF THE LOWER TEXAS COAST WITH WAVE HEIGHTS AROUND 3 FT
AND 5 TO 6 SECOND PERIODS. COULD SEE SOME CAUTION CONDITIONS EACH
AFTERNOON, MAINLY ON THE LAGUNA MADRE, WITH A SLIGHTLY ENHANCED
AFTERNOON PRESSURE GRADIENT. ISOLATED SHOWERS ARE POSSIBLE ON
TUESDAY, MAINLY ACROSS THE NEARSHORE WATERS AND LAGUNA MADRE, BUT
CHANCES REMAIN LOW (10-20%).
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 65 85 65 86 / 0 0 0 0
HARLINGEN 61 90 61 89 / 0 0 0 0
MCALLEN 65 92 66 93 / 0 0 0 0
RIO GRANDE CITY 61 94 62 93 / 0 0 0 0
SOUTH PADRE ISLAND 69 77 69 78 / 0 0 0 0
BAYVIEW/PORT ISABEL 64 85 64 84 / 0 0 0 0
BRO WATCHES/WARNINGS/ADVISORIES
TX...NONE.
GM...NONE.
SHORT TERM...68
LONG TERM....68
AVIATION...68
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