484
FXUS64 KBRO 182313 AAA
AFDBRO
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
513 PM CST SUN JAN 18 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 510 PM CST SUN JAN 18 2026
- A WARMING TREND BEGINS TODAY.
- RAIN CHANCES RETURN TUESDAY INTO WEDNESDAY.
- A COLD FRONT WILL MOVE THROUGH DEEP SOUTH TEXAS NEXT WEEKEND.
DISCUSSION
ISSUED AT 1110 AM CST SUN JAN 18 2026
A WARMING TREND WILL BEGIN TODAY AS HIGH PRESSURE BUILDS ACROSS THE
REGION. TEMPERATURES WILL CLIMB INTO THE 60S THIS AFTERNOON WITH
LIGHT NORTHERLY WINDS TURNING SOUTHEASTERLY OVERNIGHT. DRY AIR
WILL REMAIN IN PLACE AND WHILE HUMIDITY LEVELS WILL BE IN THE
TEENS, LIGHT WINDS WILL LIMIT ANY FIRE WEATHER CONCERNS.
TEMPERATURES WILL CONTINUE TO WARM THROUGH THE WEEK WITH AFTERNOON
REACHING THE 70S ON MONDAY AND THE 80S BY LATE WEEK.
A MID/UPPER LEVEL SHORTWAVE WILL MOVE EAST OVER NORTHERN MEXICO INTO
THE SOUTHERN US MIDWEEK BRINGING RAIN CHANCES BACK TO DEEP SOUTH
TEXAS TUESDAY INTO WEDNESDAY AS A WEAK BOUNDARY MOVES THROUGH AND
A COASTAL TROUGH DEVELOPS. WEDNESDAY WILL BE THE BEST CHANCE OF
SEEING ANY RAIN ACROSS THE REGION WITH A 20-50% CHANCE (HIGHEST
NEAR THE COAST). AS WE HEAD INTO THE WEEKEND ANOTHER COLD FRONT
WILL MOVE THROUGH DEEP SOUTH TEXAS LATE SATURDAY/EARLY SUNDAY WITH
TEMPS CLOSER TO SEASONAL NORMS.
AVIATION
(00Z TAFS)
ISSUED AT 510 PM CST SUN JAN 18 2026
VFR CONDITIONS ARE FORECAST TO CONTINUE THROUGH THE PERIOD. CLEAR
TO MOSTLY CLEAR SKIES AND LIGHT AND VARIABLE WINDS WILL LIKELY
CONTINUE INTO MONDAY, WITH WINDS BECOMING SOUTHEASTERLY AT 5-10
KNOTS AROUND NOON.
MARINE
ISSUED AT 1110 AM CST SUN JAN 18 2026
FAVORABLE MARINE CONDITIONS WILL RETURN THIS AFTERNOON/EVENING ON
THE WATERS OFF THE LOWER TEXAS COAST. A TIGHTENING PRESSURE
GRADIENT TUESDAY COULD WARRANT SMALL CRAFT CAUTION ON THE OFFSHORE
WATERS. A BOUNDARY WILL MOVE THROUGH MIDWEEK WITH A COASTAL
TROUGH DEVELOPING WHICH WILL BRING RAIN CHANCES TUESDAY THROUGH
THURSDAY. OTHERWISE, LIGHT WINDS AND WAVE HEIGHTS OF 3 TO 5 FEET
WILL PREVAIL.
PRELIMINARY POINT TEMPS/POPS
BROWNSVILLE 45 71 59 73 / 0 0 0 20
HARLINGEN 39 73 54 73 / 0 0 0 20
MCALLEN 41 75 57 74 / 0 0 0 20
RIO GRANDE CITY 35 75 54 71 / 0 0 0 20
SOUTH PADRE ISLAND 53 68 62 70 / 0 0 10 30
BAYVIEW/PORT ISABEL 45 70 57 72 / 0 0 0 20
BRO WATCHES/WARNINGS/ADVISORIES
TX...HIGH RIP CURRENT RISK UNTIL 6 PM CST THIS EVENING FOR TXZ451-454-
455.
GM...NONE.
SHORT TERM...68
LONG TERM....68
AVIATION...60-BE
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