textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 1217 AM CDT Wed Mar 11 2026

Key Messages:

* Fire Danger Statement (RFD) has been issued for all of Deep South Texas with the exception of the barrier islands on Wednesday from Noon to 7 PM CDT.

* Fire weather concerns are expected to continue through early next week.

* Record to near record-breaking high temperatures are possible on Wednesday and again on Sunday.

DISCUSSION

Issued at 1110 PM CDT Tue Mar 10 2026

The passage of a cold front tonight into Wednesday morning will bring drier air to the region. While winds are forecast to shift westerly to northwesterly Wednesday morning in the wake of the front, the combination of compressional heating from air descending off the Sierra Madre, increased sunshine, and the lower specific heat of the dry air will likely result in afternoon temperatures slightly warmer than they were Tuesday. High temperatures will likely peak in the mid to upper 90s.

A second, stronger cold front will likely move through the area Wednesday night, resulting in stronger northerly winds and slightly cooler temperatures Thursday, with highs in the mid to upper 70s. Winds will likely shift back to the southeast Friday, allowing temperatures to climb back into the 90s this weekend.

Another cold front Sunday night into Monday morning will likely bring more seasonable temperatures to begin the new work week.

AVIATION

(06Z TAFS) Issued at 1217 AM CDT Wed Mar 11 2026

MVFR to VFR will prevail at the aerodromes through the next 24 hours. The approach and passage of a cold front will produce generally veering and diminishing winds with clearing skies and no precipitation.

MARINE

Issued at 1110 PM CDT Tue Mar 10 2026

Hazardous marine conditions will continue tonight with conditions improving Wednesday morning. While favorable conditions will be likely through the day Wednesday, another cold front Wednesday night will likely bring strong northerly winds Thursday morning, which will likely require another Small Craft Advisory for the Laguna Madre and Gulf waters.

Conditions will likely improve again by Thursday evening, with generally favorable conditions continuing through the weekend. Another cold front Monday may bring an additional round of adverse to hazardous conditions early next week.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 63 75 53 82 / 0 0 0 0 HARLINGEN 57 77 49 83 / 0 0 0 0 MCALLEN 60 80 53 86 / 0 0 0 0 RIO GRANDE CITY 59 78 48 86 / 0 0 0 0 SOUTH PADRE ISLAND 63 70 61 73 / 0 0 0 0 BAYVIEW/PORT ISABEL 60 73 54 80 / 0 0 0 0

BRO WATCHES/WARNINGS/ADVISORIES

TX...None. GM...Small Craft Advisory until 1 AM CDT early this morning for GMZ130-132-135-150-155.

Small Craft Advisory until 7 AM CDT this morning for GMZ170-175.