textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 632 AM CDT Tue Mar 17 2026

Key Messages:

* Warming temperatures through the week.

* Dry conditions expected through the forecast period.

* Adverse marine and coastal conditions expected into Tuesday morning.

DISCUSSION

Issued at 1013 PM CDT Mon Mar 16 2026

A quiet week is anticipated across Deep South Texas and the Rio Grande Valley as sfc high pressure over the region slowly moves eastward. Light to moderate southeasterly winds return Tuesday night and continue through the week. Temperatures will remain a little chilly on Tuesday with highs in the low to mid 70s, but temperatures will continue to climb through the week. By this weekend the upper 80s to mid 90s return. Tonight will be the coldest night with lows in the low 40s across the ranchlands to low 50s in the lower Valley. No rain is anticipated through the forecast period.

Humidity levels remain low for Tuesday, but winds will be much lighter. At this time will not be issuing any Fire Weather products. However, extremely dry fuels and D2-D4 drought conditions could lead to potential wildfires with any spark so outdoor burning is not recommended.

At local beaches, hazardous coastal/swimming conditions continue for the remainder of tonight. There is a High Surf Advisory and High Risk of Rip Currents through 7 AM Tuesday morning as well as a Coastal Flood Statement until 5 AM.

AVIATION

(12Z TAFS) Issued at 632 AM CDT Tue Mar 17 2026

Light north to northeast winds prevail across Deep South Texas early this morning. Light winds will become easterly and increase to 10 to 15 knots later this morning into the afternoon. Light southeast winds are expected later this evening and overnight. VFR conditions will continue for the next 24 hours.

MARINE

Issued at 1013 PM CDT Mon Mar 16 2026

Tonight, winds and seas will continue to decrease with favorable marine conditions returning on Tuesday. There is a Small Craft Advisory out for all waters off the lower Texas coast until 7 AM. Winds Tuesday though the end of the week will remain light to moderate with seas of 2 to 3 feet.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 71 55 79 59 / 0 0 0 0 HARLINGEN 72 50 82 56 / 0 0 0 0 MCALLEN 75 55 84 60 / 0 0 0 0 RIO GRANDE CITY 74 50 84 56 / 0 0 0 0 SOUTH PADRE ISLAND 66 60 72 65 / 0 0 0 0 BAYVIEW/PORT ISABEL 69 55 77 59 / 0 0 0 0

BRO WATCHES/WARNINGS/ADVISORIES

TX...High Rip Current Risk until 7 AM CDT this morning for TXZ451-454- 455.

High Surf Advisory until 7 AM CDT this morning for TXZ451-454- 455.

GM...Small Craft Advisory until 7 AM CDT this morning for GMZ150-155- 170-175.