textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 530 AM CST Tue Dec 30 2025

- Dangerous surf conditions will continue overnight into Tuesday. A High Risk of Rip Currents and a High Surf Advisory remains in effect until 6 PM Tuesday.

- Hazardous marine conditions are likely along portions of the Lower Texas Coast through Tuesday. A Small Craft Advisory is in effect tonight on the Laguna Madre and tonight into Tuesday on the Gulf waters.

- A warming trend begins on Wednesday which will continue through the weekend.

DISCUSSION

Issued at 1027 PM CST Mon Dec 29 2025

Moderate north winds late this evening are expected to decrease overnight as surface high pressure builds into the region. The lingering cloud cover and slightly elevated winds should allow low temperatures overnight to fall into the mid to upper 40s, except the 50s at the beaches. High pressure settles across South Texas on Tuesday as light to moderate north winds continue. Mostly cloudy and cool on Tuesday with highs in the lower 60s. Tuesday night will be the coldest night of the week. Light winds and clear skies should support good radiational cooling. Low temperatures Tuesday night are expected to range from the upper 30s/lower 40s across the Northern Ranchlands to the lower/middle 40s for the populated portions of the Rio Grande Valley and the lower 50s at the beaches.

A warming trend starts Wednesday into Wednesday night as surface high pressure slides eastward and the southeast flow returns. Wednesday will be mild with highs in the upper 60s to the lower 70s under mostly sunny skies. High temperatures will slowly warm into the lower 80s on Thursday, the mid to upper 80s by Friday and continuing through the weekend. Lows will recover into the upper 50s/lower 60s by Thursday night and continue through the weekend. No rainfall is expected through the period.

There is a high risk of life-threatening rip currents at area beaches that is expected to continue through Tuesday due to elevated winds and surf. Also, a High Surf Advisory remains in effect until 6 PM Tuesday.

AVIATION

(12Z TAFS) Issued at 530 AM CST Tue Dec 30 2025

VFR will occur at the aerodromes through the next 24 hours, with clearing skies and diminishing winds.

MARINE

Issued at 1027 PM CST Mon Dec 29 2025

Hazardous conditions will continue tonight into Tuesday. Observed winds along the Lower Texas Coast late this evening are between 15 to 25 knots, with some gusts around 30 knots over the Gulf waters. Sea heights between 8 to 14 feet should continue overnight on the Gulf waters. Therefore, Small Craft Advisories are in effect for the Laguna Madre until 6 AM Tuesday and the Gulf waters until 6 PM Tuesday. Conditions are expected to continue to improve and become favorable by Tuesday night and remain favorable with light to moderate winds and seas expected through the remainder of the week.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 61 45 69 52 / 0 0 0 0 HARLINGEN 61 41 69 49 / 0 0 0 0 MCALLEN 63 45 71 52 / 0 0 0 0 RIO GRANDE CITY 63 42 71 47 / 0 0 0 0 SOUTH PADRE ISLAND 60 54 66 60 / 0 0 0 0 BAYVIEW/PORT ISABEL 60 45 68 53 / 0 0 0 0

BRO WATCHES/WARNINGS/ADVISORIES

TX...High Rip Current Risk through this afternoon for TXZ451-454-455.

High Surf Advisory until 6 PM CST this evening for TXZ451-454- 455.

GM...Small Craft Advisory until 6 AM CST early this morning for GMZ130-132-135.

Small Craft Advisory until 6 PM CST this evening for GMZ150-155- 170-175.