textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 512 PM CST Tue Dec 30 2025

- Surf conditions should improve by tomorrow, but there is still a moderate risk of life-threatening rip currents tonight.

- A Small Craft Advisory on the Gulf waters is expected to expire this evening, but Small Craft Exercise Caution conditions are expected to continue overnight.

- Patchy fog development is possible overnight starting on New Years Eve. This could possibly have an effect on late night New Year travel depending on how quickly temperatures cool and fog develops.

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

DISCUSSION

Issued at 1107 AM CST Tue Dec 30 2025

A warming trend that will continue throughout the week is expected to begin tomorrow, as mid-to-upper level ridging gains a stronger hold over Deep South Texas, skies begin to clear, and winds begin to shift back to a southeasterly direction. Tomorrow's high temperatures should warm into the lower 70s and continue warming until highs reach the mid 80s by Friday. High temperatures should remain in the mid-80s through the middle of next week as warm, dry weather continues for the area.

Tonight's low temperatures will get down into the mid-40s for most of Deep South Texas and possibly even the upper 30s for ares in the Northern Ranchlands. Tomorrow's low temperatures will stay in the 40s (but perhaps be a few degrees warmer than tonight), before more significant warming takes place on Thursday night when lows should warm to the upper 50s/lower 60s. By the weekend, lows should be back in the lower 60s and stay there through at least the middle of next week.

No precipitation is expected over the next week, but clear skies and light winds will support the overnight potential for patchy fog development over the next several days, beginning on New Years Eve. Generally, fog formation is most likely in the late overnight/very early morning hours at times of peak radiational cooling. However, if the temperatures decrease rapidly enough tomorrow night, patchy fog could form (particularly in the coastal counties) closer to midnight, which could potentially impact late-night New Year travels. Drivers will want to exercise caution if they happen to encounter any areas of patchy fog.

There is a moderate risk of life-threating rip currents at area beaches overnight, but surf conditions should improve tomorrow as the winds and wave heights continue to decrease.

AVIATION

(00Z TAFS) Issued at 512 PM CST Tue Dec 30 2025

Light to gentle northeasterly winds become light and variable overnight. Mainly clear skies and VFR conditions continue through the remainder of the TAF period with gentle northerly winds resuming Wednesday morning, becoming southeasterly to easterly in the afternoon.

MARINE

Issued at 1107 AM CST Tue Dec 30 2025

A Small Craft Advisory continues through this evening for the Gulf Waters, with continued Small Craft Exercise Caution conditions expected tonight. Marine conditions should then become favorable tomorrow, and continue to remain favorable through at least the middle of next week.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 44 70 53 78 / 0 0 0 0 HARLINGEN 40 70 48 80 / 0 0 0 0 MCALLEN 45 73 51 81 / 0 0 0 0 RIO GRANDE CITY 41 71 46 80 / 0 0 0 0 SOUTH PADRE ISLAND 55 67 60 74 / 0 0 0 0 BAYVIEW/PORT ISABEL 45 68 53 78 / 0 0 0 0

BRO WATCHES/WARNINGS/ADVISORIES

TX...High Rip Current Risk until 6 PM CST this evening for TXZ451-454- 455.

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

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