textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 614 AM CDT Fri Jul 24 2026

- Hot and rain free conditions return Friday. - Moderate Heat Risk through the weekend.

- A Moderate Risk of Rip Currents at area beaches Friday.

DISCUSSION

Issued at 1053 PM CDT Thu Jul 23 2026

As the sheared off moisture from Bertha moves out of the area tonight hot and rain free conditions are forecast to return across Deep South Texas through the period. The upper level high pressure system over North Texas looks to remain in place through the forecast, continuing to support broad subsidence and weak mid level flow. Clear skies will likely return by Friday afternoon as the last of the mid-level tropical moisture moves out of the area.

Heat will continue to be a concern through the period. High temperatures are forecast to range from the upper 90s to around 100 degrees through the weekend, increasing to 100-105 degrees early next week. Heat index values will likely peak between 105-108 Friday and Saturday afternoon, and around 110 Sunday afternoon. Heat Advisories aren't likely through the weekend, though a Moderate Heat Risk will likely persist across the area. Heat indices are forecast to increase early next week, especially across the coastal counties where moisture advection from the coast combines with higher temperatures to push heat index values back up to the 110-114 range. Heat Advisories may be needed each afternoon beginning Monday, with Moderate to Major Heat Risk across the area.

AVIATION

(12Z TAFS) Issued at 614 AM CDT Fri Jul 24 2026

VFR will prevail at the aerodromes through the next 24 hours. Clearing skies will occur as the remnants of Tropical Cyclone Bertha move farther west. Breezy winds during daylight hours will be much lighter at night.

MARINE

Issued at 1053 PM CDT Thu Jul 23 2026

Adverse marine conditions will likely continue through Friday evening along the Gulf waters and Laguna Madre with southerly to southeasterly winds around 15-20 knots along the coast. Winds speeds are forecast to decrease Friday night as pressure gradients weaken allowing favorable marine conditions to return through the weekend. Wind speeds along the coast could increase again early next week, possibly requiring additional Small Craft Should Exercise Caution headlines.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 95 79 96 79 / 0 10 0 0 HARLINGEN 97 76 97 75 / 0 0 0 0 MCALLEN 100 79 102 78 / 0 0 0 0 RIO GRANDE CITY 100 77 100 77 / 10 0 0 0 SOUTH PADRE ISLAND 88 81 88 81 / 0 0 0 0 BAYVIEW/PORT ISABEL 94 78 93 78 / 0 0 0 0

BRO WATCHES/WARNINGS/ADVISORIES

None.