textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 1211 PM CDT Fri Aug 14 2026

- Slightly above normal temperatures continue through the forecast period.

- Low rain chances (around 20% or less) expected today, with generally rain-free conditions returning this weekend into next week.

- The combination of breezy and mostly dry weather coinciding with low afternoon minimum relative humidity values brings a continued risk of fire weather into next week.

- Elevated risk of rip currents at the local beaches.

DISCUSSION

Issued at 1211 PM CDT Fri Aug 14 2026

Hot temperatures will continue across Deep South Texas through the forecast period with generally rain free conditions under upper level ridging. Temperatures each day will rise into the upper 90s to low 100s with head indices between 105-110F expected. While we look to remain just shy of Heat Advisory criteria each day, a few locations may briefly exceed 111F. Will continue to monitor for the need of Heat Advisories. There is a Moderate (level 2 of 4) to Major (level 3 of 4) Heat Risk every afternoon into next week.

While dry conditions will prevail, there does remain a low chance (less than 20%) of an isolated shower or thunderstorm through early this evening, mainly along the sea breeze. Can not rule out any isolated sea breeze activity through the remainder of the period.

The combination of breezy conditions, lower RH values, and abnormally dry conditions, there will be the potential for rapid wildfire spread into next week. While we will look to fall shy of and Red Flag Warnings or Fire Danger Statements, outdoor burning is not recommended.

A moderate risk of life-threatening rip currents continues tonight through Saturday afternoon.

AVIATION

(18Z TAFS) Issued at 1211 PM CDT Fri Aug 14 2026

VFR conditions will prevail across all aerodromes. Breezy southeasterly winds will be around 20 kts today with gusts up to 30 kts. Wind will decrease later this evening and overnight.

MARINE

Issued at 1211 PM CDT Fri Aug 14 2026

An enhanced pressure gradient along the immediate coast will result in periodic daily Small Craft Exercise Caution conditions along the Laguna Madre. Otherwise, expect moderate southeasterly winds with 2 to 4 ft seas and 5 to 6 second periods.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 82 96 80 96 / 0 0 10 10 HARLINGEN 79 99 77 98 / 0 0 10 20 MCALLEN 82 103 81 102 / 0 0 0 20 RIO GRANDE CITY 80 103 78 102 / 0 0 0 10 SOUTH PADRE ISLAND 82 89 81 89 / 0 0 10 10 BAYVIEW/PORT ISABEL 80 95 79 94 / 0 0 10 10

BRO WATCHES/WARNINGS/ADVISORIES

TX...None. GM...None.