textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 611 PM CDT Mon Jul 27 2026

- Rain free conditions will prevail through next weekend.

- Temperatures and heat indices in the triple digits will lead to generally a major heat risk this week. Heat Advisories may be needed, especially later in the week.

- A moderate risk of rip currents along the lower Texas beaches through Tuesday.

DISCUSSION

Issued at 116 PM CDT Mon Jul 27 2026

Hot and rain free conditions will continue through the forecast period thanks to upper-level ridging centered over the Central Plains.

Heat will be the main focus this week as afternoon temperatures will rise into the upper 90s along the coast to the 100s inland. Heat index values are forecast to generally peak around 110-115 degrees each afternoon. Have held of on a Heat Advisory for Tuesday as current forecast indicates we will remain just shy of criteria. However, Heat Advisories will become increasingly likely as the week progresses, primarily across the coastal counties and the Rio Grande Valley.

The combination of high afternoon temperatures and humidity will lead to a Major Heat Risk (level 3 of 4) across most of Deep South Texas this week. Later this week portions the Rio Grande Valley into the coastal counties may see an Extreme Heat Risk (level 4 of 4).

At area beaches there is a moderate risk of rip currents through Tuesday.

AVIATION

(00Z TAFS) Issued at 611 PM CDT Mon Jul 27 2026

Through 00z Wednesday....VFR conditons are expected to prevail through the 00z TAF cycle.

Winds will remain breezy out of the southeast through the 00z TAF period with speeds between 10-20 kts and gusts as high as 30 kts.

MARINE

Issued at 116 PM CDT Mon Jul 27 2026

An enhanced pressure gradient along the will result in daily Small Craft Exercise Caution conditions along the Laguna Madre and nearshore Gulf waters. Otherwise, expect light to moderate southeasterly winds with 3 to 4 ft seas and 4 to 6 second periods.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 81 96 82 97 / 0 0 0 0 HARLINGEN 78 99 79 100 / 0 0 0 0 MCALLEN 80 102 81 103 / 0 0 0 0 RIO GRANDE CITY 78 104 80 104 / 0 0 0 0 SOUTH PADRE ISLAND 81 88 82 89 / 0 0 0 0 BAYVIEW/PORT ISABEL 79 95 80 95 / 0 0 0 0

BRO WATCHES/WARNINGS/ADVISORIES

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