textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 1240 PM CDT Sun May 31 2026

* Seasonable temperatures continue today and tomorrow.

* Medium rain chances return for the majority of the work week.

* Moderate to High risk of rip currents possible along the Lower Texas Coast.

DISCUSSION

Issued at 1240 PM CDT Sun May 31 2026

The rest of today and tomorrow are expected to be rain-free with seasonal temperatures. A week area of low pressure is expected to move into the Bay of Campeche. This will result in a influx of tropical moisture that could provide some fuel for the development of showers and thunderstorms through the majority of the week. With a frontal boundary expected to stall out over the Northern Gulf Coast as well during the work week, which will aid in the development of showers and thunderstorms. The highest chances for showers and thunderstorms are expected to occur during the afternoons during the work week around medium chance (40-50%) Tuesday through Friday. Some of these showers and thunderstorms could produce some heavy downpours as PWATs are near 2 inches for the period. A tradeoff with the showers, thunderstorms, and the general cloud coverage is that high temperatures should be a little cooler during the work week.

By the start of the weekend, mid-level ridge could move over Deep South Texas and the Rio Grande Valley. This will result in the chances of rain to drop to low (less than 30%) for Saturday and then very low (less than 10%) for Sunday. It will also mean that warmer temperatures will return as well.

A moderate risk of rip currents is in place along the Lower Texas Coast and is expected to remain in place with the elevated easterly fetch and swell for the next several days. It is also possible that a High Risk of Rip Currents could also occur as well during this period.

AVIATION

(18Z TAFS) Issued at 1240 PM CDT Sun May 31 2026

Generally VFR conditions should persist through the afternoon and early evening hours. However, low-level clouds are expected to move through the region during the overnight hours resulting in MVFR conditions. By mid-morning, VFR ceiling should return as daytime mixing occurs. Light southeasterly winds are expected to continue through the period as well.

MARINE

Issued at 1240 PM CDT Sun May 31 2026

Gentle to moderate onshore flow and low moderate seas are expected through the period. However, showers and thunderstorms remain possible for the period as well, thus it is possible that these showers and thunderstorms could produce locally elevated winds and seas. Some of these showers and thunderstorms could be capable of producing heavy downpours that could reduce visibilities as well.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 79 92 79 90 / 10 10 10 30 HARLINGEN 76 91 75 90 / 10 20 10 40 MCALLEN 79 95 78 93 / 0 20 10 30 RIO GRANDE CITY 77 96 77 94 / 0 0 10 10 SOUTH PADRE ISLAND 82 85 81 85 / 10 10 10 20 BAYVIEW/PORT ISABEL 79 89 78 88 / 10 10 10 30

BRO WATCHES/WARNINGS/ADVISORIES

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