textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 615 AM CDT Tue Apr 7 2026

Key Messages:

* Below normal temperatures will continue tonight and Tuesday before a warming trend develops through the rest of the week.

* A series of upper level disturbances will lead to low to moderate (30-60 percent) chance of showers and thunderstorms each day Wednesday through Saturday.

* A High Risk of Rip Currents will continue overnight before becoming a moderate risk on Tuesday and Tuesday night.

DISCUSSION

Issued at 1030 PM CDT Mon Apr 6 2026

A nearly Zonal flow aloft with a series of embedded shortwave disturbances are expected to move though Deep South Texas by mid- week. Rain chances (10 to 20 percent) start to increase late Tuesday night near the coast. There is a low to moderate (20 to 40 percent) rain showers Wednesday into Wednesday night. A more potent shortwave swings through the area Thursday into Friday. This will lead to a moderate (40 to 60 percent) chance of rain showers and thunderstorms on Thursday into Friday. Rain chances linger into Saturday with low (20 to 30 percent) chance of showers and thunderstorms. Dry conditions look to return Sunday into Tuesday.

Another cool night is expected across the area tonight with overnight lows dropping into the 50s, except the 60s along the beaches. Below normal temperatures will continue on Tuesday with highs reaching the upper 70s to the lower 80s at most locations. Near normal temperatures are expected for Tuesday night with lows falling into the 60s area wide. Temperatures will steadily warm through the rest of the week and into the weekend as the onshore flow continues.

There is a high risk of life-threatening rip currents at area beaches overnight with a moderate risk on Tuesday and Tuesday night.

AVIATION

(12Z TAFS) Issued at 615 AM CDT Tue Apr 7 2026

VFR conditions prevail through the TAF cycle. Light westerly winds shift east-northeast through the day, becoming light and variable overnight. Low clouds Tuesday night begin to build and may bring MVFR conditions, kept as SCT due to uncertainty.

MARINE

Issued at 1030 PM CDT Mon Apr 6 2026

Light to moderate northeast winds and sea heights between 3 to 5 feet prevail along the Lower Texas Coast late this evening. Conditions will continue to improve overnight with favorable conditions expected Tuesday through late week. Slightly adverse to adverse conditions will be possible by the weekend as the pressure gradient strengthens. Elevated winds and seas may lead to exercise caution to low-end Small Craft Advisory conditions as early as Friday night on the Gulf waters. There is a low (20 to 30 percent) chance of rain Tuesday night through Wednesday night and a moderate (30 to 60 percent) rain/thunderstorm chance Thursday through Saturday.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 78 66 80 68 / 10 30 40 30 HARLINGEN 80 62 81 65 / 10 20 30 30 MCALLEN 83 66 83 69 / 10 20 40 30 RIO GRANDE CITY 82 63 82 68 / 0 20 40 40 SOUTH PADRE ISLAND 75 70 76 72 / 20 20 30 30 BAYVIEW/PORT ISABEL 78 66 80 68 / 10 20 30 30

BRO WATCHES/WARNINGS/ADVISORIES

TX...High Rip Current Risk until 7 AM CDT this morning for TXZ451-454- 455.

GM...None.