textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Issued at 1215 PM CST Mon Nov 9 2026

- Potential for nuisance flooding across the Lower Rio Grande Valley continues through Tuesday night.

- Near to below normal temperatures are expected through the week due to increased cloud cover rain chances.

- High Risk of Rip Currents continues through this evening along the Lower Texas beaches.

DISCUSSION

Issued at 1215 PM CST Mon Nov 9 2026

Unsettled weather will continue through mid week across Deep South Texas as an upper level low centered over the west continues to translate across the state, maintaining near daily low to medium precipitation chances and near normal temperatures. Rain chances will linger through Wednesday, but should be generally confined to around 20% or less inland, with better rain chances (30-40%) along the immediate coast and Gulf waters. Overall, total rainfall accumulations from tonight through Wednesday should be fairly lower, generally less than an inch. However, isolated pockets of higher amounts closer to 1-2 inches cannot be ruled out as moisture content remains high. The main threat through Wednesday is the potential for nuisance flooding, especially given the recent rainfall received across portions of the region.

Temperatures are expected to remain near or slightly below normal for mid November due to increased cloud cover and continued rain chances. Expect highs to range from the low 70s to low 80s each afternoon, with lows ranging from the upper 50s to upper 60s. Guidance indicates another cold front may approach Deep South Texas late this week, which may result in another round of showers and storms and continued seasonable temperatures.

AVIATION

(18Z TAFS) Issued at 1215 PM CST Mon Nov 9 2026

Poor flying conditions are expected through the forecast period as unsettled weather continues across much of the region. Expect rounds of light to moderate showers, mainly along the immediate coast, through tomorrow morning. An isolated thunderstorm cannot be ruled out, with the primary threat being occasional lightning and gusty winds. Otherwise, expect low ceilings (IFR/LIFR) to continue through much of the period with brief periods of improvement to MVFR possible tonight into tomorrow.

MARINE

Issued at 1215 PM CST Mon Nov 9 2026

Small Craft Exercise Caution conditions continue along the Laguna Madre and Gulf waters through tonight. Conditions should become favorable by Tuesday and continue through mid week. However, an approaching cold front may bring adverse marine conditions late this week once again. Otherwise, precipitation chances continue through mid week, before becoming rain-free through the first half of the weekend.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 70 79 70 81 / 60 50 20 30 HARLINGEN 67 78 67 80 / 60 40 20 30 MCALLEN 67 78 70 80 / 70 30 30 10 RIO GRANDE CITY 62 75 64 79 / 70 40 20 10 SOUTH PADRE ISLAND 72 77 72 77 / 70 70 20 50 BAYVIEW/PORT ISABEL 68 78 68 80 / 70 70 20 40

BRO WATCHES/WARNINGS/ADVISORIES

TX...High Rip Current Risk until 6 PM CST this evening for TXZ451-454- 455.

GM...None.