textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 622 PM CDT Tue Mar 24 2026

Key Messages:

- Above normal temperatures and dry conditions persist through the week. - Ongoing drought and abundant cured fuels continue to drive an elevated wildfire threat across Deep South Texas.

DISCUSSION

Issued at 1245 PM CDT Tue Mar 24 2026

The main weather story across Deep South Texas will be the above normal warmth, rain-free conditions, and daily elevated fire weather concerns as the region remains under the influence of mid level high pressure. The combination of light surface winds and sufficient low level moisture will result in patchy fog and/or stratus clouds tonight once again. Any fog should dissipate by mid to late morning tomorrow. Otherwise, high temperatures will range from 5-10 degrees above normal for late March, with daily highs ranging from the upper 80s along/east of I-69E and low to mid 90s further inland. Low temperatures will fall around 5 degrees above normal for late March, mostly in the mid to upper 60s. In combination with dry fuels, lack of rainfall, and occasionally gusty winds, elevated fire weather concerns will continue through the end of the week.

A weak cold front will approach the region by the end of the week and into the weekend, which will allow for high temperatures to fall into the mid 80s his weekend. Looking ahead into the start of April, the CPC 6-10 Day and 8-14 Day Precipitation Outlooks continue to highlight a potential pattern change with a 40-50% chance (6-10 day) and 50-60% (8-14 day) chance of above normal precipitation.

AVIATION

(00Z TAFS) Issued at 622 PM CDT Tue Mar 24 2026

VFR conditions are generally expected through the TAF period, with patchy fog overnight setting up MVFR to isolated IFR conditions where any fog becomes more dense. Southeasterly gusts diminish quick this evening, returning Wednesday afternoon.

MARINE

Issued at 1245 PM CDT Tue Mar 24 2026

Generally favorable marine conditions are expected over the Gulf waters and Laguna Madre with low to moderate seas and light to moderate winds. There may be brief periods of Small Craft Exercise Caution conditions each afternoon due to a locally enhanced pressure gradient. A weak cold front arrives this weekend.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 67 86 67 85 / 0 0 0 0 HARLINGEN 64 90 64 88 / 0 0 0 0 MCALLEN 69 93 69 93 / 0 0 0 0 RIO GRANDE CITY 66 94 66 93 / 0 0 0 0 SOUTH PADRE ISLAND 70 77 70 78 / 0 0 0 0 BAYVIEW/PORT ISABEL 66 85 66 84 / 0 0 0 0

BRO WATCHES/WARNINGS/ADVISORIES

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