textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 1208 PM CDT Sun Mar 29 2026

Key Messages:

* Above normal temperatures continue through the week.

* Rain chances may return to the coast Tuesday.

* Ongoing drought and very dry grass/brush mean wildfires can start easily. Use caution with outdoor activities. Fire Danger Statements may be necessary at times.

DISCUSSION

Issued at 1208 PM CDT Sun Mar 29 2026

High pressure will build across the mid-Atlantic through the week maintaining onshore flow. A weak trough over Mexico will maintain a low chance (10-30%) of POPs today in the low to mid-Valley. Have seen a few brief light showers pop up here and there this morning, and will likely remain the case through the afternoon. Dry conditions will prevail through much of the week, though a weak disturbance overhead Tuesday could bring some showers to the coast. As we head into this weekend, another front may move through Deep South Texas, again bringing low rain chances along the coast.

Temperatures will remain above normal through the the week, but a cold front this weekend could drop temperatures near or below normal by early next week.

While winds and humidity levels fall shy of any Red Flag/Fire Danger Statements, will be monitoring the situation closely for potential issuance. Ongoing drought with critical to extremely dry fuels could lead to rapid wildfire growth if ignited. Burn bans are in effect for Cameron, Hidalgo, Willacy, Brooks, Jim Hogg, Zapata, and Starr counties.

AVIATION

(18Z TAFS) Issued at 1208 PM CDT Sun Mar 29 2026

VFR conditions are expected at all aerodromes through much of the TAF period. BKN to OVC skies will lower at MFE near daybreak with MVFR expected through sunrise before lifting. Winds will remain elevated this afternoon all all sites and at HRL and MFE through this evening into the overnight.

MARINE

Issued at 1208 PM CDT Sun Mar 29 2026

Generally favorable marine conditions are expected on the waters off the lower Texas coast with wave heights of 3 to 5 ft and 6 to 7 second periods. Could see some caution conditions each afternoon, mainly on the Laguna Madre.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 67 85 69 86 / 0 0 10 20 HARLINGEN 63 89 66 90 / 0 0 0 20 MCALLEN 68 91 70 94 / 0 0 0 10 RIO GRANDE CITY 66 92 67 94 / 0 0 0 10 SOUTH PADRE ISLAND 71 78 72 78 / 0 0 10 20 BAYVIEW/PORT ISABEL 66 84 68 85 / 0 0 10 20

BRO WATCHES/WARNINGS/ADVISORIES

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