textproduct: Brownsville/Rio Grande Valley

KEY MESSAGES

Updated at 1242 AM 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 1047 PM CDT Mon Mar 23 2026

High pressure dominates Deep South Texas through the remainder of the week, with well-above normal temperatures and no chance of rain. A frontal boundary runs south Friday night into Saturday, briefly dropping temperatures towards normal and bringing a very low (15 percent) chance of rain just along the Rio Grande into early Saturday afternoon.

Patchy fog develops overnight tonight, with conditions improving shortly after sunrise Tuesday. Expect the typical afternoon breeze Tuesday through Friday and RH values below 30 percent along and west of US281/I69C. Fire Danger Statements may be needed, but no Red Flag conditions are expected at this time, with the lowest moisture being generally west of the stronger winds until the evening hours, when humidity is recovering.

The entire region remains primed for wildfires and burn bans are in effect across all of Deep South Texas, except Kenedy County. CPC is still holding onto an above normal precipitation outlook in both 6 to 10 (40-50 percent) and 8 to 14 days (50-60 percent), taking us into the first full week of April.

AVIATION

(06Z TAFS) Issued at 1242 AM CDT Tue Mar 24 2026

Light southeast winds and mostly clear skies prevail across Deep South Texas early this morning. Patchy fog and low stratus may develop towards daybreak. Will include TEMPO's for all aerodromes between 10-14Z due to MVFR/IFR conditions. Otherwise, VFR conditions are expected for the next 24 hours.

MARINE

Issued at 1047 PM CDT Mon Mar 23 2026

Southeasterly winds persist through the week with generally favorable marine conditions. Afternoon breezes across the bay may occasionally kick up a moderate chop or brief Small Craft Caution gusts. Northeasterly winds arrive with a frontal boundary late Friday night into Saturday afternoon, before dropping back to onshore easterly Sunday and southeasterly Monday.

PRELIMINARY POINT TEMPS/POPS

BROWNSVILLE 86 68 86 67 / 0 0 0 0 HARLINGEN 88 64 90 64 / 0 0 0 0 MCALLEN 93 69 94 68 / 0 0 0 0 RIO GRANDE CITY 93 66 94 66 / 0 0 0 0 SOUTH PADRE ISLAND 77 70 78 70 / 0 0 0 0 BAYVIEW/PORT ISABEL 83 66 84 66 / 0 0 0 0

BRO WATCHES/WARNINGS/ADVISORIES

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