textproduct: Corpus Christi

KEY MESSAGES

Issued at 611 AM CDT Wed Sep 9 2026

- Moderate to occasionally Extreme risk of heat-related impacts through the work week with an increased Extreme risk this weekend.

- Low to medium rain chances Wednesday through Friday, then low to very low chances by the weekend.

- Elevated Fire Weather Friday-Monday.

DISCUSSION

Issued at 149 AM CDT Wed Sep 9 2026

A mid level inverted trough of low pressure is forecast to move over S TX by Wednesday, which will provide mid/upper level support for convective development, mainly along the daily sea breeze. With the deeper moisture and the weakest capping inversion expected across the Victoria Crossroads, probabilities will be highest up to 60% with lower probabilities south and west. The lowest chance will be across the Rio Grande Plains. Rainfall totals Wednesday through Friday are expected to be generally less than 0.5 inch, but with PWATs of 2.0-2.3 inches, a few stronger storms may produce 1-2 inches. Rain chances are progged to decrease through the weekend as mid level ridging builds back across S TX.

With the ridge comes hotter temperatures and higher heat indices. An Extreme risk of heat related impacts are forecast across most of S TX by the weekend. Although, heat indices up to 113 may occur Wednesday and Thursday, it is expected to be isolated with short duration, thus Heat Advisories are less likely to be needed. However, by Friday and into the weekend the duration of heat indices of 110+ across a larger area may warrant daily Heat Advisories, possibly into early next week.

AVIATION

(12Z TAFS) Issued at 611 AM CDT Wed Sep 9 2026

VFR conditions mainly expected throughout the TAF period outside of showers/thunderstorms. There's a 60% chance of storms near VCT, 30% across CRP/ALI this morning and afternoon. Winds will be out of the southeast with occasional gusts to around 20KT.

MARINE

Issued at 149 AM CDT Wed Sep 9 2026

Light to gentle (BF 2-3) south to southeast flow expected through Thursday, becoming gentle to moderate by Friday and continuing through the weekend. An occasional fresh (BF 5) breeze south of Port Aransas is expected over the weekend. Seas 1-2 feet will increase to 2-4 feet this weekend. There will be low to medium rain chances through Friday.

FIRE WEATHER

Issued at 149 AM CDT Wed Sep 9 2026

Above normal moisture will continue to negate fire weather concerns through Thursday as minimum relative humidity stays above 30 percent along with light winds. Elevated Fire weather concerns increase across the Brush Country through the weekend with afternoon RH values dropping to around 25% and southeasterly winds gusting up to 25 mph. Rain chances increase over the Coastal Plains Wednesday and Thursday, then decrease through the weekend.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 94 78 96 78 / 30 10 20 0 Victoria 98 75 98 75 / 60 20 50 10 Laredo 103 78 102 79 / 10 10 0 10 Alice 99 74 100 75 / 30 0 10 0 Rockport 93 80 93 81 / 50 20 40 10 Cotulla 102 77 101 77 / 0 0 10 0 Kingsville 97 76 99 77 / 30 10 10 0 Navy Corpus 90 81 91 82 / 30 10 20 10

CRP WATCHES/WARNINGS/ADVISORIES

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