textproduct: Corpus Christi

KEY MESSAGES

Updated at 228 PM CDT Thu Apr 30 2026

- Marginal (1 of 5) Severe Weather Risk for northern half of S TX tonight and most of S TX Friday through Friday night.

- Marginal to Slight (1-2 of 4) Risk of Excessive Rainfall Friday through Friday night.

- Gale Watch Friday evening through Saturday morning Small Craft Advisory through Saturday afternoon or evening.

- Wind Advisory possible Friday afternoon and evening.

- Minor Coastal Flooding possible Saturday.

- Moderate Rip Current Risk Friday and possibly through Saturday.

DISCUSSION

Issued at 228 PM CDT Thu Apr 30 2026

Multiple hazards expected tonight through Saturday night due to a cold front moving through S TX Friday/Friday night.

A mid/upper level short wave coincident with the cold front and abundant moisture will be conducive for a couple of rounds of scattered to numerous showers and thunderstorms. Tonight, there is a marginal risk of severe storms generally from Encinal to Victoria and northward. The marginal risk of severe storms expands to include most of S TX, except along the Rio Grande, Friday through Friday night associated with the FROPA. Confidence is moderate for severe weather on Friday due to strong low level moisture convergence, moderate instability, diffluence aloft, strong PVA and lift. The caveat will be whether the strong capping inversion erodes sufficiently to allow convective development. The main threat is expected to be large hail and damaging winds. There is a very low chance of a tornado.

There is a marginal to slight risk of excessive rainfall Friday through Friday night. The slight risk is generally from Tilden to Rockport and northward. The rainfall will be beneficial, but could produce localized flooding of low lying areas, urban areas, creeks and streams. The front and associated storms are expected to move through the region fairly quickly, thus widespread flooding is not anticipated. That could change if the front slows down.

Rain chances diminish and skies clear from northwest to southeast behind the cold front Friday evening through the night. Cooler temperatures with highs in the 70s and lows in the 50s are expected in the wake of the cold front. Then a warming trend begins Sunday with moderate heat risk by Tuesday.

Strong north to northeast winds develop behind the cold front Friday afternoon through Saturday morning. Winds could gusts up to 40 mph, but the duration is uncertain. If it lasts more than 2 hours, it will warrant a Wind Advisory across mainly eastern portions of S TX beginning Friday afternoon. In addition, frequent gusts to gale force is expected across the marine zones, thus a Gale Watch is in effect from Friday evening through Saturday morning.

Minor coastal flooding is possible behind the cold front Friday night into Saturday during high tide. This is due to a strong northeast flow across the gulf waters, seas building to 10-13ft, and swell periods increasing to around 8 seconds. As for rip currents, there is a moderate risk Friday, but could become moderate to high Friday night through Saturday night.

AVIATION

(18Z TAFS) Issued at 228 PM CDT Thu Apr 30 2026

VFR conditions are expected through the afternoon. Tonight expect MVFR conditions to develop. Could see IFR/LIFR conditions late evening across mainly for LRD, COT areas, then ALI, CRP and VCT overnight into Friday due to showers and thunderstorms. Additional storms are expected through the day Friday and Friday evening as a cold front moves through S TX. A few storms may become strong to severe. Have included PROB30 groups with timing during the most likely occurrence.

MARINE

Issued at 228 PM CDT Thu Apr 30 2026

A gentle to moderate onshore flow (BF 3-4) will continue tonight through Friday ahead of a cold front. Winds will increase slightly to a more moderate flow Friday before shifting to the northeast and then increasing to strong to near gale (BF 6-7) Friday night through Saturday. A Gale Watch is in effect Friday evening through Saturday morning. Winds will gradually diminish to a moderate to fresh (BF 4- 5) Saturday night through Sunday before further weakening to gentle to moderate flow and turning east to southeast. A medium to high (30-70%) chance of showers and thunderstorms can be expected Friday through Friday night, then diminishing from northwest to southeast Saturday.

FIRE WEATHER

Issued at 228 PM CDT Thu Apr 30 2026

Relative humidity values will remain at or above 35% through the forecast period. Ahead and along a cold front, there is a medium to high rain chances tonight through Friday night, will limit fire weather concerns into early next week.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 73 84 56 74 / 20 60 30 10 Victoria 66 76 53 75 / 70 80 40 0 Laredo 72 84 57 75 / 50 50 10 0 Alice 72 85 56 77 / 30 60 30 0 Rockport 74 82 59 78 / 30 70 40 0 Cotulla 68 75 55 77 / 70 70 10 0 Kingsville 73 87 56 75 / 20 50 30 10 Navy Corpus 75 82 60 74 / 20 50 40 10

CRP WATCHES/WARNINGS/ADVISORIES

TX...None. GM...Gale Watch from Friday evening through Saturday morning for GMZ231-232-236-237-250-255-270-275.