textproduct: Corpus Christi

KEY MESSAGES

Updated at 120 AM CDT Fri May 1 2026

- Marginal (1 of 5) Severe Weather Risk for most of S TX today through tonight.

- Marginal to Slight (1-2 of 4) Risk of Excessive Rainfall today through tonight.

- Gale Warning Friday evening through Saturday morning, then Small Craft Advisory conditions through Saturday afternoon or evening.

- Wind Advisory in effect this evening.

- Minor Coastal Flooding possible Saturday.

- Moderate Rip Current Risk today through Saturday.

DISCUSSION

Issued at 120 AM CDT Fri May 1 2026

A mid/upper level short wave coincident with the cold front and abundant moisture will continue to lead to showers and thunderstorms. A marginal risk of severe storms will include most of South Texas, except along the Rio Grande, today and tonight. If we can break the cap or if storms move into the area, confidence is medium to high for severe weather today due to low level moisture convergence, moderate instability, diffluence aloft, strong PVA and lift. The main threats will be large hail and damaging winds. There is a very low chance of a tornado.

There is also a marginal to slight risk of excessive rainfall through tonight. The slight risk remains generally from Tilden to Rockport and northward. The rainfall will be beneficial, but we will need to watch for localized flash flooding with high rainfall rates. This will mainly affect low lying areas, urban areas, creeks and streams. Fortunately, the front and associated storms will move through the region fairly quickly, limiting the chances for widespread flooding.

Rain chances diminish and skies clear from northwest to southeast behind the cold front tonight. 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 northeasterly winds 20 to 30 mph with gusts up to 40 mph are expected behind the front, mainly along the coast, so have a Wind Advisory in effect tonight from 7 PM through 10 AM Saturday. Other areas could see wind gusts to 40 mph but, at this time, these gusts are not expected to last very long so have not included them in a Wind Advisory. In addition, frequent gusts to gale force is expected across the marine zones, so have issued the Gale Warning for this evening through Saturday morning.

Minor coastal flooding is possible behind the cold front tonight into Saturday during high tide as strong northeasterly flow develops over the gulf waters, seas build to 10-13 ft, and swell periods increase to around 8 seconds. We have also continued the moderate rip of rip currents for today through Saturday, but there is the potential that we will need to increase this to a high risk.

AVIATION

(06Z TAFS) Issued at 120 AM CDT Fri May 1 2026

Showers and thunderstorms are expected today as a cold front moves through South Texas. A few of these storms could be strong to severe, with hail as the greatest threat. MVFR conditions will prevail shortly, with periods of IFR/LIFR ceilings in and around any thunderstorms. Winds will shift to the north/northeast midday through the afternoon as the cold front surges south.

MARINE

Issued at 120 AM CDT Fri May 1 2026

A gentle to moderate onshore flow (BF 3-4) ahead of a cold front will increase slightly to a more moderate flow through today before shifting to the northeast and then increasing to strong to near gale (BF 6-7) tonight through Saturday. A Gale Warning is now in effect this 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. medium to high (30-70%) chance of showers and thunderstorms today and tonight will diminish from northwest to southeast Saturday.

FIRE WEATHER

Issued at 120 AM CDT Fri May 1 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, which will limit fire weather concerns into early next week.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 84 57 76 56 / 70 30 0 0 Victoria 76 53 75 51 / 90 40 0 0 Laredo 83 57 76 56 / 60 10 0 0 Alice 85 56 77 52 / 70 20 0 0 Rockport 83 59 78 62 / 70 30 0 0 Cotulla 74 55 76 53 / 80 10 0 0 Kingsville 86 56 76 54 / 60 20 10 0 Navy Corpus 83 60 76 65 / 60 30 10 0

CRP WATCHES/WARNINGS/ADVISORIES

TX...Wind Advisory from 7 PM this evening to 10 AM CDT Saturday for TXZ245-342>347-442-443-447.

GM...Small Craft Advisory from 7 PM to 10 PM CDT this evening for GMZ231-232-236-237-250-255-270-275.

Gale Warning from 10 PM this evening to 10 AM CDT Saturday for GMZ231-232-236-237-250-255-270-275.