textproduct: Corpus Christi

KEY MESSAGES

Updated at 603 PM CDT Wed Jun 3 2026

- Scattered to numerous showers and thunderstorms the remainder of the work week and into the weekend.

- Rip current risk increases this weekend along with chances for minor coastal flooding at times of high tide.

- Widespread Moderate Heat Risk (level 2 of 4) expected to develop beginning Sunday, persisting through at least early next week.

DISCUSSION

Issued at 119 PM CDT Wed Jun 3 2026

Most of this forecast period, we will be under the influence of an upper-level low as it tracks across the Baja Peninsula into northern Mexico. This will promote a persistent west-southwesterly flow aloft, allowing shortwave disturbances and Pacific moisture to stream into the region. At the surface, high pressure centered across the eastern CONUS combined with a weak inverted trough over the Gulf will allow for east-southeasterly flow, supporting an influx of abundant Gulf moisture across the region. With all this moisture in play, PWATs will rise and generally range between 1.8- 2.4 inches, creating a favorable environment for efficient rainfall production and daily rounds of showers and storms.

The greatest potential for more widespread and organized convection will arrive late Thursday into Friday, particularly across the Rio Grande Plains and western portions of the CWA, where enhanced forcing may support higher storm coverage and an increased heavy rainfall threat. Elsewhere, rain chances will be mainly diurnally driven, with the highest chances occurring from late morning through early evening, like what we are seeing today. Given the weak steering flow aloft, some storms may be slow-moving and capable of producing higher rainfall rates, which could result in localized flooding and ponding of water, especially in urban and poor drainage areas. WPC continues to highlight portions of our area in a Marginal Risk (level 1 of 4) for excessive rainfall each day through the weekend.

Along the coast, persistent onshore flow will elevate surf and wave energy through the weekend, increasing the risk for rip currents beginning late Thursday and continuing into the weekend. Additionally, rising water levels combined with increasing swell periods of 7-9 seconds could result in minor coastal flooding, especially near times of high tide.

Temperatures will generally remain near to slightly below normal through the weekend due to increased cloud cover and precipitation chances. High temperatures will mostly range from the upper 80s to low 90s, while lows remain in the 70s. Areas that receive more persistent rainfall may observe locally cooler temperatures. Patchy fog will also remain possible overnight and during the early morning given the combination of the moist environment and light winds. By late weekend into early next week, the upper low is expected to gradually weaken as a deeper trough develops along the Pacific Coast. As this occurs, the support for convection will diminish and warmer temperatures will return. More widespread highs in the 90s are anticipated along with increasing heat indices and a growing Moderate Heat Risk (level 2 of 4).

AVIATION

(00Z TAFS) Issued at 603 PM CDT Wed Jun 3 2026

Mostly stratiform rain remains across much of South Texas with areas of stronger convection. This is where CIG/VIS reductions will briefly lead to MVFR conditions through 02Z. Hi-res models again hint at an uptick of shower activity along the coastal plains after 08Z and continuing through the 22Z. PROB30 groups have been added to terminals to account for the period of scattered shower/thunderstorm activity.

MARINE

Issued at 119 PM CDT Wed Jun 3 2026

An east-southeasterly gentle to moderate breeze (BF 3-4) will continue through the remainder of the work week with seas of 3-5 feet. Winds become more southeasterly by Friday night, increasing to moderate to fresh (BF 4-5) levels by Saturday afternoon and continuing into next week. Expect daily rain chances closest to the barrier islands through the weekend.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 75 87 76 87 / 20 40 10 30 Victoria 71 86 72 87 / 20 60 10 40 Laredo 74 91 74 88 / 20 10 60 70 Alice 73 87 73 87 / 20 30 10 60 Rockport 77 89 79 89 / 40 40 20 20 Cotulla 73 91 74 87 / 10 10 50 70 Kingsville 74 87 75 87 / 20 40 10 50 Navy Corpus 78 87 79 87 / 30 30 10 10

CRP WATCHES/WARNINGS/ADVISORIES

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