textproduct: Corpus Christi

KEY MESSAGES

Updated at 627 AM CDT Thu Jul 23 2026

- A Heat Advisory is in effect across much of South Texas today from 1pm to 7pm.

- Monitoring for impacts along the Middle Texas Coast from Tropical Storm Bertha.

DISCUSSION

Issued at 125 AM CDT Thu Jul 23 2026

The forecast period begins Thursday with another day of dangerous heat as the main concern. Overall, expecting cooler temperatures later in the day due to increasing cloud cover and rain chances. But ahead of that temperatures could rise enough to result in a moderate to major heat risk. A heat advisory will be in effect from 1 pm through approximately 7 pm. Please remember to take proper precautions to keep you and others safe from heat related illness. Attention then turns to Tropical Storm Bertha as the primary forecast concern. Increasing tropical moisture will support greater rain chances across South Texas and the adjacent coastal waters Thursday into Friday, followed by a transition toward a more typical late-July pattern this weekend and next week. Heat will remain an additional concern, particularly where rainfall is less widespread and during the increasingly dry period behind Bertha. As of Wednesday afternoon, the center of Tropical Storm Bertha had moved inland near the St. Bernard Parish, Louisiana and Biloxi, MS areas after making landfall along the la coast. Bertha has continued to move generally west along the northern Gulf Coast. Persistent northeasterly shear has displaced the deepest convection south of the exposed low-level circulation, while dry-air entrainment and increasing interaction with land should promote gradual weakening, the latest forecast continues to favor Bertha weakening while tracking westward and eventually dissipating after moving inland over Eastern or Southeastern Texas. Some uncertainty remains regarding whether a better-defined circulation could redevelop beneath the convection if Bertha spends additional time near or over the Gulf waters. Although the center of Bertha should remain well north of south texas, its broad and asymmetric moisture will extend much farther south and west than the circulation itself. Deep tropical moisture and weak large-scale ascent should spread into the region Thursday, with rain chances increasing from northeast to southwest during the day. Scattered to numerous showers and thunderstorms Thursday afternoon and evening, with the greatest coverage across the Victoria Crossroads, Coastal Plains and Gulf waters. Locally heavy rainfall will be possible beneath the stronger and/or slower- moving cells. Current forecasts continue to favor rainfall amounts of generally 1-3 inches with isolated amounts up to around 6 inches through Friday and the Weather Prediction Center (WPC) has much of South Texas south along the coast and up to the Coastal Plains and Victoria Crossroads under a marginal risk for excessive rainfall and flash flooding. There's a very low (~20%) chance for tropical storm force winds Thursday, primarily across the northeastern counties of the northern Coastal Bend and Victoria Crossroads. Looking ahead to next week post Bertha, temperatures will trend upward resulting in a return to moderate to major heat risk.

AVIATION

(12Z TAFS) Issued at 627 AM CDT Thu Jul 23 2026

VFR conditions noted at all sites this morning, and expected to largely continue through the period. We will see an increase in shower and thunderstorm activity this afternoon and tonight with convection associated with Tropical Storm Bertha moving through. Have noted gusty conditions possible within the storms.

MARINE

Issued at 125 AM CDT Thu Jul 23 2026

A gentle to moderate (BF 3-4) southwesterly flow this morning will increase to fresh to strong (BF 5-6) at times today as winds back to onshore, before settling into a moderate flow that is expected to persist through the rest of the forecast period. As Tropical Storm Bertha approaches the Texas coast, swells and waves will build and a Small Craft Advisory is in effect this afternoon until this evening. Accompanied by moderate to high rain and thunderstorm chances associated with Bertha.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 99 78 92 79 / 50 70 0 0 Victoria 99 77 93 76 / 60 70 10 0 Laredo 108 79 99 77 / 10 70 20 0 Alice 103 76 96 76 / 30 70 10 0 Rockport 94 80 91 81 / 60 70 0 0 Cotulla 107 79 98 77 / 0 40 10 0 Kingsville 100 77 94 77 / 40 70 10 0 Navy Corpus 93 81 89 82 / 60 70 0 0

CRP WATCHES/WARNINGS/ADVISORIES

TX...Heat Advisory from 1 PM this afternoon to 7 PM CDT this evening for TXZ229>234-239-244>247-344-346-347.

GM...Small Craft Advisory from 3 PM this afternoon to 1 AM CDT Friday for GMZ236-237-255-275.