textproduct: Corpus Christi

KEY MESSAGES

Updated at 125 PM CDT Sun Apr 26 2026

- Moderate to Major heat risk inland through Tuesday. Practice heat safety, for more information: weather.gov/heat

- Low shower and thunderstorm chances (20-40%) return Thursday night through Saturday due to our next cold front

DISCUSSION

Issued at 125 PM CDT Sun Apr 26 2026

Although we do expect above normal temperatures early this week, enhanced moisture overall has allowed overnight clouds to linger through the much of the morning hours. Yesterday, the Brush Country was around 5 degrees cooler than expected, likely due to lingering clouds and haze, reducing the amount of time for surfacing heating. Current cloud cover is significant so I do have lower confidence triple digits will be reached over the Rio Grande Plains this afternoon.

A warming trend will persist through Wednesday as a mid-level ridge churns over southern Mexico and 850mb temps run high in the 90-99th percentile according to the NAEFS. Low-level moisture will continue to bring in dewpoints in the mid-70s, bringing max heat indices of 100-110 inland and in the mid to upper 90s along the Coastal Bend through Wednesday. These factors lead to a moderate to major heat risk across inland portions of South Texas, with greatest impacts over the Brush Country.

A deep trough over the Great Lakes region will push a cold front into Texas during the latter half of the week. Guidance is in good agreement bringing this front near or into South Texas Wednesday night, before stalling around the area leading to cloudy conditions. The front will then be aided by a developing surface low over northeast Mexico moving eastward into the Gulf, to surge southward through the area by either Friday or Saturday. PWATS will climb to near 2.0" (99th percentile) and allow for low (20-40%) shower and thunderstorm chances Thursday night through Saturday. The increased cloud cover will limit the heat risk and temperatures Thursday and Friday. Max temperatures will drop significantly to range from the mid 70s to around 80 this weekend in the wake of the cold front.

AVIATION

(18Z TAFS) Issued at 125 PM CDT Sun Apr 26 2026

Ceilings are bouncing between MVFR/VFR early this afternoon and will continue to do so with more frequent breaks to VFR out west. A stronger LLJ with above normal moisture will lead to another low ceiling event tonight with less of a chance for dense fog due to slightly stronger winds at the surface from mixing. Short range model guidance is in good agreement with IFR ceilings across the coastal sites (CRP/VCT/ALI) developing by about 03Z and persisting through 14-15Z with a medium to high (50-70%) chance of LIFR ceilings between 07-14Z. MVFR ceilings are expected to prevail after 14-15Z through the rest of the forecast period.

MARINE

Issued at 125 PM CDT Sun Apr 26 2026

A gentle to moderate onshore breeze (BF 3-4) will continue through Monday night, before occasionally strengthening to fresh (BF 5) during the afternoon and evening hours Wednesday and Thursday. A cold front will push through either Friday or Saturday, leading to fresh onshore flow ahead of it, followed by a strong northeast breeze (BF 6) in its wake. There is a low to medium (20-50%) chance of showers and thunderstorms Friday through Saturday.

FIRE WEATHER

Issued at 125 PM CDT Sun Apr 26 2026

Elevated fire weather conditions are not expected this week. Minimum relative humidity will drop as low as 30-35 percent over the Brush Country each afternoon, but winds will likely remain below elevated criteria. Temperatures will heat up early this week with highs in the triple digits over the Brush Country through Wednesday before a cold front approaches and impacts South Texas in the latter half of the week. The cold front will push through either Friday or Saturday, leading to low rain chances, increased cloud cover, and a decrease in temperatures.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 75 89 75 89 / 0 0 0 0 Victoria 73 92 73 91 / 0 0 0 0 Laredo 76 100 76 101 / 0 0 10 0 Alice 74 96 75 97 / 0 0 0 0 Rockport 75 86 76 85 / 0 0 0 0 Cotulla 74 99 76 101 / 0 0 10 0 Kingsville 74 94 74 94 / 0 0 0 0 Navy Corpus 76 84 76 84 / 0 0 0 0

CRP WATCHES/WARNINGS/ADVISORIES

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