textproduct: Corpus Christi

KEY MESSAGES

Issued at 125 PM CDT Sat Sep 12 2026

- Moderate to Extreme risk of heat-related impacts across a large portion of South Texas today through early next week.

- Heat Advisory in effect through 6 PM today.

- Low to very low rain chances today through early next week, then increasing to a medium chance across the Victoria Crossroads by mid week.

- Elevated Fire Weather conditions today and remains possible through Monday, mainly across the inland Coastal Plains, Brush Country and Rio Grande Plains.

DISCUSSION

Issued at 125 PM CDT Sat Sep 12 2026

Little change in the forecast with this update. Main concern continues to be heat across the region. With ridging building more over the area will maintain above normal temperatures with highs ranging from the lower 90s along the coast to around 105-107 west. The highest heat index values will be over the Coastal Plains and into the Brush Country though, as dewpoints are highest over the east, with substantial mixing inland decreasing humidity. No real change is expected in the MaxT forecast through at least the first half of the week. As moisture increases by mid-week, we could drop a degree or two, but we'll remain above normal.

In terms of rainfall, for most of the area rain chances remain very low (below 20%) for much of the period. The Victoria Crossroads does have slightly higher chances at times (20-30%) where the higher (though still not much to get excited about) PWAT values reside. By Wednesday or Thursday guidance still suggests a plume of moisture moving into the region. The current PoPs may be a bit on the high end just based on recent patterns, but should see at least scattered showers and storms for Thursday, especially east.

AVIATION

(18Z TAFS) Issued at 125 PM CDT Sat Sep 12 2026

Gusty winds will persist this afternoon and into the evening with a few gusts near 30 kts possible, all out of the southeast. Winds weaken overnight, but will increase again toward mid-day Sunday - not as high as today though. VFR conditions are expected through the period though brief MVFR CIGS can not be ruled out at ALI or VCT toward morning, this is not expected to be long lasting or wide spread.

MARINE

Issued at 125 PM CDT Sat Sep 12 2026

A fresh (BF 5) southeasterly breeze continues this afternoon south of Port Aransas, but should be a bit weaker tomorrow, with a mainly moderate (BF 4) breeze across the region Sunday through much of next week. Rain chances remain low through the next several days but are expected to increase by mid-week.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 80 97 80 97 / 0 10 10 10 Victoria 77 101 77 100 / 0 20 20 30 Laredo 79 105 79 105 / 10 0 0 0 Alice 77 102 76 102 / 0 10 0 10 Rockport 82 94 81 94 / 0 20 20 20 Cotulla 78 105 77 104 / 10 0 10 0 Kingsville 78 100 78 100 / 0 10 0 10 Navy Corpus 83 93 83 93 / 0 20 10 10

CRP WATCHES/WARNINGS/ADVISORIES

TX...Heat Advisory until 6 PM CDT this evening for TXZ230>234-240>247- 342>344-346.

GM...Small Craft Advisory until 8 PM CDT this evening for GMZ231-232- 250.