textproduct: Corpus Christi

KEY MESSAGES

Issued at 329 PM CDT Tue Aug 18 2026

- Moderate to major risk of heat-related impacts through next week with peak afternoon heat indices around 110

- Monitoring daily elevated fire weather potential over the Brush Country through the week and into next week

DISCUSSION

Issued at 329 PM CDT Tue Aug 18 2026

As if you didn't know already, it is going to be a very hot period through next week for South Texas. A high that is located around the Four Corners region, will meander south-southeastwards slightly by next week. This will promote very dry rain free conditions outside of occasional isolated seabreeze convection daily. Will continue to monitor the need for short-fused heat related products. We could see peak heat indices of 110 to 115 with dew points in the mid to upper 70s into next week. This translates to moderate to predominately major HeatRisk conditions, though some areas of extreme HeatRisk will be possible in the Brush Country. We strongly encourage the practice of heat safety in these conditions. Take frequent breaks and remember to stay hydrated, check those backseats, and avoid long exposure in these temperatures. For more information be sure to check out weather.gov/heatsafety.

There will be an additional risk for elevated fire weather over the Rio Grande Plains into the next week due to low RH (<30%). Even though winds aren't expected to be near criteria during this time frame, fires can still be easily ignited given the dry conditions.

AVIATION

(18Z TAFS) Issued at 1218 PM CDT Tue Aug 18 2026

VFR conditions will be expected for the entirety of the period. Expect breezy south winds through the period with gust up to 20-25 knots through the day. Winds at the eastern sites will dwindle this evening, whereas the winds at the western sites will likely remain gusty through Wednesday morning.

MARINE

Issued at 329 PM CDT Tue Aug 18 2026

Onshore winds will be generally gentle to moderate (BF 3-4), with occasional fresh (BF-5) flow possible each afternoon into the early evening hours. Seas should remain relatively steady around 2-3 ft with no significant marine hazards anticipated. Rain chances will remain very low through the weekend, with chances returning next week.

FIRE WEATHER

Issued at 1246 AM CDT Tue Aug 18 2026

Elevated fire weather concerns will continue, particularly across the Brush Country, as hot and dry conditions persist. Minimum RH values will briefly fall into the mid 20s for several hours each afternoon across the Brush Country. ERC values remain within the 70th-89th percentile, while maximum RFTI values remain around 2. Although widespread critical fire weather conditions are not anticipated, the combination of low afternoon humidity, increasingly dry fuels, and hot temperatures will maintain an elevated fire weather risk through much of the period.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 77 95 79 96 / 0 0 0 0 Victoria 76 100 77 100 / 0 0 0 0 Laredo 77 104 79 105 / 0 0 0 0 Alice 75 102 76 102 / 0 0 0 0 Rockport 81 92 82 92 / 0 0 0 0 Cotulla 76 105 78 106 / 0 0 0 0 Kingsville 76 99 78 99 / 0 0 0 0 Navy Corpus 81 90 82 91 / 0 0 0 0

CRP WATCHES/WARNINGS/ADVISORIES

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