textproduct: Corpus Christi

KEY MESSAGES

Issued at 649 PM CDT Mon Jul 27 2026

- Heat Advisory in effect for most of South Texas Tuesday afternoon.

- Moderate to major risk of heat persists across South Texas throughout the period, with localized extreme heat risk developing across portions of the Brush Country later this week.

- Elevated fire weather conditions may develop across portions of the northwestern Brush Country during the middle to latter part of the week.

DISCUSSION

Issued at 130 PM CDT Mon Jul 27 2026

Ridging continues to dominate the weather pattern across South Texas, maintaining hot weather for the foreseeable future. 500mb heights will remain around 590-595 dam throughout the week with subsidence suppress convection, thus keeping rain chances slim to none. 850mb temperatures also firmly remain around 22-27C with clear to mostly clear sky cover during the daytime. The Coastal Bend/Coastal Plains area should see highs in the 90s with Brush Country seeing temperatures in the upper 90s to triple digits (upwards of 108). Even with the slightly "cooler" air temperatures near the coast, humidity will still amplify heat stress with heat index values across the whole region forecast to peak between 104- 116.

A Heat Advisory will be in effect for most of South Texas Tuesday afternoon, excluding the Barrier Islands. Heat risk is forecasted to remain Moderate (level 2/4) to Major (level 3/4) on Tuesday and in the days following, thus additional Heat Advisories may be warranted. Localized Extreme (level 4/4) heat risk could develop over portions of the Brush County later this week. Make sure to practice heat safety whenever possible. Drink plenty of water, wear loose fitting clothing and take breaks in the shade/indoors to cool off.

HGX - 03

AVIATION

(00Z TAFS) Issued at 649 PM CDT Mon Jul 27 2026

VFR conditions are expected to prevail throughout the TAF period. Diurnal winds from the southeast to south with gusts up to around 20-25KT during the afternoon/evening hours.

MARINE

Issued at 121 AM CDT Mon Jul 27 2026

A persistent onshore flow will continue through the period. Winds will generally remain gentle to moderate (BF 3-4), becoming fresh (BF 5) during the evening and overnight hours. Seas are expected to hold between 2 - 4 feet with little day-to-day change. Rain chances remain near zero through the forecast period.

FIRE WEATHER

Issued at 121 AM CDT Mon Jul 27 2026

Dry weather will persist through the period as high pressure remains in control. Minimum RH values will fall into the mid to upper 20% range across the northwestern Brush Country by midweek while remaining around 30% elsewhere across the Brush Country. Although 20- foot winds should remain below 15 mph, a combination of hot temperatures, lower humidity, and ERC values increasing into the 50th to 60th percentile range may result in localized fire weather conditions across portions of the northwestern Brush Country. Widespread critical fire weather conditions are not expected at this time.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 78 94 79 94 / 0 0 0 0 Victoria 76 96 77 98 / 0 0 0 0 Laredo 77 104 79 104 / 0 0 0 0 Alice 76 99 77 99 / 0 0 0 0 Rockport 81 91 82 92 / 0 0 0 0 Cotulla 77 104 79 104 / 0 0 0 0 Kingsville 77 96 78 97 / 0 0 0 0 Navy Corpus 81 89 82 90 / 0 0 0 0

CRP WATCHES/WARNINGS/ADVISORIES

TX...Heat Advisory from noon to 7 PM CDT Tuesday for TXZ229>234- 239>247-342>344-346-347.

GM...None.