textproduct: Corpus Christi

KEY MESSAGES

Issued at 618 AM CDT Sun Aug 23 2026

- Heat Advisory from noon to 8 PM

- Major to Extreme risk of heat-related impacts continue into next week with peak afternoon heat indices around 110

- Daily elevated fire weather conditions over the Brush Country

DISCUSSION

Issued at 125 AM CDT Sun Aug 23 2026

High pressure continues near the Four Corners region, shifting slightly to the south/southeast through the week. This will keep our days very hot and dry through the middle of the week. Guidance continues to come in lower than expected for the next few days, so have blended the NBM with the most recent maxT observations. This increased the forecast temperatures to closer values to what we have been seeing. With these higher forecast values, elected to issue a Heat Advisory for today from noon to 8 PM. Winds will also be fairly light today, which will lead to a moderate to high WetBulb Globe Temperature today. This will be especially important for those working outside to consider: spend a maximum of 2 hours outdoor, with at least 4 breaks per hour. 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.

Late next week, guidance is hinting at the potential for a disturbance to sneak around the eastern periphery of the ridge. This could combine with some returning moisture to provide some relief. We will keep our fingers crossed, but this is still far enough out that we are not holding our breath.

AVIATION

(12Z TAFS) Issued at 618 AM CDT Sun Aug 23 2026

Not much change in overall forecast. VFR conditions will prevail through much of the TAF cycle with the exception of MVFR conditions at ALI and VCT briefly this morning and again Monday morning. S-SE 10-15 knots gusting to around 20 knots.

MARINE

Issued at 125 AM CDT Sun Aug 23 2026

Light to moderate (BF 2-4) onshore breezes will continue through the period, with occasional fresh (BF 5) breezes possible during the late afternoon/evening hours, especially south of Port Aransas. Seas are expected to remain around 2-3 feet. Rain chances will remain near zero through the middle of the week.

FIRE WEATHER

Issued at 125 AM CDT Sun Aug 23 2026

ERC values are in the 75-89th percentile, with low humidity, dry to critically dry fuels, and hot temperatures, leading to elevated fire weather conditions over the Brush Country and portions of the Coastal Plains. Conditions will need to be closely monitored as a few locations across the Brush Country could even see critical fire weather conditions into next week. Considered an RFD for today; however, the winds should remain low enough to forego this.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 99 76 98 76 / 0 0 0 0 Victoria 104 76 103 76 / 0 0 0 0 Laredo 107 77 106 77 / 0 0 0 0 Alice 104 74 104 74 / 0 0 0 0 Rockport 92 80 92 80 / 0 0 0 0 Cotulla 105 75 105 76 / 0 0 0 0 Kingsville 103 74 102 75 / 0 0 0 0 Navy Corpus 91 81 91 81 / 0 0 0 0

CRP WATCHES/WARNINGS/ADVISORIES

TX...Heat Advisory from noon today to 8 PM CDT this evening for TXZ230>234-241>247-342>344-346-347.

GM...None.