textproduct: Corpus Christi

KEY MESSAGES

Issued at 122 AM CDT Tue Aug 4 2026

- Moderate-major risk of heat-related impacts through the week, with peak heat indices 106 to 112, and high to extreme WBGT values.

- Locally elevated fire weather conditions over the western Brush Country through the week.

DISCUSSION

Issued at 122 AM CDT Tue Aug 4 2026

A fairly typical and benign summer-time setup can be expected the first full week of August as South Texas lies on the eastern flank of mid-lvl ridging over the desert SW. At the lower-lvls S-SE flow will gradually increase towards the mid-week period as the subtropical highs builds westward into the Gulf. Outside of localized moisture pooling along the sea-breeze, ambient PWATs will generally run 1.4 to 1.8 inches through the period (generally 25th to 50th percentile for climo). This setup will maintain largely dry conditions with any storm chances confined to the sea breeze. Rain chances will generally be 10 percent or less (but not entirely zero) through Wednesday, before potentially creeping up slightly (mainly over the Victoria Crossroads) late week into the weekend as low-lvl southerly flow increases.

As mentioned in previous discussions we will remain seasonably warm through the forecast period with high temperatures largely in the triple digits west of US-281, and 90s elsewhere. These temperatures combined with lows in the upper 70s to lower 80s will maintain a moderate to major heat risk each day. Max heat indices will also flirt with heat advisory criteria each day in the mid-week period and short-fused advisories will need to be considered. Finally, for anyone doing strenuous activities in direct sunlight, WBGT values will peak in the high to extreme range, occasionally even exceeding 90 degrees. To sum it all up, make sure to stay hydrated, take frequent cooling breaks, and seek shade when possible as we are entering the hottest time of the year climatologically in South Texas.

AVIATION

(06Z TAFS) Issued at 122 AM CDT Tue Aug 4 2026

Brief MVFR conditions are expected across mainly VCT between 10-14Z, mainly due to light patchy fog. Brief MVFR conditions will be possible once again early Wednesday morning. Otherwise, VFR conditions will prevail through the TAF cycle. Light and variable winds will strengthen out of the S-SE to around 15 knots with gusts 20-25 knots as the sea breeze moves inland.

MARINE

Issued at 122 AM CDT Tue Aug 4 2026

A gentle to moderate onshore (largely from the S-SE) flow can be expected through the forecast period, occasionally fresh winds can be observed along the nearshore bays in the afternoon. Seas will generally range from 2-3 feet through the period. Daily rain chances will be under 20% through at least Thursday.

FIRE WEATHER

Issued at 122 AM CDT Tue Aug 4 2026

Min RHs will generally drop into the 25-35% range each afternoon through the week over the western Brush country and Rio Grande Plains. These low RHs combined with ERCs in the 55-75th percentile range will support localized elevated fire weather conditions over this region each day. Winds will gradually increase out of the E-SE in the 12 to 18 kt during the afternoons. Daily rain chances will generally be 10% or less through the week.

PRELIMINARY POINT TEMPS/POPS

Corpus Christi 94 79 94 79 / 0 0 0 0 Victoria 100 76 97 76 / 0 0 0 0 Laredo 103 79 104 79 / 0 10 0 0 Alice 98 76 98 76 / 10 0 0 0 Rockport 92 81 92 81 / 0 0 0 0 Cotulla 104 77 104 77 / 10 0 0 0 Kingsville 96 77 96 77 / 10 0 0 0 Navy Corpus 89 82 90 81 / 0 0 0 0

CRP WATCHES/WARNINGS/ADVISORIES

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