textproduct: Houston/Galveston

KEY MESSAGES

- Scattered seabreeze showers and thunderstorms expected on a daily basis into early next week.

- Seasonably hot with highs in the 90s and heat index values 101-108F each day.

DISCUSSION

Issued at 1150 AM CDT Thu Aug 6 2026

Light SSW winds, warm temps, and dewpoints in the upper 70s to around 80 will probably produce some heat index readings around, or slightly above, 108F this afternoon. Due to the short nature, the plan for now is to forgo a head advsy...but typical summertime heat precautions should still be considered.

Otherwise, we're seeing some higher PW air, compared to the previous several days, track into the region from the east & southeast. Once we get some more daytime heating and a seabreeze/baybreeze to generate we should see some sct shra/tstms develop across parts of the region.

Pretty much a rinse/repeat scenario through the weekend into early next week with the synoptic pattern remaining about the same (ridging over the Four Corners into wcntl Tx, more ridging in the Atlantic, and troffiness/weakness in between). Fluctuations on PW values should generally drive POPs and overall coverage each day. Deterministic guidance isn't in the best of agreement in terms of the finest details in those regards...but the southern 2/3 of the CWA will probably see the overall better chances. POPs may need to be nudged upwards some Sun-Mon if ECMWF ends up being the deterministic model of choice.

With more cloudiness and a prevailing SE llvl flow, we'll probably see highs a few degrees lower than previous days. But they should trend back up toward the middle part of next week as Atlantic ridging begins expanding westward across the NE/Ncntl Gulf. 47

AVIATION

(18Z TAF Issuance) Issued at 1150 AM CDT Thu Aug 6 2026

Scattered showers and thunderstorms are expected to develop near the Houston terminals 19-23Z. Have placed a PROB30 in the forecast. North of KCXO there could be isolated convection but confidence is too low to mention in the TAFs. Expect a repeat performance on Friday afternoon. Otherwise generally VFR conditions are expected area wide. Southeast winds may gust around 15 knots at times 20-00Z. MVFR ceilings could impact KCLL terminal 13-16Z Friday. 35

MARINE

Issued at 1150 AM CDT Thu Aug 6 2026

Typical summertime conditions expected through the weekend into early next week. South and southeast winds, generally in the 10-15 knot range and 2-4 foot seas are expected. Look for some scattered shower and thunderstorm development each day...with the better chances in the early morning through early afternoon hours. 47

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 76 95 75 95 / 20 20 0 20 Houston (IAH) 79 95 78 94 / 20 30 0 30 Galveston (GLS) 83 90 82 90 / 20 20 10 20

HGX WATCHES/WARNINGS/ADVISORIES

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