textproduct: Houston/Galveston

KEY MESSAGES

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

- Showers/storms could become more numerous on Monday, especially in our southern and coastal counties.

- Pattern turns drier and hotter by mid/late week.

DISCUSSION

Issued at 1103 PM CDT Sat Aug 8 2026

Persistence forecast continues with not much in the way of meaningful changes, as hot weather and daily showers/storms are still anticipated through early next week. Same pattern remains in place with ridging situated over the Four Corners and off the East Coast. A weakness between both (lower heights & subsidence) has allow for scattered showers and storms these last several days, and will continue to do so today and in Monday as well (and possibly a bit more widespread). Most of this activity should occur during the daytime along the sea breeze. Much of this activity will likely occur over the southern 2/3rds of our CWA where CAM guidance has suggested deep tropical moisture to be present (2-2.5 inches). Storms have overall been very pulsy in nature, slow moving and vertically stacked with suboptimal organization. Still, these storms could produce gusty winds, frequently lightening and strong downpours at times. Areas that don't receive rainfall will still see fairly hot weather with highs in the 90s and heat indicies in the triple digits. Patchy fog may develop in spots during the early morning hours as well.

Rain chances tapper off into Tuesday as ridging builds across the northwestern Gulf. 850mb temperatures slide upwards again as temperatures rise again through the end of the upcoming work week.

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AVIATION

(00Z TAF Issuance) Issued at 654 PM CDT Sat Aug 8 2026

For the 09/00Z TAF update, a summertime diurnal pattern will continue through the forecast period as another round of TSRA/VCTS convection are expected to proceed through the airspace by 09/18Z-23Z. Until then, patchy FG is likely to redevelop by 06/12Z-15Z as winds slacken to near calm by 09/06-15Z. Southerly surface winds will regain speed in earnest by 09/18Z through the end of the period.

Cassel

MARINE

Issued at 1103 PM CDT Sat Aug 8 2026

Onshore winds 10-15 knots and seas of 2-4 feet are expected throughout the next several days. Rain chances increase slightly through early next week. Chances for scattered showers and storms will be greatest during the early morning through early afternoon hours for the Gulf. Shower and storm coverage may become more widespread through Monday. Rain chances taper off Tuesday.

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PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 75 96 75 95 / 20 10 0 10 Houston (IAH) 78 94 78 93 / 10 30 10 50 Galveston (GLS) 82 90 82 89 / 10 30 40 60

HGX WATCHES/WARNINGS/ADVISORIES

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