textproduct: Houston/Galveston

KEY MESSAGES

- Hot and dry conditions are expected today with isolated to scatter showers and storms in the afternoon.

- Hot and humid conditions with daily chances for showers/storms will continue into next week.

DISCUSSION

Issued at 1108 PM CDT Fri Aug 28 2026

Precipitable water has started to diminish across Southeast TX late this evening, with 1.8 - 1.9 inches remaining over the coastal zones. Deep moisture convergence could persist through early morning, bringing the potential for a few showers and storms along the coast/coastal waters through mid/late Saturday morning. Otherwise, typical summer-like weather is expected today and Sunday with isolated to scattered afternoon showers and storms, primarily driven by the seabreeze. Highs generally in the mid to upper 90s with heat indices in the 103 to 108F range.

Mid to upper level ridge will continue to expand eastward across the southern Plains before shifting more to the east throughout the week. This pattern will keep Southeast TX generally under easterly flow aloft, bringing subtle disturbances into our region from the Gulf. With persistent warm and humid southerly surface flow, weak disturbances approaching from the Gulf, and seabreeze interaction in the afternoon, a daily risk of showers and thunderstorms can be expected through the week... better chances towards the end of the work week.

Near to slightly above normal temperatures are expected this weekend into the upcoming week with highs generally in the mid to upper 90s (inland) and in the low 90s (coast).Peak heat indices will generally remain in the 105 to 109F range.

JM

AVIATION

(12Z TAF Issuance) Issued at 601 AM CDT Sat Aug 29 2026

Patchy morning fog should clear by ~14Z. Most likely location to experience patchy fog this morning are UTS, CXO, SGR, and LBX. A light, prevailing, SE wind develops by late morning or early afternoon. Sea breeze boundary may result in brief gusts over 15 knots as well as a few isolated to widely scattered showers, indicated by the PROB30 -SHRA line in some of the TAFs. An isolated TSRA cannot be ruled out either. However, TSRA risk is too low for mention in the TAF.

MARINE

Issued at 1108 PM CDT Fri Aug 28 2026

A few showers and storms will be possible early this morning over the coastal waters, before diminishing after mid-morning. Otherwise, light onshore winds and seas around 1 to 3 ft will prevail today and will persist through the weekend and the upcoming week. A daily chance of showers and storms are expected each day next week as different disturbances over the Gulf moves westward into the Upper TX coast. Strong winds and building seas are possible near storms.

JM

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 98 75 97 75 / 20 0 0 0 Houston (IAH) 98 79 97 78 / 20 20 20 0 Galveston (GLS) 91 83 91 83 / 20 0 20 10

HGX WATCHES/WARNINGS/ADVISORIES

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