textproduct: Houston/Galveston

KEY MESSAGES

- Isolated to scattered showers and storms are expected early this morning over the coastal zones and further inland with the seabreeze this afternoon.

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

DISCUSSION

Issued at 1204 AM CDT Fri Aug 28 2026

Isolated showers and thunderstorms will continue to develop overnight as the main frontal boundary slowly shifts toward the coast. As of 12 AM this morning, the boundary was almost stationary and extended roughly along the I-10 corridor. With deep low level moisture (PWs 2 - 2.3"), and deep moisture convergence remaining over the region, rain and storm chances will continue overnight through early Friday. The best focus for any convection will reside near the slow-moving boundary, which is generally over the coastal counties. The severe weather threat is low; however, gusty winds, brief heavy downpours and frequent lightning are possible with any strong storms.

The boundary is forecast to move off the coast by the morning hours, keeping some activity over the coastal waters. Overall, north to easterly winds will prevail through the day, bringing a slightly drier air mass. It won't be completely dry, though. A few showers and storms are again possible in the afternoon with the seabreeze interaction. Temperature-wise, it will be hot, but at least not in the triple digits. Highs will generally be in the mid to upper 90s. Remember to practice heat safety wherever you are!

Beyond Saturday, mid to upper lvl ridge centered over West TX will continue to expand eastward through early next week. While a few disturbances moves into the region from the Gulf through the week. These disturbances along with the afternoon seabreeze interaction will keep a daily risk of rain/storm chances.

AVIATION

(12Z TAF Issuance) Issued at 617 AM CDT Fri Aug 28 2026

Isolated SHRA/TSRA should continue this morning. The earlier TSRA near IAH is dissipating. We expect more isolated to scattered SHRA/TSRA activity this afternoon, with the best chance of TSRA south of I-10. Thus, we have included TS w/in PROB30s for our terminals south of I-10, with SHRA PROB30s farther north. However, we cannot completely rule our TS north of I-10. Conditions will generally be VFR. But IFR-MVFR along with locally gusty winds are likely in the vicinity of any TS.

MARINE

Issued at 1204 AM CDT Fri Aug 28 2026

A weak frontal boundary is expected to reach the coastal waters early this morning before washing out/weakening through the day. A few showers and storms will be possible along the boundary. Strong winds and building seas are possible near any strong storms. Generally light offshore winds are expect today, before winds shift more southerly after Saturday. Overall, expect a daily risk of showers and storms with the best chances in the morning over the Gulf waters and in the afternoon over the bays.

JM

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 97 76 97 75 / 20 10 10 0 Houston (IAH) 97 79 97 78 / 20 20 20 0 Galveston (GLS) 91 82 92 83 / 20 10 0 0

HGX WATCHES/WARNINGS/ADVISORIES

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