textproduct: Houston/Galveston

KEY MESSAGES

- Rain chances return tonight due to another coastal low and incoming cold front with the greatest coverage of the showers and isolated thunderstorms likely remaining along the coast.

- Additional passing disturbances will provide intermittent periods of rain behind the front through Friday.

- Drier weather anticipated this weekend.

DISCUSSION

Issued at 1107 PM CST Wed Dec 3 2025

A surge of moisture and a weak coastal trough will bring continued widespread light showers with isolated moderate to heavy rainfall through daybreak. On average, up to 0.5-1" of rain is expected across the area, but there will be pockets of 2-3" of rain where those heavier showers develop (likely remaining south of I-10, and east of I-45). Scattered light rainfall will continue into the morning hours, then a weak cold front will slide through the area bringing a brief reprieve from the rain chances. Lingering moisture and passing upper-level shortwaves will lead to scattered showers and isolated thunderstorms along the coast Friday morning into Friday night. At this point, thinking no showers make their way much further north than I-10 with the highest coverage likely remaining off the coast. High pressure builds in over Texas over the weekend and into at least the first half of next week leading to dry weather for SE Texas.

Low temperatures through daybreak will be in the mid to upper 50s along and south of I-10 with mid 40s to low 50s expected to the north. Mostly cloudy skies and the passing cold front will lead to a chilly day on Thursday with highs only climbing into the mid 50s to mid 60s across the area. These chillier temperatures will continue into Friday with a northerly wind bringing ushering in these cooler temperatures. The high pressure and mostly clear skies will lead to warmer temperatures returning for the weekend with highs in the mid to upper 60s on Saturday, and then some low 70s returning south of I-10 on Sunday. A reinforcing, dry cold front slides through the area Sunday night ushering cooler temperatures to start the work week.

Fowler

AVIATION

(12Z TAF Issuance) Issued at 539 AM CST Thu Dec 4 2025

Widely scattered SHRA, areas of drizzle, and low cigs expected today. Drizzle, patchy fog, and low clouds will also result in reduced visibility. LIFR/IFR conditions expected to continue through the TAF period. Winds will increase from the north today, particularly near the coast where winds could gust 25-30 knots this afternoon and evening. By tomorrow morning, another round of scattered SHRA is expected to develop, with the best chance of morning rain being in our southern and coastal zones.

MARINE

Issued at 1107 PM CST Wed Dec 3 2025

Widely scattered showers and isolated thunderstorms will continue through daybreak as a weak coastal low slides through the area. Patchy fog will also continue to be possible through the early morning hours, especially in the southern waters off of Matagorda where rain coverage will be less. Isolated to scattered showers will persist through the morning hours ahead of an approaching cold front, which will move through the coastal waters in the early afternoon. Moderate to strong northerly winds will develop behind the cold front of around 20kt with gusts to 25kt, so a Small Craft Advisory has been issued Thursday afternoon into Thursday night. These strong offshore winds plus already low astronomical tides will lead to lower than normal water levels in the Bays during low tide Friday morning, down to around 0.5ft below MLLW. Winds lower through the Thursday night with light to occasionally moderate northeasterly winds persisting through Saturday. Lingering moisture and passing upper- level disturbance will bring continued chances of scattered showers Friday into Saturday.

Drier conditions return by Sunday, but a reinforcing cold front is expected to move through the coastal waters Sunday night bringing a brief period of moderate to strong northerly winds that persists into Monday morning.

Fowler

PRELIMINARY POINT TEMPS/POPS

College Station (CLL) 52 41 51 44 / 70 10 20 10 Houston (IAH) 57 44 55 49 / 80 20 40 20 Galveston (GLS) 65 49 59 54 / 90 30 50 50

HGX WATCHES/WARNINGS/ADVISORIES

TX...None. GM...Dense Fog Advisory until 6 AM CST early this morning for GMZ330- 350.

Small Craft Advisory from 2 PM this afternoon to midnight CST tonight for GMZ330-335-350-355-370-375.

Small Craft Should Exercise Caution until 6 AM CST early this morning for GMZ370-375.