Area Forecast Discussion
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
837 FXUS64 KHGX 061144 AFDHGX Area Forecast Discussion National Weather Service Houston/Galveston TX 544 AM CST Sat Dec 6 2025 ...New AVIATION... .KEY MESSAGES... - Scattered light rain showers will continue across the coastal waters through Saturday night. - Patchy, but dense, fog will be possible across much of the area Saturday night into Sunday morning. - Cold front moves through the area Sunday ushering in chillier weather to start the work week. - Hazardous marine conditions with winds of 20-25 kt with gusts to 30-35 kt possible Sunday evening into Monday morning. && .DISCUSSION... Issued at 1036 PM CST Fri Dec 5 2025 Scattered light rain showers will persist to be possible into Saturday night, and while an isolated shower may skirt the coastal areas, the chance for rainfall has largely ended for SE Texas. Mostly cloudy skies Saturday morning will give way to mostly clear skies by Saturday night. Mostly clear skies and a light onshore wind bringing increased moisture will lead to the development of patchy, but dense, fog across most of the area Saturday night into Sunday morning. A dry cold front will slide through the area on Sunday ushering in a chilly north wind and drier conditions. Rather benign weather pattern will prevail through much of the upcoming work week as high pressure settles in over the region. There will be a slight warm up through the weekend with highs on Saturday rising mid to upper 60s, and then into the low to mid 70s on Sunday ahead of the cold front. This cold front will usher in a return of colder air Sunday night with low temperatures returning to the mid to upper 30s north of I-10, and then low to mid 40s towards the coast. The chilly weather continues into Monday with highs in the upper 50s to low 60s, and then lows in the mid to upper 30s for most of the area Monday night (with even some near freezing temperatures possible for the Piney Woods). A warm-up is expected through midweek due to mostly sunny skies and southerly flow returning with highs rising into the low to mid 60s on Tuesday, low to mid 70s on Wednesday, and some upper 70s possible on Thursday. Fowler && .AVIATION... (12Z TAF Issuance) Issued at 539 AM CST Sat Dec 6 2025 Scattered SHRA south of I-10 will result in occasionally reduced cigs down to IFR. SHRA should end later this morning, with most areas experiencing VFR conditions through the rest of the day. The exception may be at the coast, where MVFR conditions could try to hang on. Some uncertainty regarding cigs this afternoon, especially south of I-10. This evening and tonight, cigs and vis are expected to fall as a frontal boundary approaches. For now, the TAFs show MVFR/IFR conditions, especially after 0600 UTC. Most areas from Houston to the coast are expected to drop below VFR before 0600 UTC. We cannot rule out areas of LIFR by tomorrow morning before a cold front pushes through bringing drier air and a likely return to VFR. && .MARINE... Issued at 1036 PM CST Fri Dec 5 2025 Scattered light showers will persist through Saturday night with light northeasterly winds becoming light southerly winds through the day. The light onshore winds will lead to a chance of patchy, but dense, fog developing in the Bays and nearshore waters Saturday night into Sunday morning. A cold front is expected to pass through the coastal waters Sunday afternoon. No rain is expected to accompany the frontal passage, but it will usher in strong northerly winds Sunday evening into Monday morning. Northerly winds of 20-25kt with gusts to 30-35kt will be possible with rough bay waters and seas of 5-9ft. Conditions will improve through the day on Monday with light to moderate northeasterly winds expected by the late afternoon (although elevated seas in the coastal waters may linger into Monday evening). Light onshore flow is expected to develop by Tuesday afternoon and continue through much of next week. Low astronomical tides plus the offshore winds will also lead lower than normal water-levels in the bays with low tides expected to be around 0.5ft below MLLW through the first half of next week. Fowler && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 69 52 69 38 / 0 10 0 0 Houston (IAH) 68 55 73 43 / 10 10 0 0 Galveston (GLS) 67 61 72 48 / 30 10 10 0 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...None. GM...None. && $$ DISCUSSION...Fowler AVIATION...Self MARINE...Fowler