FXUS64 KHGX 241855 AFDHGX Area Forecast Discussion National Weather Service Houston/Galveston TX 1255 PM CST Wed Dec 24 2025 ...New DISCUSSION, MARINE... .KEY MESSAGES... - Very warm and humidity conditions continue into the weekend. Some days could reach record warmth. - Through the weekend, expect daily visibility reductions due to fog and sea fog, especially across the bays and coastal areas. The main threat for fog will be during the nighttime and morning hours. Afternoon fog a possibility near the coast. - Strong cold front late Sunday night into Monday morning to bring much colder conditions Monday-Tuesday before gradually warming back up towards average heading into New Year's Eve. && .DISCUSSION... Issued at 1222 PM CST Wed Dec 24 2025 The pattern over Texas is being driven by one dominant and one secondary feature. The dominate feature is a large mid/upper ridge that looms large over south-central and southeastern CONUS. The ridge is a major contributer to the holiday heat effecting much of CONUS west of the Rockies. This ridge coupled with onshore flow in the low levels will keep things quite warm and humid through this weekend. But for those who know a thing or two about the weather, you'd think that the ridge would equate to mostly sunny skies. But instead, our afternoon skies feature plentiful low to mid level cumulus. We also have very resilient sea fog over the Gulf, which has struggle to break during the afternoon. These clouds and resilient sea fog are a function of our secondary feature, the mid-level low over northeast Mexico. The low is supplying deep, moist southerly flow aloft, resulting in a rather moist profile considering the proximity of the mid/upper high. Therefore, there hasn't been enough dry air aloft to completely mix out the fog offshore. Afternoon temperatures are expected to average in the upper 70s to low 80s through this weekend. Expect it to feel a few degrees warmer thanks to that humidity. Overnight lows should average in the 60s. If the recent warmth and humidity takes you out of the holiday fantasy, then fear not! For a strong cold front approaches on Sunday. Gusty winds are likely in the front's wake Sunday night into Monday. The ~1040MB high behind the front should build southward, advecting cold air southward across the plains and into Texas. Monday and Tuesday are expected to feature afternoon highs in the 50s with overnight lows in the 30s. We even have upper 20s in our northern counties. As the forecast stands now, areas outside Houston's urban heat island and away from the coast could easily experience a light freeze for one or two nights next week. Could not rule out freezing temperatures in the city either. But for now, we are going with Monday/Tuesday night lows in the mid/upper 30s in the City of Houston. Self && .AVIATION... (12Z TAF Issuance) Issued at 541 AM CST Wed Dec 24 2025 A mix of LIFR to IFR conditions currently over Southeast TX due to low cloud decks and areas of patchy to dense fog. Conditions are expected to gradually improve after 14-15Z as fog burns off and cigs gradually rise. Conditions may be slow to recover at GLS and LBX due to the influence of sea fog continuing over the bays and nearshore waters. Clouds could scatter out for several locations in the afternoon to early evening hours. However, cloud decks will return and lower once again tonight into Wed morning. Patchy to dense fog will also reduce vis again for several locations, in particular for sites south of IAH. SE-SSE winds will be 5-10 KTS today and relax back down to 5 KTS or less tonight. Cotto && .MARINE... Issued at 1222 PM CST Wed Dec 24 2025 Sea fog is expected to remain an issue through the weekend. Though the fog has lifted in many areas as of noon today, a fog bank south of the Sabine is drifting westward and may reduce visibility in the vicinity of Bolivar, Galveston, Galveston Bay, and the adjacent Gulf waters this afternoon. Even if this fog bank dissipates, the chance of widespread dense sea fog will increase again by this evening. Sea fog during the evening, overnight, and morning hours will remain likely through the weekend. It is possible that fog could become somewhat less severe and less widespread this weekend if ocean temperatures manage to sufficiently warm. The next feature of interest will be a cold front that is expected to push offshore late Sunday night or early Monday morning. Strong gusty winds and building seas are expected in the front's wake. Winds should easily reach Small Craft Advisory criteria. Gale conditions are possible on Monday, especially over the open Gulf. But we cannot rule out gale conditions in the bays as well. && .CLIMATE... Issued at 1148 PM CST Tue Dec 23 2025 The record high of 81 degrees was tied for the City of Houston earlier today. With temperatures not likely to change significantly until Sunday's front, records may potentially be tied or broken through the end of the week. At the very least, we will be much closer to those records than we will be to seasonal averages. As a quick summary, record highs at the two Houston climate sites (IAH, Hobby) range from 81-84 over the next five days, while record high min temps range from 68 to 75 degrees. College Stations records range from 81 to 86 for highs and 65 to 73 for high mins. Galveston's record highs range from 78 to 80 for max temps, and 67 to 71 degrees for record high min temps. Luchs/Fowler && .PRELIMINARY POINT TEMPS/POPS... College Station (CLL) 64 82 61 82 / 0 0 0 0 Houston (IAH) 64 82 62 82 / 0 0 0 0 Galveston (GLS) 67 75 67 75 / 0 0 10 0 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...None. GM...Dense Fog Advisory until noon CST Thursday for GMZ355. && $$ DISCUSSION...Self AVIATION...Cotto MARINE...Self