Area Forecast Discussion
Issued by NWS Birmingham, AL
Issued by NWS Birmingham, AL
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926 FXUS64 KBMX 231204 AFDBMX Area Forecast Discussion National Weather Service Birmingham AL 604 AM CST Sun Nov 23 2025 ...New AVIATION... .KEY MESSAGES... Updated at 600 AM CST SUN NOV 23 2025 - Dense fog will affect southeast portions of Central Alabama through early this morning. - Showers and thunderstorms are expected on Tuesday with a level 1 out of 5 risk for a couple severe thunderstorms. - Clear and colder conditions are forecast for Thanksgiving Day. && .DISCUSSION... (Today through next Saturday) Issued at 245 AM CST SUN NOV 23 2025 Early this week: A shortwave ridge approaches today and quickly scoots by on Monday, resulting in tame weather conditions. Northerly flow behind Saturday`s frontal passage will promote relatively mild temperatures today compared to yesterday`s record highs. Southerly flow kicks back in on Monday, once again increasing our margin above seasonal normals. Tuesday`s active weather: A pronounced trough over the Desert Southwest today is forecast to become more broad by the time it swings by our region. A key item is that through the course of this evolution, its axis of forcing quickly ejects to the northeast. This should leave us with a bit of a disjointed setup in terms of severe weather; however, a sheared wind profile is forecast to envelop the region with the prospect for at least a weakly unstable air mass, so its worth some attention. Forecast models suggest the initial wave of showers and thunderstorms should arrive across northwest Alabama around midnight. Though the trough axis would be at its most favorable proximity at this time, in the absence of appreciable warm advection to overcome boundary layer cooling, surface-based instability is shown to be nil. Thunderstorms could still occur, though, due to weak instability aloft, but the severe risk would be low in this environment. Showers and thunderstorms will advance across the rest of central Alabama through the course of Tuesday. Cloudiness plus the anticipated coverage and reoccurring nature of activity may keep surface-based instability fairly modest; combined with veering surface and low-level flow, and the main low-level jet corridor pulling away, the severe risk looks to remain low at this time. Still, there will be ample speed shear so we`ll have to closely monitor other environmental parameters. Showers and thunderstorms should draw to a close early Wednesday morning with variable cloudiness and a northwest breeze through the day. A chillier air mass will be inbound from the northwest, arriving Wednesday night. Late week: High pressure will be in control on Thursday and Friday, featuring clear weather and cold mornings/and cool to mild afternoons. The weekend: High pressure will move to the east on Saturday. A broad troughing pattern across the western CONUS will send a series of shortwaves eastward. If the faster model solutions are correct, we could see rain return for the second-half of the weekend. 89^GSatterwhite && .AVIATION... (12Z TAFS) Issued at 600 AM CST SUN NOV 23 2025 Low stratus and fog are present in 2 areas. The first in the SE affecting MGM/AUO is along and ahead of the front with IFR-LIFR conditions. The fog is lessoning as it erodes from the NE with drier air moving in behind the front. However, there is also some wrap around moisture after a gap on satellite. This will affect the remaining TAFs at TCL/BHM/EET. Low cig/vis will be moving into EET and is ongoing at TCL/BHM. This should go VFR by ~15-17z. NRLY winds 5-7kts will be present today with mixing behind the front. but should taper down after sunset. 08 && .FIRE WEATHER... MinRHs are forecast to remain well above critical thresholds over the next several days. Relatively low MinRHs look to return late next week, from Thanksgiving to Saturday. Light winds are forecast today and Monday, becoming closer to 10 mph with the potential for gusts near 20 mph from the south on Tuesday and northwest on Wednesday, the light once again later in the week. Widespread showers and a few thunderstorms are expected Tuesday and Tuesday night, perhaps some lingering activity into early Wednesday. && .PRELIMINARY POINT TEMPS/POPS... Gadsden 70 42 73 55 / 0 0 0 50 Anniston 71 44 74 57 / 0 0 0 30 Birmingham 69 47 73 60 / 0 0 0 50 Tuscaloosa 72 47 76 60 / 0 0 0 60 Calera 73 45 76 57 / 0 0 0 40 Auburn 74 51 75 57 / 0 0 0 20 Montgomery 75 48 78 58 / 0 0 0 20 Troy 74 50 78 56 / 0 0 0 10 && .BMX WATCHES/WARNINGS/ADVISORIES... Dense Fog Advisory until 8 AM CST this morning for the following counties: Barbour-Bullock-Chambers-Elmore-Lee-Lowndes-Macon- Montgomery-Pike-Russell-Tallapoosa. && $$ DISCUSSION...89^GSatterwhite AVIATION...08