Area Forecast Discussion
Issued by NWS Birmingham, AL
Issued by NWS Birmingham, AL
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055 FXUS64 KBMX 052338 AFDBMX Area Forecast Discussion National Weather Service Birmingham AL 538 PM CST Wed Feb 5 2025 ...New AVIATION... .SHORT TERM... (This afternoon through Thursday) Issued at 1217 PM CST WED FEB 5 2025 A stalled front over the area will begin to lift back towards the north this afternoon with Central Alabama under warm, southwesterly low-level flow and weak isentropic lift. A deeper layer of moisture is lifting across the Lower MS River Valley from a cutoff low over Mexico, and some isolated showers have begun to move across the area. Passing showers will continue through the afternoon, and it appears that thunderstorm chances are very low, with highest PoPs across the northern half of the area. Much of the area will remain dry. Even with the cloud cover, temperatures will warm into the mid to upper 70s. Mild and humid conditions redevelop tonight, and some advection fog appears likely again, especially in the south. May need to draw up another Dense Fog Advisory later on if guidance continues to indicate higher probabilities for lower visibility, but current probs of less than 0.5mi visibility is around 30-40% for parts of the area. Temperatures will fall into the mid to upper 50s overnight. The front will meander across Tennessee tomorrow, and some isolated to scattered showers may develop again during the day, but chances appear lower tomorrow than they are today. Most of the area will be mostly cloudy with highs in the 70s. 86/Martin && .LONG TERM... (Thursday night through next Tuesday) Issued at 237 PM CST WED FEB 5 2025 Upper level pattern through the long term period remains remarkably zonal. As such, models do have a more difficult time in the timing and magnitude of shortwaves forecast to have sensible weather implications for central Alabama. Having said that, it appears the best rain chances in the long term will be from Monday night into Tuesday (and perhaps beyond), as a stronger southern stream shortwave trough scoots through the area. The zonalness of the flow should keep the coldest of the air bottled up to our north, and there is no other obvious high impact weather to be found through the end of the 7-day period. /61/ && .AVIATION... (00Z TAFS) Issued at 531 PM CST WED FEB 5 2025 Multiple computer models continue to strongly suggest that low level moisture will stream back into central Alabama tonight, bringing more low ceilings to area terminals. As is often the case, trying to pinpoint when conditions drop to MVFR or IFR is the most problematic aspect of the forecast. So while confidence is high that conditions do get down below 2000 ft (or even below 1000 ft) eventually, confidence in timing of the above is much lower. Went with the model consensus of roughly 09Z-10Z (perhaps a bit earlier at ANB and ASN). Like today, it appears that once the low ceilings arrive they will be around for most of the day again on Thursday. /61/ && .FIRE WEATHER... Shower activity will persist across the northeast portion of the area overnight with a medium (40-60%) Chances for rain will be greater (40-60%) generally near and north of the Interstate 20 corridor today with lower (10-40%) chances across the southern portion of the area. chance of activity across the east-central and northeast counties with lower chances (10-30) across much of the rest of the area. Minimum relative humidity values will be in the mid to upper 50 percent range across the far southeast with higher values north and west followed by high humidity overnight areawide with the minimums in the mid to upper 50 percent range on Thursday afternoon across the southeast portion of the forecast area. && .CLIMATE.... Record high temperatures: Thursday, February 6... Birmingham: 77 Montgomery: 82Wednesday, February 5... Birmingham: 76 Montgomery: 82 Tuscaloosa: 81 Anniston: 74 Tuscaloosa: 80 Anniston: 76 Friday, February 7... Birmingham: 79 Montgomery: 81 Tuscaloosa: 82 Anniston: 80 Saturday, February 8... Birmingham: 83 Montgomery: 81 Tuscaloosa: 84 Anniston: 80 && .PRELIMINARY POINT TEMPS/POPS... Gadsden 57 74 57 73 / 50 30 50 40 Anniston 58 73 60 75 / 50 20 50 40 Birmingham 58 74 60 76 / 40 30 50 40 Tuscaloosa 58 77 60 79 / 30 20 20 20 Calera 58 74 61 77 / 30 20 30 30 Auburn 57 74 60 76 / 20 20 20 20 Montgomery 58 77 61 79 / 10 20 10 20 Troy 57 77 60 78 / 10 20 10 20 && .BMX WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...86 LONG TERM....02 AVIATION.../61/