textproduct: Huntsville

KEY MESSAGES

Updated at 1025 PM CST Mon Dec 8 2025

- Low to medium chances of freezing fog area-wide tonight into early Tuesday morning.

- Subfreezing temperatures tonight, then a gradual warming trend through midweek.

- Confidence is increasing in the potential of colder conditions early next week.

NEAR TERM

(Rest of tonight and Tuesday) Issued at 1025 PM CST Mon Dec 8 2025

An area of Marginal Visual Flight Rule MVFR (cloud bases 1000-3000 ft AGL) stratus persisted over the Tennessee Valley as of the mid evening. This persistent cloud deck effectively has made for about 4-5 days straight of no direct sun across the Tennessee Valley. There could be changes in the near future, as the clouds were showing signs of eroding mainly to our NW and SE. A clearing line was noted from west of Bowling Green and Nashville to Memphis, and to our SE from the western Carolinas and much of central and southern Georgia, as well as parts of central and southern Mississippi and Alabama. Under these clouds, 10 PM temperatures have cooled into the mid/upper 30s (after earlier highs in the low/mid 40s).

The forecast models for the most part all show these pesky stratus should begin fading across the area, as we go to and past midnight. Timing of them dissipating was picked up reasonable well by the new NBM, but was on a slower trend than previously noted. When the clouds fade, radiative cooling added to the mix will result in temperatures plunging below freezing. These cold temperatures plus residual moisture could result in fog and/or freezing fog forming. Am thinking that fog coverage should be patchy to areal in coverage. If freezing fog becomes more of an issue, Freezing Fog Advisory could be required late tonight.

The long streak of sunless days hopefully will come to an end, as enough drier air and somewhat better mixing is realized. Surface high pressure now over the area will build to our east during Tue, resulting in winds becoming light from the SE-S. With more sun, high temperatures should rise to around 50 degrees, the warmest in about a week.

SHORT TERM

(Tuesday night through Thursday) Issued at 1025 PM CST Mon Dec 8 2025

A deeper southerly flow should be in place for the mid week, as high pressure remains to our east. The southerly flow and higher heights/thicknesses will result in milder conditions. Lows should cool into the 30s (lower 30s east to upper 30s west) with light SE winds. A storm system forming over SW Canada will head eastward along the border, reaching the Great Lakes region on Wednesday. A cold front trailing south of this cyclone is forecast to move across this area Wed afternoon. Given that most of the energy should remain closer to the main storm, no precipitation is expected across this area. But with a SW-W flow and more sun, high temperatures for the mid week should rise into the mid to upper 50s. Cooler air west of the front filtering in will make for colder conditions Wed night with lows falling to around 30. Not as mild Thursday with highs in the mid 40s to around 50.

LONG TERM

(Thursday night through Monday) Issued at 1025 PM CST Mon Dec 8 2025

Slightly cooler than seasonal temperatures are forecast Thursday night, with lows falling into the low/mid 30s. Closer to normal readings will return on Friday with highs into the mid/upper 50s under partly sunny skies. With cloud cover on the increase, lows Fri night should range in the 30s.

Yet another storm system moving in from the WNW will bring lower end chances of showers across mainly the western areas Saturday afternoon. Rain chances should spread eastward across the Valley Saturday night, then end from west to east over our eastern areas Sunday morning. This system will bring colder air from up north to across the eastern CONUS early next week. Lows Sat night should cool from the upper 20s our Tennessee counties to mid 30s south of the Tennessee River. A chilly airmass will be more noticed Sunday, with highs only in the upper 30s north to mid 40s south. The start of the next work week, Monday will be on the cold side, with highs during the day into the mid/upper 40s.

AVIATION

(06Z TAFS) Issued at 1159 PM CST Mon Dec 8 2025

Current satellite data reflects an overcast layer of stratus in place across the entire forecast area late this evening, featuring cigs in the 1500-2000 ft range. The stratus layer is not expected to erode until after sunrise Tuesday morning, and should result in MVFR cigs during this timeframe while reducing concern for development of FZBR/FZFG. Beyond 15Z, VFR conditions will return with only sct high-lvl clouds thru the end of the TAF period. Sfc winds will remain from the NNW at speeds arnd 5 kts early in the period, before becoming calm and transitioning to a SSW flow of 5-10 kts by 15Z.

HUN WATCHES/WARNINGS/ADVISORIES

AL...None. TN...None.