textproduct: Huntsville

KEY MESSAGES

Updated at 904 PM CST Wed Dec 17 2025

- Medium to high chances of showers Thursday and Thursday night. A very low chance of thunderstorms Thursday night.

- Much colder Friday into Friday night with lows back at or below freezing.

- A solid warm up from the weekend into next week with low chances of showers.

NEAR TERM

(Tonight) Issued at 904 PM CST Wed Dec 17 2025

A potent upper level shortwave trough was pushing through the central and northern Rockies this evening. A southern stream trough axis was located across AR through south TX. This trough will move northeast into LA tonight, with moist southerly flow increasing across the lower MS Valley. This will spread lower clouds and increasing shower activity into the Deep South. For the local area, very low chances of light showers will occur toward morning. Temperatures will remain nearly steady overnight in the 40s.

SHORT TERM

(Thursday through Saturday) Issued at 904 PM CST Wed Dec 17 2025

The southern stream trough will rapidly move east-northeast into GA and the FL panhandle by the end of the day. This along with low level moisture transport will bring areas of showers northward into the TN valley through the day. The precipitation should be mostly on the light side. Instability is basically nil, so not expecting daytime thunderstorms. The potent northern trough will swing into the Upper Midwest and mid MS Valley during the afternoon, and into the Great Lakes and OH Valley during the evening. The southern extent of the trough will reach the TN Valley, but with more channeled flow and weaker vorticity advection. However, convergence along the cold front and still moderate -divQ will be sufficient to generate fairly widespread showers and perhaps a thunderstorm or two. At this time, the probability of severe weather is quite low due to the lack of CAPE. The cold front will sweep southeast of the area before Midnight with strong cold air advection and blustery northwest winds developing. Temperatures before daybreak should dip into the lower 30s, and only recover into the middle to upper 40s on Friday (lower 40s atop the higher Cumberland Plateau). As high pressure shifts east through the area Friday night, winds will drop and temperatures should bottom out in the upper 20s east to 30-32 central and west. Westerly 5h flow will become established by Saturday with moderate warm air advection developing as a thermal ridge shifts east ahead of another cold front dropping southeast into the Great Lakes through the lower OH Valley into Texas. Afternoon highs on Saturday should reach the upper 50s to around 60. The cold front will bring low chances of light showers Saturday night.

LONG TERM

(Sunday through Wednesday) Issued at 904 PM CST Wed Dec 17 2025

On Sunday, a trough up in the Great Lakes region will push a cold front into the Southeast. This will spark off a few showers (20%) and the cooler northerly flow will keep daytime highs in the 50s. Overnight lows will remain above freezing. The front will try to lift back northward on Monday, providing another low chance (10-20%) of showers across the TN Valley. Sfc high pressure in the OH Valley will slide over to the Mid Atlantic coast by Tuesday, providing not only dry conditions into mid week, but warmer temps too. We will reach the lower 60s on Tuesday, and wait for this...reach the low to mid 60s on Christmas Eve/Wednesday!

AVIATION

(00Z TAFS) Issued at 450 PM CST Wed Dec 17 2025

Flight weather conditions will remain VFR through ~12Z with ceilings at or above 080agl. Lower MVFR ceilings (020-025agl) will overspread the area by 12-15Z with isolated to scattered SHRA developing. Ceilings will lower to IFR (005-010agl) with an increase in SHRA activity by 19Z.

HUN WATCHES/WARNINGS/ADVISORIES

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