textproduct: Huntsville

KEY MESSAGES

Updated at 941 PM CST Tue Nov 25 2025

- Dense Fog Advisory in effect for all of North Central AL, Northeast AL, and Southern Middle TN through 2 AM CT Wednesday

- Freezing temperatures are forecast Wednesday, Thursday, and Friday nights with temps dropping into the mid 20s to low 30s

- Monitoring additional system early next week, which will likely bring heavy rainfall to the area

NEAR TERM

(Rest of tonight and Wednesday) Issued at 941 PM CST Tue Nov 25 2025

Showers and thunderstorms that were impacting portions of the TN Valley this afternoon have since pushed eastward, out of the area. A cold front is forecast to push southeast into the area overnight, which will result in cooler temperatures through the end of the week. Ahead of the cold front, dense fog has occurred along I-65 and eastward. A Dense Fog Advisory has been issued for these areas due to visibilities dropping near 1/4 mile. Fog is expected to begin dissipating with the arrival of increased cloud cover and winds ahead of the front, which should push through around 4-5 AM.

Wednesday, sfc high pressure begins to influence the region and skies are forecast to clear out from northwest to southeast. This will allow sunny conditions by the afternoon hours and high temperatures to warm into the mid to upper 50s (about 10-15 degrees cooler than it was Tuesday afternoon).

SHORT TERM

(Wednesday night through Friday) Issued at 941 PM CST Tue Nov 25 2025

Dry conditions are forecast to continue through the short term period as sfc high pressure resides over the region. Post-frontal temperatures will be much cooler, with overnight lows dropping below freezing (into the mid 20s to low 30s) through most or all of the area Wednesday and Thursday night. Highs during this time will reach the low 40s to 50s. If you have any Thanksgiving plans, multiple layers will be encouraged. A pattern change comes over the weekend, which you can read more about in the long term section below.

LONG TERM

(Friday night through Tuesday) Issued at 941 PM CST Tue Nov 25 2025

One more dry day on Saturday as high pressure will remain the dominant weather feature -- through increasing cloud cover will cap any potential heating and keep high temperatures in the mid 50s. A pattern change is coming late this weekend as high pressure quickly scoots off to the east on Saturday and another trough swings from the Central/Southern Plains into the Mid Mississippi and Ohio Valley. This will force a cold front through the Tennessee Valley and Deep South. Ahead of this front, southerly winds will help to advect in some return flow moisture from the Gulf. Forcing from the trough and along the front will generate light rain showers Saturday night, that will become much more numerous (60-70% chance) Sunday and Sunday night as the front passes across the region. Rainfall totals up to 1" seem plausible with this initial round of precipitation. A brief "lull" will occur on Monday, before an additional storm system will form along the Gulf -- bringing widespread showers and a few storms (60-80%) Monday night into Tuesday. This slower moving system may bring some locally heavy rainfall on the order of 1-2" which could result in some minor rises on creeks and streams. Dense cloud cover and high rain chances will keep high temperatures on the cool side in the upper 40s.

AVIATION

(06Z TAFS) Issued at 1146 PM CST Tue Nov 25 2025

VFR conditions are expected at both terminals for much of the TAF period. Winds around 5 kts will become more northwesterly overnight as winds increase to between 5 and 10 kts. VFR CIGS should lower briefly to MVFR after 11Z at both terminals. Also, expect winds to pick up and gust to between 15 and 20 kts as a front moves through the terminals after 11Z. Cloud cover and winds should keep fog from forming towards daybreak. VFR conditions should return quickly around 13Z as clouds dissipate and move east of the area.

HUN WATCHES/WARNINGS/ADVISORIES

AL...Dense Fog Advisory until 2 AM CST Wednesday for ALZ005>010-016.

TN...Dense Fog Advisory until 2 AM CST Wednesday for TNZ076-096-097.