textproduct: Huntsville

KEY MESSAGES

Updated at 532 AM CST Wed Feb 4 2026

- A Dense Fog Advisory is in effect until 8AM this morning.

- Light drizzle/very low clouds coupled with patchy to dense fog will linger through this morning.

- Dry conditions and a warming trend will follow from Thursday through Monday.

NEAR TERM

(Today) Issued at 345 AM CST Wed Feb 4 2026

[530AM UPDATE] - As several surface observations reported visibilities down to a quarter mile, have issued a short-fused Dense Fog Advisory in effect for Madison, DeKalb, Jackson, and Marshall counties in Alabama and Franklin, Lincoln, and Moore counties in Tennessee until 8AM this morning. If you encounter dense fog, make sure to slow down, use your low-beam headlights, and leave plenty of distance ahead of you!

Temperatures across north Alabama and southern middle Tennessee are fairly warm (compared to what we've seen in recent days) with values in the mid 40s to around 50 degrees! However, surface observations show that temperatures in the 30s are just to our northwest, since a cold front is making its way over the Tennessee Valley at present. With current observations a bit warmer than forecast, did modify temperatures and dew points through the morning hours to better capture current conditions. Thus, thinking that temperatures should dip into the upper 30s (west) to lower 40s (east) through dawn. Additionally, continuing to monitor low visibilities, as well as low clouds. Several sites have dropped to 1-3 miles, with a few other sites over northeast Alabama and southern middle Tennessee a bit lower to between 0.25-1 miles. So far, dense fog has not become widespread, but we'll continue to keep an eye on visibilities through the early morning in case a Dense Fog Advisory becomes necessary. If you encounter fog while traveling, make sure to use low beams and keep plenty of distance in front of you!

Mist and/or drizzle were observed at many sites last evening, but has since tapered a bit. Instances of drizzle may continue this morning but no measurable rain is anticipated. A dreary day is ahead as low clouds stick around through the afternoon. This will also result in high temperatures not making it out of the 40s. Furthermore, with FROPA, it'll be breezy with gusts to 15-20 mph. After today, drier weather and clearer skies are on the horizon, so stay tuned!

SHORT TERM

(Tonight through Friday) Issued at 955 PM CST Tue Feb 3 2026

Under northwestern flow, cooler temperatures continue through Thursday with highs reaching the 40s and overnight lows dropping into the 20s. The stout upper level trough begins to shift northeastward out of the TN Valley by Thursday afternoon and sfc high pressure begins to move in from the west. On Friday, a warming trend begins as an upper level ridge shifts eastward into the Tennessee Valley. Highs on Friday are forecast to warm into the 50s.

LONG TERM

(Friday night through Tuesday) Issued at 955 PM CST Tue Feb 3 2026

The warming trend continues through early next week as the aforementioned upper level ridge and subsequent sfc high pressure continues to influence the area. Dry conditions are forecast as highs warm into the 60s by Sunday. These temperatures are around 5-10 degrees above normal for this time of year. The main feature in the long term to monitor will be the track of a potential cold front forecast to push southward from Canada into the Appalachian region. If this front shifts more southward than currently forecast, temperatures will be much cooler than currently expected. We will continue to monitor these trends through the week. At the tail end of the long term period into mid week, we are monitoring rain chances returning as an upper level shortwave is currently projected in global models.

AVIATION

(12Z TAFS) Issued at 530 AM CST Wed Feb 4 2026

Low clouds leading to IFR/LIFR conditions will persist this morning along with instances of light drizzle. In addition, dense fog may reduce visibility for NE AL and southern middle TN (including the HSV terminal) to 1/4mi at times through 14Z. By this afternoon, any fog will have dissipated with CIGs beginning to improve slightly. Although, MVFR CIGs this afternoon are forecast to continue through this evening and into the overnight. Clouds look to start breaking up towards the end of the TAF period. As for winds, expect northwest winds around 10 knots or so by early this afternoon, as well as wind gusts to between 14-18 knots. Winds slightly decrease tonight, but remain between 5-10 knots with gusts up to 17-18 knots (perhaps a touch higher over the terrain of NE AL).

HUN WATCHES/WARNINGS/ADVISORIES

AL...Dense Fog Advisory until 8 AM CST this morning for ALZ006- 008>010.

TN...Dense Fog Advisory until 8 AM CST this morning for TNZ076-096- 097.