textproduct: Huntsville

KEY MESSAGES

Updated at 1048 AM CST Thu Dec 25 2025

- Temperatures will remain above normal through Sunday, with highs in the mid 60s-mid 70s and lows in the mid 50s-lower 60s.

- A strong cold front is expected to cross the region early Monday morning. A band of showers and perhaps a few thunderstorms will precede the front, and this will be followed by a rapid drop in temperatures early next week.

NEAR TERM

(Rest of Today and Tonight) Issued at 240 PM CST Thu Dec 25 2025

There have been no significant adjustments to the near term forecast this afternoon, as the combination of mostly cloudy skies and light southwest winds have yielded temperatures in the u60s-l70s. Should sufficient clearing occur late this afternoon, rapid development of locally dense fog will once again be possible this evening in a few locations. However, at this point, we still anticipate the stratus layer to increase in both coverage/density this evening as cloud bases fall below 1000 ft, and this could result in significant visibility reductions in elevated terrain. Conditions will also become increasingly favorable for light drizzle early Friday morning, which may lead to minor visibility reductions in the valley, as well. Overnight lows appear on track to only fall into the m-u 50s.

Previous Discussion: In the mid/upper-levels, a subtropical ridge centered across the Gulf will gradually deamplify over the course of the near term period as a distinct mid-level shortwave trough lifts northeastward from the central Rockies into the Upper MS Valley. However, this will have little impact on sensible weather conditions across the TN Valley, as flow aloft backs to WNW but remains in the 25-35 knot range. At the surface, a weak area of low pressure (initially across the Upper OH Valley) will quickly phase with a strong cold front sweeping southeastward off the New England coast today. In the wake of this low, a more diffuse/trailing cold front will extend west-northwestward through the OH Valley and into the Mid-MS Valley this morning, focusing shower activity well to our north. As surface pressures fall across western KS (in response to the northeastward advancing mid- level shortwave trough), this boundary will evolve into a warm front over the course of the afternoon/evening, perhaps providing a minor uptick in the coverage of precipitation to the northeast of our CWFA. Although a stray light shower or sprinkle of rain may impact the northeastern corner of the CWFA late this afternoon/early this evening (before the warm front lifts further northeastward), POPs remain very low (5-10%).

Otherwise, light southwesterly flow in the low-levels will be maintained across our region today, with a gradual increase in wind speeds expected tonight as a high along the central Gulf Coast weakens and drifts southeastward and a deepening surface low shifts northeastward into northern IL. The combination of moisture advection and weak low-level ascent in this regime has contributed to a quick transition to overcast low stratus clouds (from locally dense fog observed earlier this morning), and this cloud layer should become even more dense and descend as we head into the late afternoon/overnight hours. Based on current observations, highs will be a bit cooler today (ranging from the mid 60s in elevated terrain to the u60s-l70s in the valley). Conversely, overnight lows will be a bit warmer and in the m-u 50s. Although some patchy drizzle will be possible as the stratus layer descends (especially overnight), we will keep POPs for measurable precipitation less than 10%.

SHORT TERM

(Friday through Saturday night) Issued at 1048 AM CST Thu Dec 25 2025

During the period from Friday-Friday night, a surface low (initially across northern IL) will travel eastward through the Lower Great Lakes and into western portions of the northern Mid- Atlantic states, with the trailing cold front predicted to advance southeastward across the central Plains before eventually stalling from Ozarks into the northern TN Valley. A notable increase in low-level southwesterly flow is anticipated across the TN Valley during the day tomorrow as this occurs, with sustained speeds of 10-15 MPH and occasional gusts of 20-25 MPH. Overcast low stratus clouds and patches of light drizzle will also be common throughout the day as surface dewpoints rise slowly into the lower 60s, with a few light showers (capable of producing wetting rainfall at the surface) possible on Friday afternoon/evening.

Present indications are that a new surface low will evolve across western KS during the day on Saturday, in advance of an amplifying northern stream trough digging southeastward over the northern Rockies. As this occurs, low-level flow will back to the SSW and begin to strengthen once again (after a temporary decrease in wind speeds late Friday night). This configuration will maintain a warm/moist airmass across the region, with at least a broken coverage of low stratus clouds and perhaps a few light showers during the afternoon hours. Highs both Friday and Saturday will be in the l-m 70s, with overnight lows in the m50s-l60s.

LONG TERM

(Sunday through Wednesday) Issued at 907 PM CST Wed Dec 24 2025

Models have delayed the timing of the anticipated cold front by about 24 hours over the past 2 days. What was previously forecast to move through on Sunday now looks like it will not arrive until Monday morning, giving us one more day of highs in the 70s on Sunday. Have no fear though, if you are tired of the warmth and ready for winter to return, it will by Monday afternoon. PoPs will increase to 60-80% Monday morning as the front moves through and should dry up by late Monday afternoon. Any chance of a light wintry mix will be minimized especially if the current timing trends hold and the front moves through during the daylight hours. Rainfall amounts still look to remain below 0.25" and while the cold front will be strong, no severe weather is forecast at this time. Temps will plummet behind the front, with highs in the 40s on Monday then dropping to the 30s on Tuesday. Overnight lows will fall to the upper teens/low 20s with wind chills in the low teens Tuesday morning.

AVIATION

(00Z TAFS) Issued at 428 PM CST Thu Dec 25 2025

Through 08Z, ceilings of 020-025agl (MVFR) will persist in north central and northeast AL and southern TN including KHSV. In northwest AL including KMSL, ceilings have risen to 030-045agl (VFR). Ceilings are forecast to redevelop in the 010-020agl range (MVFR) by 08Z. There is a low chance of lower visibility and IFR conditions, but not high enough to include in this set of TAFs. Improvement back to MVFR is expected Friday afternoon by 22Z, although there could be patches of improvement before that time.

HUN WATCHES/WARNINGS/ADVISORIES

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