638
FXUS64 KHUN 110440
AFDHUN

Area Forecast Discussion
National Weather Service Huntsville AL
1040 PM CST Wed Dec 10 2025

...New NEAR TERM, SHORT TERM, LONG TERM...

.KEY MESSAGES...
Updated at 1040 PM CST Wed Dec 10 2025

 - Low chances of precipitation return to the forecast Saturday
   night as a cold front pushes through the area.

- The precipitation late Saturday night could become a wintry mix
  before ending, as temperatures fall before daybreak Sunday.

 - Confidence is increasing in a potential of very cold conditions
   early next week (~25% probabilities for low temps in the teens
   Monday morning).

&&

.NEAR TERM...
(Rest of tonight and Thursday)
Issued at 1040 PM CST Wed Dec 10 2025

An area of low pressure moving eastward across northern New York
state has brought a cold front across this region earlier today.
With that boundary to our east, colder air wrapping around this
exiting low has pushed lower clouds more to our SE. These post
frontal low altitude clouds were heading SE from southern Illinois
to the southern Cumberland Plateau (that includes far NE Alabama,
eastern Tennessee and northern Georgia). General model output was
keeping them mainly near and east of the I-65 corridor. Although
cloud bases from Nashville and to the south and SE were above
3000ft AGL, somewhat lower cloud base more to the NW could move
across parts of the Tennessee Valley in the overnight. There
appears low chances of them reaching Huntsville with even lower
chances over NW Alabama.

Otherwise, 10 PM temperatures have cooled into the lower 40s with
NW winds of 5-15 mph. As noticeably colder air filters in from the
north, temperatures overnight should tumble into the mid/upper
20s. The winds should subside to around 5 mph towards daybreak
Thursday. New models output was hinting at patchy fog forming
around daybreak; which could occur should winds become lighter
than anticipated. The aformentioned clouds should gradually
dissipate as we go into the day with partly cloudy conditions
expected. Highs later should rise into the mid/upper 40s with
light winds.

&&

.SHORT TERM...
(Thursday night through Saturday)
Issued at 1040 PM CST Wed Dec 10 2025

The storm system over eastern Canada should be exiting Labrador
Thursday night into Friday. Cold air wrapping around this system
will retreat more to our NE, with not as chilly conditions Thu
night. Lows should only fall into the 30s (lower 30s east to upper
30s west). Likewise, Friday should be a milder day with highs
rising into the mid/upper 50s. A clipper system moving to the SE
from the northern High Plains should move across the central
Cumberland Plateau Friday. A dry front trailing southward from it
should move across this area Fri afternoon and evening. Colder air
filtering in from the NW will bring slightly cooler conditions to
close out the week. Lows Friday night should fall more into the
lower 30s areawide. Highs Saturday will be in the low/mid 50s.

&&

.LONG TERM...
(Saturday night through Wednesday)
Issued at 1040 PM CST Wed Dec 10 2025

The forecast will get tricky Saturday night into early Sunday, as
a moisture return plus much colder air filtering in could result
in a wintry mix before daybreak Sunday. The latest run of the NBM
was continuing a lower-level moisture feed from the Gulf region
to across the Tennessee Valley. This output appears close to what
the 00Z NAM was showing (both showed more moisture return compared
to the drier older GFS, Canadian, ECMWF. Going with those latter
deterministic models would result in a dry forecast, with
sufficient moisture for precipitation remaining staying south of
the region. The previous NBM was showing this but with a larger
coverage. Going with a wetter scenario, a moisture return should
be sufficient to get rain going Saturday evening across the area.

A mix of rain/sleet/freezing rain/snow should begin after midnight
Saturday night. Forecast temperatures begin falling to and below
freezing at midnight over our Tennessee counties, and the rest of
the area by 3 AM. The precipitation should end from NW to SE as
even colder and drier air filers in towards daybreak Sunday.
Elevated and grassy surfaces (including bridges and overpasses)
could receive a light accumulation, especially if liquid totals
over a few hundredths of an inch occur. The temperatures falling
into the 20s could also produce more accumulations too. The blends
run to run (moisture wise) were trending drier, so by the weekend
the precip threat could be south of this area - if the drier trend
continues. Forecast temperatures by sunrise Sunday will tumble
into the upper teens north to mid 20s south of the Tennessee
River.

A very cold start to a new week is expected, with high
temperatures only reaching the mid/upper 20s north to low/mid 30s
south. A blustery northerly wind of 5-15 mph with higher gusts
will produce wind chill values 10-15 degrees colder than the
actual air temperatures. Very cold conditions will continue Sun
night with lows in the low/mid teens. Winds thankfully should be
lighter by this time that will help in the wind chill department.
Still cold for the start of the work week, with highs struggling
to around 40. Another chilly period Monday night, with lows in
the low/mid 20s; and highs Tuesday moderating to around 50.

The models were all showing moisture return from the south Tuesday
night, bringing lower end chances of rain to the Tennessee Valley
Tue night into Wednesday. With temperatures moderating, this
should be an all liquid event. Lows Tue night should range in
the 30s (colder east), with highs Wed into the low/mid 50s.

&&

.AVIATION...
(00Z TAFS)
Issued at 439 PM CST Wed Dec 10 2025

VFR conditions are forecast to continue through the TAF period at
both KMSL and KHSV. Gusty, northwesterly winds up to ~20 kts are
forecast to continue intermittently through later this evening
before light winds return to the area.

&&

.HUN WATCHES/WARNINGS/ADVISORIES...
AL...None.
TN...None.
&&

$$

NEAR TERM...RSB
SHORT TERM....RSB
LONG TERM....RSB
AVIATION...HC