Encouraging words from the NWS Huntsville tonight:
Area Forecast Discussion
National Weather Service Huntsville AL
954 PM CST Wed Jan 5 2022
.NEAR TERM...(Rest of tonight)
Issued at 954 PM CST Wed Jan 5 2022
Clear skies continue across much of the area. A few
high clouds
continue to push southeast into Cullman county and northeastern
Alabama at this hour. Very light or
calm winds are in place in most
locations of northern Alabama and southern middle Tennessee as well.
These conditions, along with some drier air advecting into the
region, have allowed temperatures to drop into the mid to upper 30s
in most locations. In some locations, despite some drier air moving
into the area, temperatures have dropped down to dewpoint values and
some lowering visibilities are occurring as the
boundary layer
saturates and
fog formation is starting. Think this will mostly
happen near and east of the I-65 corridor. Around or just after
midnight, think that even drier air will push southeast ahead of the
resurging cold
front dropping further south from southern Missouri.
This should put an end to any
fog development then.
Complicated setup continues over the southeast this evening, as a
surface low that was over eastern Texas continues to move to the
east southeast over the last few hours. 3 hour
pressure change trends
suggest this will continue. As mentioned earlier a strong cold
front
with very dry air behind it is re-surging southward over the last
few hours. We will be watching this very closely overnight into
Thursday morning. Could see some
isolated to
scattered rain or
freezing rain push into northwestern Alabama with this forcing around
4 to 6 AM. However, the bulk of the precipitation and wintry weather
should push east into the area after 6 AM on Thursday.
The further south this
front gets, the better chance lower dewpoints
and freezing temperatures around daybreak and into the day on
Thursday will combine with strong low/mid level forcing to produce
significant wintry weather across the area. Models hint that strong
forcing seen in guidance could lead to higher freezing rain or
snowfall totals over portions of the area, especially northwestern
Alabama east to near the I-65 corridor and in southern middle
Tennessee. Kept close to previous forecast with colder overnight
lows than more recent guidance with lows dropping into the upper 20s
to lower 30s around daybreak. Also, kept previous forecast for snow
totals (1-2 inches) in southern middle Tennessee and freezing rain
totals (0.01 to 0.20 inches) elsewhere, but subsequent shifts may
need to increase these amounts.