Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
238 PM EST Wed Jan 26 2022

Valid 00Z Thu Jan 27 2022 - 00Z Sat Jan 29 2022

...Bitter cold across much of the Northeast tonight before the next surge
of arctic air enters the Upper Midwest on Thursday...

...Snow showers to traverse the Great Lakes and Central Rockies/High
Plains on Thursday near an approaching cold front...

...An area of light snow is forecast to develop over the Mid-Atlantic and
Central Appalachians by Friday afternoon as a coastal storm begins to
organize off the Southeast Coast...

Under an area of high pressure, much of the Northeast and northern
sections of the Mid-Atlantic will be in for another cold night and start
to the day on Thursday. Lows are forecast to dip below zero and into the
single digits for most locations, with teens found farther south into the
Tennessee Valley and southern Virginia. Temperatures will also start below
average across parts of the Lower Mississippi Valley and Southern Plains,
where subfreezing lows are likely. Outside of the Southern Plains, these
temperatures are expected to warm slightly by the end of the week as the
aforementioned area of high pressure weakens and slides off the East
Coast. Meanwhile, the next shot of arctic air is lined up and expected to
drop out of south-central Canada on Thursday. This will lead to below
average temperatures throughout the Upper Midwest/Great Lakes on Friday.

This arctic cold front will also be responsible for scattered snow showers
between Thursday and Thursday night across the Great Lakes. Light snow may
impact parts of the Central Rockies and Central High Plains during this
time frame as well, thanks to a potent upper-level disturbance crossing
the region. However, minimal snow accumulations are forecast. This same
upper-level disturbance is forecast to round the base of a trough located
over the eastern U.S. and spawn a developing coastal storm east of the
Carolinas by Friday night. Light snow may break out across the central
Appalachians and Mid-Atlantic by Friday afternoon, leading to minor snow
accumulations. The majority of the impacts associated with this upcoming
winter storm will likely occur after Friday night. 

Elsewhere, chances for scattered showers and thunderstorms will continue
for southern Florida as a stationary boundary linger overs this section of
the country. Light rain may also dampen southern Texas on Friday as a
fast-moving cold front progresses into northern Mexico to end the week.

Snell

Graphics are available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php