Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
300 PM EST Wed Nov 22 2023

Valid 00Z Thu Nov 23 2023 - 00Z Sat Nov 25 2023

...Heavy snow and coastal rain to wind down across Maine this evening...

...A white Thanksgiving is on tap for the Northern/Central Rockies and
Northern/Central High Plains while arctic air intrudes...


A mid-level trough will amplify into a closed low as it drops into the
Intermountain West over the next 48 hours. This amplified system will
promote heavy snow and much colder temperatures across the Rockies and
Plains during this period. Meanwhile, things will be relatively quiet
across the rest of the country, save for some windy and chilly conditions
behind a cold front for Maine on Friday and Saturday. Cold air will also
work its way down into the Northeast/Mid-Atlantic Coast on Friday and
Saturday.

A strong surface cold front over Canada will push southward tonight,
bringing much colder air to the Rockies. Light snow will gradually expand
in coverage over Montana as the cold air sinks southward. Snow will
increase on Thanksgiving over Wyoming and progress southward into Colorado
overnight into Friday. There is a high (>70%) chance of at least 6 inches
of snowfall through early Saturday over parts of Wyoming. Lighter amounts
are forecast elsewhere in the Rockies and over the High Plains. Snowfall
rates of 1"/hr will make travel difficult on busy interstates such as
I-25, I-80 and I-90. Blowing snow will reduce visibility as well. The
arctic front may cause flash freezes in Utah, Southern Wyoming, Colorado
and the Nebraska Panhandle Thursday (Thanksgiving) evening as temperatures
rapidly drop below freezing. Winter Weather Advisories and Winter Storm
Watches are in effect for

Have a safe and happy Thanksgiving!


Kebede


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