U.S.: Storm and heavy snow
Christian Fernsby ▼ | November 22, 2023
A mid-level trough will amplify into a closed low as it drops into the Intermountain West over the next 48 hours.Article continues below
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 ■ What to read next
Upper-level ridging weakens from the Ohio Valley to the Southeast on Friday, resulting in a reduced area of Heat Advisories over the east.
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