Winter Storm Bringing Snowfall From Great Lakes to Appalachians and Rain, Wind to East Coast

Published in 30 November, 2020

At a Glance

  • A strong low-pressure system will impact the East through early week.

  • Snow will blanket the Great Lakes, Ohio Valley and Appalachians.

  • The East Coast will see a wind-whipped soaking.

A winter storm will impact the Great Lakes, Ohio Valley and Appalachians with accumulating snowfall to start the week while also bringing a wind-whipped soaking to the East Coast.

This weather system has been named Winter Storm Dane by The Weather Channel.

The setup for this storm involves a strengthening area of low pressure tracking up the Appalachians and into the Northeast region. On the storm’s western flank, wind-driven snowfall is expected in parts of the Great Lakes, Ohio Valley and Appalachians. Mild air ahead of the system means the East Coast will see rain, gusty winds and a few severe thunderstorms.

Winter storm warnings and winter weather advisories have been issued by the National Weather Service for the wintry side of this storm. This includes parts of the southern Great Lakes into the Ohio Valley and Appalachians.

Here’s a look at what to expect.

Monday’s Forecast

The storm’s cold side will lead to snow or rain changing to snow from the southern Great Lakes and Ohio Valley to the Appalachians as far south as the Smoky Mountains. Rain will change to snow as far east as western Pennsylvania and southwest New York state by Monday night.

Strong winds will accompany the snow, particularly near the shores of the Great Lakes and over the Appalachians.

Snow flurries could fly through the air as far south as northern Georgia by later Monday or Monday night.

winter storm 2

Widespread rainfall is expected in the East as far north as northern New England. This rain could be accompanied by strong wind gusts, particularly from the mid-Atlantic coast through coastal New England. That might cause some scattered power outages and/or tree damage in spots.

Any embedded thunderstorms could also produce damaging wind gusts or an isolated tornado from the central Florida Peninsula into the coastal mid-Atlantic and southern New England.

Significant lakeshore flooding and pounding waves will impact areas near the southern coast of Lake Michigan, especially in northwest Indiana and far southwest Michigan.

winter storm 2

Tuesday’s Forecast

As December arrives Tuesday, the powerful low will still be lingering in eastern Canada.

Wind-whipped snow is likely to linger from the eastern Great Lakes into the upper Ohio Valley and the Appalachians. Heavier snow may fall in bands south or southeast of the Great Lakes. This lake-effect snow will persist in the eastern Great Lakes into Wednesday.

Most of the rain should be either in New England or off the East Coast by Tuesday.

winter storm 2

How Much Snow, Rain?

In some parts of the Ohio Valley and Great Lakes, this will be the heaviest snowfall of the season so far.

Snow totals could be 6 inches or more in parts of northeastern Ohio, northwest Pennsylvania and southwest New York state. Lake-effect snowbelt locations might see as much as a foot of snowfall, especially in areas with higher terrain. Travel on the Interstate 90 corridor through Cleveland, Erie, Pennsylvania, and areas near and south of Buffalo, New York, could become difficult by later Monday into Tuesday.

Accumulating snow is also expected in the Appalachians as far south as Tennessee, western North Carolina and far northeast Georgia. This could also lead to treacherous travel, particularly in the mountains by Monday night, as temperatures drop below freezing, leading to some icy stretches on roads.

Lake-effect snow could also produce totals of 6 inches or more in northwest Indiana and far southwest Michigan through Tuesday.

Much of the Eastern Seaboard should pick up an inch of rain. The cold front’s fast movement should keep rainfall totals from triggering too much flooding, though some flooding of the typical trouble spots in urban areas can be expected.

winter storm 2

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