Heavy, windswept snow will pummel the Upper Midwest, upstate New York and western New England, as an ice storm unfolds over the central and northern Appalachians.
Enough ice can accumulate to weigh down trees and power lines, leading to sporadic power outages. Snow can change to ice and then rain across the upper mid-Atlantic coast.
Heavy rain and thunderstorms are forecast to rumble along the warmer side of the storm from the upper Ohio Valley to the Deep South. Localized flooding can occur, mainly across the northern part of this swath.
A dry day is forecast across the High Plains and Southwest. More snow will fall in the interior Northwest with a rain and snow mix along the coast.
DAILY EXTREMES
National High Monday 86 at Immokalee, FL
National Low Monday -25 at Havre, MT