Another round of winter weather is on the way Monday for portions of the central U.S.  

Already for northern tier states, temperatures are 20 to 30 degrees below average.  

Winter weather advisories have been issued from Montana across the Northern Plains into the Great Lakes region as a mixture of snow, sleet, and freezing rain will come in two waves over the next few days.  

The national forecast for Monday, Feb. 21.

The national forecast for Monday, Feb. 21. (Fox News)

MOST WIDESPREAD DROUGHT IN 9 YEARS EXPECTED TO EXPAND 

Snow will become heavy, creating near blizzard conditions over parts of the Dakotas. Over a foot of snow is possible in some areas. Significant ice accumulations are possible in the Upper Midwest where areas may receive a quarter inch of ice.  

Current winter weather alerts in effect. 

Current winter weather alerts in effect.  (Fox News)

Further south, this same front will bring thunderstorms and possible severe thunderstorms to parts of the Southern Plains to the Mississippi and Tennessee Valleys through Tuesday morning. The main threats of these storms will be frequent lightning, strong wind gusts, hail and isolated tornadoes.  

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Expected snowfall totals for this week.

Expected snowfall totals for this week. (Fox News)

In front of this system, temperatures will soar. Temperatures will be 10 to 25 degrees above average over the Mississippi Valley into the Ohio Valley from Monday into Wednesday morning.  

Temperatures will climb into the 60s for the mid-Atlantic by midweek.