What a West-East contrast we have over the Lower 48 just now. We currently have a mid-winter level trough over the West bringing the coldest air not just for this winter but in a few years to parts of California while beneath an unusually strong upper ridge and SW flow, we have record February warmth from the Deep South to New England.

In between the air masses we have stormy weather with a corridor of heavy snow, ice and flooding rains.

On the winter side…

https://twitter.com/AMHQ/status/965588481895485440

https://twitter.com/millerjosh37/status/965066034788024320

https://twitter.com/JimCantore/status/965576005959249920

and on the summer side…

https://twitter.com/FOX13Tyler/status/965712555124682752

and where winter meets spring…

https://twitter.com/WilliamScherer3/status/965744283234873344

https://twitter.com/okmesonet/status/965777666971488259

You don’t get much of a bigger contrast in temperature anomaly in February with 20-30 below vs 20-30 above normal.

This morning… GFS has widespread -10s over Montana, Wyoming and 60s all the way to northern Indiana and Ohio.

By afternoon, -0s and 0s in Montana, Wyoming while 70s in northern Ohio.

Tomorrow afternoon is barely above 0 in North Dakota while it may approach the mid-70s as far north as Albany, NY.