Massive Winter Storm Beginning

A winter storm will affect most of the central and eastern US over the next two days.
Blizzard warnings (red) go from Oklahoma City to Chicago, and winter storm warnings (pink) from New Mexico to New Hampshire.
Most of the central and northern plains are under wind chill warnings (light blue).

This is how the radar looked as San Angelo was hit with thunder snow:
See how strong the temperature inversions are on the RUC analysis soundings for San Angelo:
And Abilene:Abilene continues to report thunder snow even with a surface temperature of only 19.