It's spring and temperatures in the Northeast are peaking into the 80s today, but parts of Colorado and the upper Midwest don't seem to have gotten the memo.
A massive snow storm has moved in with record cold weather and may be pushing dangerous thunderstorms with tornados eastward.
The Denver area saw highs in the low 70s Monday.
Three hours later the temperature had plunged into the mid-30s.
They're now in the mid-teens, just a couple of degrees above the record low for April 9th.
Five to eight inches of snow is expected.
Some areas of the Black Hills could see 15-20 inches of snow, spreading out through parts of the Plains states.
On the warm side of the storm a wicked cold front as will produce severe thunderstorms this afternoon and this evening in parts of Kansas, Oklahoma and Texas.
Tornados, super cell thunderstorms and large damaging hail are possible.
-- Mike Seidel reports