Winter Storm Walda: Everything But the Kitchen Sink! [1]

Weather.com - 4/09/13, Jon Erdman and Nick Wiltgen

Recent spring warmth has come to a crashing halt for parts of the Rockies and Plains as Winter Storm Walda brings heavy snow, very high winds, and a drastic drop in temperatures that has even led to freakish sub-freezing severe thunderstorms.

We have a classic spring storm pivoting out of the West into the Plains.  This bullish dip in the jet stream is bringing not only a winter storm, but an outbreak of severe thunderstorms [2] this week in the warmer air to its east - and in some cases, even over the colder air behind its cold front.

Video and more: Weather.com [3]