Cold air from the northwest Pacific region and western Canada mixed with warm ground air across south central Nebraska caused the storm, said Jim Brewster with the National Weather Service in Hastings. Some may have thought it odd to hear thunder and see lightning when there is snow on the ground. That was enough to produce the thunder-snow storms we saw Sunday. Road crews worked most of the day to clear clogged streets. Several vehicles were reportedly stranded in county ditches.
Warmer weather is predicted for the remainder of the week.
Highs today are expected to reach 55 degrees, with lows in the 30s. Temperatures should remain in the 70s Thursday but thunderstorms are predicted.