Winter Storm in South Dakota, December 30, 2006

An upper level trough of low pressure moving across northern South Dakota along with deep and strong frontogenesis brought widespread snow, freezing rain, and rain to northeast South Dakota. The precipitation began as snow and freezing rain early in the morning on the 30th. During the afternoon and early evening, the temperatures warmed up some to bring rain across much of the far eastern counties. The precipitation then changed back to freezing rain during the evening and then to snow before ending late in the evening of the 30th. Snowfall amounts over Brown and Spink counties ranged from 5 to 12 inches while snowfall amounts over the rest of northeast South Dakota ranged from 1 to 4 inches. Ice accumulations ranged from a quarter to nearly an inch for some places in northeast South Dakota. The roads were very slippery, tree branches were downed along with a few trees, and there were several power outages for several hours.