SIOUX FALLS, S.D. – Strong storms are moving into the Midwest, dumping heavy snow in South Dakota, spawning a tornado in Nebraska and threatening dangerous thunderstorms from Oklahoma to Wisconsin.
A foot of snow had fallen by Friday morning in western South Dakota's Black Hills thanks to a storm slowly moving in from Colorado and Wyoming.
National Weather Service meteorologist John Chamberlain says the fall storm is one of the most intense to hit the area in a long time.
No travel is being advised along some western South Dakota roads, and some schools canceled classes. As much as 30 inches of snow could fall in the area.
Large hail and powerful winds were forecast to hit northwest Oklahoma later Friday, while storms were forecast from there into Wisconsin into Saturday.