Storm warnings and blizzard conditions extended to at least 12 states, the National Weather Service said. Officials urged drivers to be cautious, with states such as South Dakota warning people in some counties to stay off the roads completely.
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Travel misery and hundreds of car crashes as a spring storm hits parts of the US
A major spring storm unloaded heavy snow and blizzard conditions from the Dakotas to Minnesota, and is expected to make travel a nightmare for the 1.6 million people in its path as it makes its way toward Canada.

