Storms encase Iowa and eastern Nebraska in ice and generate first tornado warning in San Francisco

A major ice storm in Iowa and Nebraska caused treacherous driving conditions, leading to closures of Interstate 80 due to cars sliding off the road. One fatality occurred in Nebraska from a crash on icy roads, while a tornado warning was issued in San Francisco, resulting in damage and injuries. Snowfall and avalanches affected upstate New York and Sierra Nevada, with power outages in western Washington.

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