South Dakota state offices closed amid blizzard

Snow drift in Pierre. (Courtesy of Leslie Isburg)
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PIERRE, S.D. (AP) All state offices are now closed in South Dakota as blizzard conditions barrel into the Midwest.

Gov. Kristi Noem says only essential personnel should go to work at state offices Thursday, as the National Weather Service warns of blizzard and winter-storm conditions across several states.

North Dakota transportation officials closed sections of major interstates after blowing snow reduced visibility to nearly zero.

Blizzard conditions also hit western Nebraska, while heavy rain has caused flooding elsewhere in Nebraska and South Dakota, and in Iowa.

The weather is moving into the Midwest after causing widespread power outages in Colorado, where a blizzard forced the cancellation of hundreds of flights and wreaked havoc on roadways.

A Colorado State Patrol officer was hit and killed by a car as he helped a driver who'd slid off an interstate near Denver.