The Latest on a winter storm hitting the West and Midwest (all times local):

8:10 a.m.

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.

Francis Rotenberger, of Rapid City, S.D., walks home through Memorial Park in the snow in downtown Rapid City Wednesday, March 13, 2019. (Ryan Hermens/Rapid City Journal via AP)
Francis Rotenberger, of Rapid City, S.D., walks home through Memorial Park in the snow in downtown Rapid City Wednesday, March 13, 2019. (Ryan Hermens/Rapid City Journal via AP)
A string of wrecked vehicles sit on an overpass over Interstate 70 as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Aurora, Colo. (AP Photo/David Zalubowski)
A string of wrecked vehicles sit on an overpass over Interstate 70 as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Aurora, Colo. (AP Photo/David Zalubowski)

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6:50 a.m.

South Dakota’s governor has closed state offices across much of the state as blizzard conditions move in from the West.

Offices in 49 of South Dakota’s 66 counties are closed Thursday as the National Weather Service warns of blizzard and winter-storm conditions a day after a massive late-winter storm hit Colorado.

Gov. Kristi Noem says only essential personnel in the affected state offices should go to work.

Heavy rain has caused flooding in southern and eastern South Dakota, with water covering some roads and highways. Rain and melting snow have caused similar conditions in Iowa.

Traffic stops in the eastbound lanes of Interstate 70 near Tower Road as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Auora, Colo. (AP Photo/David Zalubowski)
Traffic stops in the eastbound lanes of Interstate 70 near Tower Road as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Auora, Colo. (AP Photo/David Zalubowski)
This undated photo provided by the Colorado State Patrol shows Cpl. Daniel Groves. The state patrol officer was hit and killed by a car as he was helping another driver who had slid off of Interstate 76 northeast of Denver. (Colorado State Patrol via AP)
This undated photo provided by the Colorado State Patrol shows Cpl. Daniel Groves. The state patrol officer was hit and killed by a car as he was helping another driver who had slid off of Interstate 76 northeast of Denver. (Colorado State Patrol via AP)

The weather is barreling into the Midwest after causing widespread power outages Wednesday in Colorado, where a blizzard forced the cancellation of hundreds of flights and wreaked havoc on roadways as drivers became overwhelmed by blinding snow.

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12 a.m.

Canada geese battle choppy water as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Denver. (AP Photo/David Zalubowski)
Canada geese battle choppy water as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Denver. (AP Photo/David Zalubowski)

National Guard troops were using specialized vehicles with tank-like treads to rescue stranded drivers in Colorado in the wake of a massive late-winter storm that’s expected to unleash heavy rain and snow on the Midwest plains Thursday.

Wednesday’s blizzard cut power to tens of thousands of homes and businesses, caused hundreds of flights to be canceled and wreaked havoc on roadways. A wind gust clocked in at 97 mph (156 kph) in Colorado Springs.

The storm also contributed to the death of Corporal Daniel Groves, a Colorado State Patrol officer who was hit and killed by a car as he was helping another driver who slid off Interstate 76 near Denver.

Bobby Larson drops into the bowl on a snowboard in Edora Park on Wednesday, March 13, 2019, in Fort Collins, Colo. (Timothy Hurst/The Coloradoan via AP)
Bobby Larson drops into the bowl on a snowboard in Edora Park on Wednesday, March 13, 2019, in Fort Collins, Colo. (Timothy Hurst/The Coloradoan via AP)

Blizzards, floods and a tornado were reported across more than 25 states, stretching from the northern Rockies to Texas and beyond.

A cross country skier travels in the snow on Wednesday, March 13, 2019, in Fort Collins, Colo. A winter storm hit the western U. (Timothy Hurst/The Coloradoan via AP)
A cross country skier travels in the snow on Wednesday, March 13, 2019, in Fort Collins, Colo. A winter storm hit the western U. (Timothy Hurst/The Coloradoan via AP)
People walk a dog in the snow on Wednesday, March 13, 2019, in Fort Collins, Colo. Low air pressure is how meteorologists measure the strength of a storm, and this is the strongest in Colorado since at least 1950. (Timothy Hurst/The Coloradoan via AP)
People walk a dog in the snow on Wednesday, March 13, 2019, in Fort Collins, Colo. Low air pressure is how meteorologists measure the strength of a storm, and this is the strongest in Colorado since at least 1950. (Timothy Hurst/The Coloradoan via AP)
Vehicles stack up on the eastbound lanes of Interstate 70 near Tower Road as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Aurora, Colo. (AP Photo/David Zalubowski)
Vehicles stack up on the eastbound lanes of Interstate 70 near Tower Road as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Aurora, Colo. (AP Photo/David Zalubowski)
A lone pedestrian struggles along Broadway as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Denver. (AP Photo/David Zalubowski)
A lone pedestrian struggles along Broadway as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Denver. (AP Photo/David Zalubowski)
White-out conditions along Happy Jack Road during a blizzard on Wednesday, March 13, 2019, in Cheyenne. (Jacob Byk/The Wyoming Tribune Eagle via AP)
White-out conditions along Happy Jack Road during a blizzard on Wednesday, March 13, 2019, in Cheyenne. (Jacob Byk/The Wyoming Tribune Eagle via AP)
A traveller drags a suitcase as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Denver. (AP Photo/David Zalubowski)
A traveller drags a suitcase as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Denver. (AP Photo/David Zalubowski)
Traffic comes to a halt on eastbound Interstate 70 near Tower Road as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Aurora, Colo. (AP Photo/David Zalubowski)
Traffic comes to a halt on eastbound Interstate 70 near Tower Road as a late winter storm packing hurricane-force winds and snow sweeps over the intermountain West Wednesday, March 13, 2019, in Aurora, Colo. (AP Photo/David Zalubowski)
High water floods a street Wednesday, March 13, 2019, in Hooper, Neb. A window-rattling late winter storm brought blizzards, floods and a tornado across more than 25 states Wednesday, stretching from the northern Rocky Mountains to Texas and beyond. (Ryan Soderlin/Omaha World-Herald via AP)
High water floods a street Wednesday, March 13, 2019, in Hooper, Neb. A window-rattling late winter storm brought blizzards, floods and a tornado across more than 25 states Wednesday, stretching from the northern Rocky Mountains to Texas and beyond. (Ryan Soderlin/Omaha World-Herald via AP)
A corn field is flooded with water Wednesday, March 13, 2019, in Ashland, Neb. A window-rattling late winter storm brought blizzards, floods and a tornado across more than 25 states Wednesday, stretching from the northern Rocky Mountains to Texas and beyond. (Ryan Soderlin/Omaha World-Herald via AP)
A corn field is flooded with water Wednesday, March 13, 2019, in Ashland, Neb. A window-rattling late winter storm brought blizzards, floods and a tornado across more than 25 states Wednesday, stretching from the northern Rocky Mountains to Texas and beyond. (Ryan Soderlin/Omaha World-Herald via AP)
The junction of Highway 275 and Highway 91 is flooded on Wednesday, March 13, 2019, in Scribner, Neb. (Ryan Soderlin/Omaha World-Herald via AP)
The junction of Highway 275 and Highway 91 is flooded on Wednesday, March 13, 2019, in Scribner, Neb. (Ryan Soderlin/Omaha World-Herald via AP)
Cody Stump walks through a flooded street Wednesday, March 13, 2019, in Hooper, Neb. A window-rattling late winter storm brought blizzards, floods and a tornado across more than 25 states Wednesday, stretching from the northern Rocky Mountains to Texas and beyond. (Ryan Soderlin/Omaha World-Herald via AP)
Cody Stump walks through a flooded street Wednesday, March 13, 2019, in Hooper, Neb. A window-rattling late winter storm brought blizzards, floods and a tornado across more than 25 states Wednesday, stretching from the northern Rocky Mountains to Texas and beyond. (Ryan Soderlin/Omaha World-Herald via AP)

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