Thursday night into Friday some thunderstorms are even possible! "Really think about whether you need to travel", the South Dakota public safety tweeted Wednesday.
The storm is shaping up to be the second rare bomb cyclone to hit the state in as many months.
In addition to snow, residents could see risky flooding, including in towns in Nebraska, Iowa, Minnesota and along the Missouri River, where people are still coping with the effects of last month's floods.
For northern counties, snow will last until much later in the day Thursday when the warmer air finally makes its way on in. Again, it's not about the AMOUNT of snow with blizzard warnings, but the wind combining with snow to produce those reduced visibilities.
In Denver and across northeastern Colorado, rain will develop in the morning and change to snow around mid-day. Roughly 1-3 inches are expected to accumulate, Barlow said. This may be a combination of rain and snow as it moves northward. Snow may be heavy at times, with the worst of the storm coming Thursday afternoon, the Weather Service reported.
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By Friday, the system should be weakening, with lingering snow in upper Mississippi Valley and northern Great Lakes.
Heavy snow caused so many accidents traffic was at a standstill on I-35 from Medford to Faribault Wednesday. The heaviest-hit areas are expected to be from southeastern Wyoming through Nebraska and South Dakota into southern Minnesota. And that's just what mid-April is bringing to millions of people in the West and Midwest, with more than 40 million Americans under wind-related advisories and millions more expecting heavy snow. Duluth will only see an inch of snow or less overnight, according to the Weather Service. The storm has already taking shape and flooding risks will rise as the snow from the storm melts later in the week.
A powerful April blizzard threatened the north-central part of the United States on Wednesday, as it pushed east across the Rockies and into the Plains states, raising the threat of more flooding in areas still recovering from a deluge last month. Road closures are possible, potentially including along stretches of Interstates 29, 80 and 90.
While this latest storm may not intensify fast enough to that category, Colorado State Climatologist Russ Schumacher told the Associated Press it "will be near record intensity for April for this area". There's a storm on the way that's going to remind Midwesterners that winter's never over till it's over.