Snow to spread from Rockies to Plains into Monday

By Renee Duff, AccuWeather meteorologist
March 18, 2018, 10:19:42 PM EDT


Disruptive snow will spread from the Rockies to a portion of the Plains as a new storm strengthens and tracks eastward into Monday.

The latest round of wintry weather follows a storm that struck portions of South Dakota’s Interstate-90 corridor with up to a foot of snow on Friday.

Rapid City was buried with around 10 inches of snow, marking the highest single-day snowfall total so far this year.

The latest snowstorm will return snow to the northern Plains, as well as whiten areas farther south that were missed by Friday’s storm, including downtown Denver.

Rockies snow 3.18 AM


“Snowstorms tend to make a more common appearance to the Denver area during late winter and early spring,” AccuWeather Meteorologist Brett Rathbun said.

“Denver averages about 11 inches of snow in the month of March, the most of any other month,” he added.

While this will not be a significant snowstorm for Denver, a couple inches can whiten the city.

"The majority of the snow will be on grassy and elevated surfaces," AccuWeather Senior Meteorologist Kristina Pydynowski said. "Warmth stored up in roads and sidewalks due to highs in the 50s and 60s this past week will cause most of the snow to melt on these surfaces."

“However, as temperatures plummet overnight, any wet, untreated roads can turn icy for the Monday morning commute in Denver,” Rathbun said.

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Bridges and overpasses would be the first to become slick.

Precipitation may first begin as rain before colder air rushes in and causes a changeover to snow.

Winds will ramp up across the region as the storm strengthens, with gusts around 30 mph possible around Denver on Sunday night.

The snow and wind will cause poor visibility on portions of interstates 25 and 70.

NC Monday March 18


As the storm sweeps eastward into Monday morning, snow, some of which could come down heavily, will invade northwestern Kansas around I-70.

“Some snow will also extend as far north as the Dakotas, where a few inches can fall from Rapid City to Bismarck, North Dakota, into Monday,” Rathbun said.

While the band of snow is forecast to fizzle as it progresses into the eastern Dakotas, Minnesota and Iowa Monday night into Tuesday, slick conditions could still ensue from Fargo, North Dakota, to Aberdeen and Sioux Falls, South Dakota; Sioux City, Iowa; and Omaha, Nebraska.

“Any snow that has accumulated will become a thing of the past by the middle of the week as much warmer air returns,” Rathbun said.

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