Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

A prolonged atmospheric river will continue to bring gusty winds, heavy rainfall which may lead to urban and river flooding with possible landslides, and heavy inter-mountain snow over the Pacific Northwest into the northern Rockies through Thursday. A clipper will cross the Great Lakes and Northeast U.S. into Thursday with areas of moderate to heavy snow and mixed wintry precipitation. Read More >

Freezing Rain and Snow Tonight into Thursday

Precipitation Timing

Ice Accumulations Thursday Morning

Snowfall Accumulations Thursday

Another band of precipitation will move into the area tonight, continuing into Thursday. Central SD will see mainly freezing rain while northeast SD and west central MN will see mainly snow. An Ice Storm Warning has been issued for Corson county starting at 9 PM CST. The Winter Weather Advisory has been expanded and pushed back to start at 9 PM CST.

Snow will start over central SD late this evening and become wintry mix or freezing rain early Thursday morning. Snow spreads east through the early morning hours and should change over to mainly freezing rain by Noon CST Thursday before changing back to snow Thursday evening and coming to an end.

Ice accumulations up to a tenth to a quarter inch of ice is possible, with highest accumulations expected over north central South Dakota. Plan for slippery conditions that could impact the morning commute and driving through the day.

Expected snowfall totals are favoring up to an inch over northeastern SD and west central MN Thursday, with lower amounts to the west of the James Valley due to a faster transition to wintry mix or freezing rain. However, if the heaviest band of precipitation sets up further to the north in colder air, then more snowfall could accumulate, with amounts up to 3 to 4 inches.

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Tracking Atmospheric River in the Northwest U.S. and Clipper with Winter Weather in the Northeast U.S.

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