There isn't much more to say other than the cold we've been talking about for a week is here.
Today's highs will be in the teens below zero in NE South Dakota, and in the single digits below zero for the rest of the region. There will be sun much of the day, but be wary of travel in open areas because strong winds could produce blowing snow.
Speaking of wind, we expect it in the 15-30 mph range in eastern South Dakota today, tonight, and tomorrow. A wind chill warning is posted through early Tuesday morning.
Tonight's lows in eastern South Dakota will be in the 20s below zero, while the western part of the state will only be in the teens below.
With winds continuing to blow, and arctic air remaining in place, we expect widespread school cancellations tomorrow. Monday's highs will be in the teens below zero. Wind chills will be in the minus 40s. Occasionally the wind chill will be in the minus 50s. Only western South Dakota will be above zero Monday.
After that, the winds will subside and the temperatures will gradually warm. In fact, we're forecasting 30s across KELOLAND next weekend.