Updated 6:30 p.m. More snow and continued wind combined late Tuesday afternoon to make travel dangerous in western South Dakota, where Interstate 90 was closed.
With 8 inches to 15 inches of snow on the ground in areas across the region, state highway officials advised against travel and encouraged those who must go out to reduced speeds and drive with caution.
Interstate 90 was closed from Rapid City to Sioux Falls by 6 p.m. Tuesday. After a lull in snowfall earlier in the day in Rapid City, the snow resumed and the forecast called for an additional six inches to a foot by Wednesday morning.
Drivers can check road conditions here.
Original story: The Rapid City Police Department is urging residents not to travel in the city unless it's absolutely necessary.
Over six inches of snow have fallen overnight in downtown Rapid City according to the National Weather Service.
NWS has issued a hazardous weather outlook and winter storm warning for Bennett, Butte, Custer, Fall River, Haakon, Harding, northern Meade, Pennington, Perkins, Shannon, Todd, Tripp and Ziebach counties.
Drivers without four-wheel drive will have difficulty getting around, as plows have not been able to access most city roads at this time, according to Rapid City police.
Visibility is currently about a quarter mile, and streets are icy with heavy drifting and high winds.
Please use good judgment and avoid all unnecessary travel.
The winter storm will continue to bring widespread snow to the area today and tonight. Periods of sleet are possible as well, according to National Weather Service.
Rapid City: 7 inches at 11 a.m.
Spearfish: 12 inches at 9 a.m.
Pactola Lake: 5 inches at 7 a.m.
Martin: 10 inches at 7 a.m.
Hot Springs: 9 inches at 8 a.m.
Sturgis: 7 inches at 7 a.m.
Pine Ridge: 8 inches at 8 a.m.
Kyle: 4 inches at 7 a.m.
Gillette: 8 inches at 7 a.m.