PIERRE, S.D. -- Ahead of what has been billed as a “potentially historic” April snowstorm from the National Weather Service, a number of weather closures and cancellations were made Friday.

On the roads, Interstate 90 from Murdo to Mitchell was closed at 2:30 p.m., joining the stretch from Rapid City to Murdo earlier in the day. Interstate 29 was also closed from the North Dakota border to Brookings on Friday afternoon. The South Dakota Department of Transportation said more interstate closures and no travel advisories were expected as the storm system continued to move through. Officials have urged motorists to not travel or plan to travel across the state Friday and into the weekend.

The NWS office in Sioux Falls issued a forecast update Friday afternoon, estimating 12-18 inches of snow for central South Dakota. A 60 mph wind gust was recorded in Mitchell at about 4 p.m. The bulk of the snow was expected Friday evening into Saturday morning.

That made for a busy day for the South Dakota Highway Patrol, which responded to 105 calls statewide, as of 5 p.m. Friday. The majority of the calls were for motorist assistance or vehicle slide offs.

Gov. Dennis Daugaard had closed state offices in most of the state as of Thursday night in anticipation of the storm.