Officials have closed Interstate 90 from Murdo to Mitchell.
I-90 is now closed from Rapid City to Mitchell, both east and west bound.
Heavy snow and strong winds are creating icy, snow-packed roadways, heavy drifting and limited visibility making safe travel impossible in many areas of the state. Motorists are strongly cautioned that other state highways and local roads will likely become impassible as this storm continues throughout the day.
Officials are also asking drivers to stay put and not plan any travel across the state for the rest of today and into the weekend. As this storm system moves through, more interstate closures and No Travel Advisories can be expected.
Closures and advisories are posted on www.safetravelusa.com/sd and 5-1-1.
A blizzard warning is in effect for much of the South Dakota into Saturday