High Wind Warning issued December 18 at 9:56PM MST until December 19 at 8:00AM MST by NWS Rapid City SD

* WHAT…Northwest winds 20 to 30 mph with gusts up to 60 mph
expected.

* WHERE…In South Dakota, Central Black Hills and Northern Black
Hills. In Wyoming, Wyoming Black Hills.

* WHEN…Until 8 AM MST Thursday.

* IMPACTS…The high winds may blow down large trees and damage
roofs, small outbuildings, and signs. Power outages are possible.
Travel could be difficult, especially for high profile vehicles.
Strong winds can cause blowing dust, reduced visibility, and
flying debris.