* WHAT. Northwest winds 25 to 35 mph with gusts up to 55 mph expected. * WHERE. Portions of northwestern and western South Dakota. * WHEN. From 3 AM to 6 PM MDT Saturday. * IMPACTS. Sudden wind gusts can cause drivers to lose control, especially in lightweight or high profile vehicles. Strong winds can cause blowing dust, reduced visibility, and flying debris.

* WHAT. Northwest winds 25 to 35 mph with gusts up to 55 mph expected. * WHERE. Ziebach County, including portions of the Cheyenne River Reservation, Rapid City, Haakon, and Sturgis/Piedmont Foothills. * WHEN. Until 6 PM MDT this evening. The strongest winds will likely occur early this morning. * IMPACTS. Sudden wind gusts can cause drivers to lose control, especially in lightweight or high profile vehicles. Strong winds can cause blowing dust, reduced visibility, and flying debris.

* WHAT. Northwest winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE. Butte, Harding, Northern Meade Co Plains, Northern Perkins, Southern Meade Co Plains, Southern Perkins, and Pennington Co Plains. * WHEN. Until 6 PM MDT this evening. The strongest winds will likely occur early this morning. * IMPACTS. The high winds may 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.

* WHAT. Southwest winds 20 to 30 mph with gusts up to 50 mph becoming northwest early this morning. * WHERE. Northern Foothills. * WHEN. Until 6 PM MDT this evening. The strongest winds will likely occur early this morning. * IMPACTS. Sudden wind gusts can cause drivers to lose control, especially in lightweight or high profile vehicles. Strong winds can cause blowing dust, reduced visibility, and flying debris.