* WHAT. Northwest winds 25 to 40 mph with gusts to around 55 mph expected. Strongest winds across northwest South Dakota. * WHERE. Ziebach County, including portions of the Cheyenne River Reservation, Jackson County, including portions of the Pine Ridge Reservation, Northern Perkins, Butte, Northern Meade Co Plains, Pennington Co Plains, Haakon, Sturgis/Piedmont Foothills, Southern Meade Co Plains, and Southern Perkins. * WHEN. From 6 AM this morning to 6 PM MDT this evening. * 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 20 to 35 mph with gusts to around 45 mph expected. * WHERE. Northern Foothills. * WHEN. From 6 AM this morning to 6 PM MDT this evening. * 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.