* WHAT...Northwest winds 30 to 40 mph with gusts up to 55 mph expected.
* WHERE...Portions of northwestern, south central, and southwestern South Dakota.
* WHEN...From 9 AM MDT /10 AM CDT/ to 8 PM MDT /9 PM CDT/ Wednesday.
* 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.