* WHAT...Northwest winds 20 to 30 mph with gusts up to 45 mph. * WHERE...In Minnesota, Big Stone and Traverse Counties. In South Dakota, Brown, Clark, Codington, Day, Grant, Marshall, Roberts, and Spink Counties. * WHEN...Until 9 PM CDT this evening. * IMPACTS...Gusty winds will blow around unsecured objects and a few power outages may result.