Snowmelt will continue through Friday with increasingly warm temperatures and humidity. Thunderstorms are possible Friday night which could bring over a half in of rainfall, adding to the flood risk. * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of central Upper Michigan, including the following county, Menominee. * WHEN...Through Saturday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lyin