Credit Tony Gonzalez / WPLN News As the region wakes up to a wintry mix of snow and ice, forecasters warn that the worst of the storm is yet to come, bringing 1 to 3 inches of snow in Nashville and up to 5 inches around Clarksville. The storm has caused institutional closures, stopped some public transit service, and pushed road crews into around-the-clock duties. Travel is treacherous across the region, with black ice likely even on the interstates. “If you can stay at home, please stay at home,” says Tennessee Department of Transportation Commissioner Clay Bright. Crews have had to focus on the highest priority roads, like interstates. For the most part, smaller state routes have been pre-treated but have not been cleared.