 Severe thunderstorms are barreling across parts of west central and southwestern Minnesota this morning. One particularly intense cell prompted a tornado warning last hour for areas south of Wilmer. No immediate reports of tornado touchdowns, but trees and power lines are reported down in Prinsburg and Raymond. The National Weather Service says that storm is now heading toward Olivia, Bird Island, and Hector, with the potential of 70 mph winds and tennis ball-sized hail.