Thousands without power as storm, possible tornadoes rip through eastern Ontario

 Thousands of people were left without power Sunday night after a tornado-likely destructive storm  tore through eastern Ontario, toppling trees and damaging homes.   Environment Canada issued multiple tornado warnings Sunday night as the powerful storm moved through the area.   Warnings were issued for the area around Frontenac Provincial Park north of Kingston, Ont., and then - as the storm headed east - for communities such as Gananoque and Brockville.   The weather agency said the storm was capable of generating winds of 100 kilometers per hour, calling it a "dangerous and  life-threatening situation".   Heavy hail and heavy rain are also possible, Environment Canada added. The agency said at least one storm detector saw a tornado.   Environment Canada on alert for severe thunderstorms as heavy rain and winds blow Toronto   The agency recommends that people  shelter indoors in a room on the ground floor, away from exterior walls or windows, as tornadoes cannot be seen at