LONDON—Northern Europe has been battered by its third major storm in five days, with heavy rains and high winds killing at least two more people, disrupting travel and prompting hundreds of flood alerts across a region still recovering from last week’s hurricane-force winds. Storm Franklin pushed in from the North Atlantic on Sunday afternoon even as crews worked to clear fallen trees and restore power to thousands of customers hit by storms Dudley and Eunice last week. Heavy rains and high winds swept across Northern Ireland and northern England on Monday before moving on to France. England’s environment agency issued more than 300 flood warnings and alerts and train operators urged people not to travel. In France, a couple in their 70s died Sunday after their car was swept into the English Channel near a small town in Normandy. The couple had called for help but it did not reach …