On July 14, 2021, a car stands in a flooded street in Hagen, western Germany, after heavy rains hit parts of the country, causing widespread flooding.INA FASSBENDER | AFP | Getty ImagesFour people are dead and more than thirty are missing after flooding in western Germany that caused half a dozen houses to collapse, police said on Thursday. “We currently have an unclear number of people on roofs who need to be rescued,” a Koblenz police spokesperson told Reuters. “There are many places where fire brigades and rescue workers have been deployed; we do not yet have a very precise picture because rescue measures are continuing,” the spokesperson added.On Wednesday, two firefighters drowned, and the army was deployed to help stranded residents. Heavy rainstorms might be expected in southwestern Germany on Thursday, with persistent rainfall until Friday evening, the German Weather Service warned in a morning bulletin.— CNBC contributed to this report./nRead More