The death toll of the historic floods affecting Australia’s east coast rose to at least 13 on Wednesday. Australian authorities said at least nine people died in Queensland and a fourth person was confirmed dead in New South Wales. Severe thunderstorms were still forecast in both Queensland and NSW going ahead, with Greater Sydney also bracing for potential “life-threatening” flash flooding. “Early tomorrow morning and throughout the day, we could see severe thunderstorms bringing heavy rain, damaging winds and possibly even large hail,” the Bureau of Meteorology’s Dean Narramore said on Wedne…