The Polish authorities called on the public to take precautions against predicted floods on Friday and prepare for possible power cuts and potable water shortages as heavy rainfall continues. People in ground-floor homes located close to rivers should prepare for flooding, Deputy Interior Minister Wiesław Leśniakiewicz told Rmf.fm radio station. People should clear their garages and park their cars in a safe place, he said. “There may also be situations where there is temporarily no drinking water or no electricity.” Poland’s Meteorological Institute issued a flood warning for the Lower Silesi…