Streets were submerged in the Greek port city of Thessaloniki on Thursday, May 10, following heavy rainfall.Stormy weather with severe rain and hail was forecast to last until May 11 for some parts of the country.Greece’s Civil Protection Agency asked residents to secure objects that might become dislodged, and to try to keep drains clear.This video gives a bird’s-eye view of fast-flowing water on streets in Thessaloniki. Credit: Marianna Karakoulaki via Storyful