Recent heavy rainfall has led to significant flash flooding threats across southern New York and Pennsylvania, prompting multiple flood watches and warnings. Counties such as Allegany, Steuben, Chemung, and Schuyler in New York, as well as Carbon and Monroe in Pennsylvania, are under advisories for substantial downpours and potential mudslides. Residents are urged to prepare for isolated flooding, particularly with slow-moving storms expected this weekend. The National Weather Service has issued updates indicating that flooding rains could reach 2-3 inches in short periods, and warnings remain effective in various counties including those in upstate New York and parts of the Finger Lakes region. Authorities are maintaining close monitoring as heavy rain continues to pose risks throughout the region.