Pennsylvania is the fifth-most populous state in the U.S., after California ... but some are increasing. This map, based on U ...

Lake effect snow is a phenomenon that causes heavy snow in the Great Lakes region intermittently throughout the late fall and winter. According to NWS, clouds capable of producing up to three inches ...

Pennsylvania is the fifth-most populous state in the U.S., after California ... but some are increasing. This map, based on U.S. Census data, shows where this growth has been the fastest.