BOSTON, Mass (Reuters) - A dangerous cold snap seized the northeastern United States on Saturday, with temperatures in some areas set to fall below zero and Boston facing its coldest Valentine's Day in almost four decades.
Officials warned people to stay indoors away from what the National Weather Service described as "life threatening" cold. Wind chill advisories were in effect over parts of nine states extending from northern Pennsylvania to western Maine, with forecasters expecting gusts up to 45 miles per hour (72 kph).