New York, New Jersey and Connecticut are under winter storm warnings Sunday as the entire region deals with a significant snowstorm. Tri-State Area officials had been issuing warnings and discussing the states' preparations in the days leading up to the storm.

Heavy snow is expected to blanket large portions of the Eastern U.S. while much of the country will endure dangerously cold temperatures in the coming days.

See which towns have the highest snowfall totals as of Sunday night, and where lightning and thundersnow occurred.