Winter storm warnings were in effect throughout the area, including New York City, Long Island, New Jersey, Connecticut and Westchester, Putnam, Orange and Rockland counties. New York Governor Andrew Cuomo declared a state of emergency for the mid-Hudson, New York City and Long Island regions, as did Governor Chris Christie in New Jersey and Govenor Dan Malloy in Connecticut.
Snow that began just after midnight Thursday fell at the rate of 2 and 3 inches per hour at times before transitioning to rain, sleet and freezing rain across the Tri-State area, then there were thunderstorms before a brief transition back to snow.
The wintry mix left heavy slush, making for dangerous conditions on the roads and sidewalks.
The highest snowfall totals were in Orange County, New York, where 20.5 inches fell in Harriman. New Windors recorded 19.4 inches, while Tuxedo Park saw 17, Middletown 16.4 and Port Jervis 14.5
New Jersey also saw impressive totals, with 16.7 inches in Roselle, 16.3 in West Milford, 15.5 in Oakland and West Orange and 15 in Kearny and Cedar Grove. Ridgewood, Roseland, Harrison and Roselle Park all saw more than 14 inches.
In New York City, 12.5 inches were reported in Central Park and 11.8 in Bayside, Queens. On Long Island, Bayville recorded 14.6 inches while East Setauket, North Babylon and Deer Park all saw more than 12 inches.

In Rockland County, 17.2 inches fell in Stoney Point and 14.6 in Airmont, while Westchester reported 15.8 inches in Peekskill and 14.5 in Mount Kisco. Connecticut saw 15.6 inches in Danbury and 15.3 in New Canaan.