A lake-effect snow storm dumped feet of snow across Oswego County, New York last week. Department of Transportation crews in Central New York were busy clearing walls of snow like this to make way for cars -- and more snow.

On Feb. 19, the city of Oswego had 20 inches of snow on the ground, the highest snow depth so far in February, according to the NWS. Oswego County officials said at least 26 structures had collapsed under the weight of the snow.

Oswego County, N.Y. — Oswego County declared a state of emergency Tuesday afternoon due to whiteout conditions for the third day in a row from a lake effect storm.

New York has seen a series of building collapses following heavy snow across parts of the central part of the state last week. The damage, concentrated in Oswego and Oneida counties, has affected businesses, fire stations and private properties, prompting emergency responses and safety warnings from officials.