Here are some filtered snowfall maps that I created using reports from various sources. Many of the reports came from this forum and the National Weather Service. Only social media reports that passed through quality control were considered.

Flurries and light snow moved into Connecticut around daybreak on February 18th as low pressure formed east of New Jersey. The snow moved east and began to develop into a steadier area of snow across New Haven and Middlesex Counties. As a compact, but potent low pressure system developed over Long Island, a band of heavy snow formed near and just east of I-91 from the New Haven area up to the Massachusetts border. Snowfall rates of 1 to 2 inches per hour were observed in many locations.

The snow changed to a bit of rain across extreme southeastern Connecticut before ending. Some mixed snow and ice pellets were also noted near the shoreline from New Haven and points east during the afternoon.

Snow ended in northeastern Connecticut by late afternoon. A general 3 to 6 inch snowfall was observed for the eastern half of the state. Less snow fell in western Connecticut and across southeastern sections. There was a narrow band of 6"+, extending from near Meriden, northeastward up to Somers.

Here in New Haven, the total snowfall was 4.1" Toward the end of the storm, 1.2" of snow fell in just one hour from noon to 1 p.m. The precipitation ended as snow pellets shortly after 1 p.m.

Here is a black and white version of the map: