Lake-Effect Snow — Northern Cayuga, New York

2021-01-22 to 2021-01-23 · Northern Cayuga, New York

Wider weather episode

Weakening low pressure system passed to our north across Ontario and Quebec. This provided large scale moisture that when combined with pre-frontal temps aloft just cold enough to support lake effect resulted in snow east of Lake Ontario. Upslope initially aided the combined synoptic moisture and lake-induced instability to generate heavy snow in the Tug Hill region, however as the event continued, flow eventually turned more northwesterly in the wake of the system. This resulted in heavy snow slinking southward in the Monroe County to Cayuga County shoreline areas. Selected snow totals included 17 inches in Constableville, 11 inches in Mannsville, 11 inches in Lacona, 10 inches in Gates, 9 inches in Webster, 9 inches in Cato, and 10 inches in Marion.

Source: NOAA Storm Events Database, event_id 939136. Narrative written by the NWS forecast office that issued the report.