Winter Weather — Coastal York, Maine

2020-05-09 · Coastal York, Maine

Event narrative

Rain changed to snow across coastal York County in the morning hours of May 9th with a light coating falling in some towns by midday. Berwick and Biddeford recorded a trace.

Wider weather episode

A cool and dry air mass was in place across northern New England on May 8th into the 9th. At the same time low pressure began to develop just south of New England spreading rain across Maine on the night of the 8th into the 9th. Through evaporational cooling and strong lift, the rain changed to snow across higher elevations with the snow levels falling throughout the night until snow began to fall even at the coast on the morning of the 9th. Many locations picked up several inches of snow by midday. Accumulating snowfall in early to mid May is exceptionally rare, especially on the coastal plain.

Source: NOAA Storm Events Database, event_id 897604. Narrative written by the NWS forecast office that issued the report.