Winter Weather — Eastern Chester, Pennsylvania

2021-02-13 · Eastern Chester, Pennsylvania

Event narrative

Light freezing rain fell. A trained spotter near Exton reported 0.03 inches of ice accretion.

Wider weather episode

Weak low pressure tracked offshore of the mid-Atlantic on February 13, spreading some light precipitation into the region. A surge of warm air aloft prevented the light precipitation from falling as snow. However, strong high pressure to the north promoted a cold air damming environment with sub-freezing air trapped at the surface. This led to most of the precipitation falling as freezing rain, with some generally light ice accretion across the area.

Source: NOAA Storm Events Database, event_id 932948. Narrative written by the NWS forecast office that issued the report.