The Chardon cluster is named for the city of Chardon, Ohio. The cluster
covers the northeastern corner of Ohio along the southern bank of Lake
Erie, and includes some events in western Pennsylvania. The largest
event is a 5.3 mb event on January 31, 1986; no other event is larger
than 3.9 mb. Most events are recorded only to regional distances. All
events have depth control from near-source or local-distance readings.
