The Willits cluster is named for the town of Willits in northern
California. The cluster is composed of small events, mostly recorded
only to regional distances. The largest event has magnitude 4.4 Mw on
June 22, 2024. Densification of the seismic network in this region
results in extremely good coverage since ~2012, and the events since
that time were relocated with free depth, and then held fixed as older
events were added, with depths constrained by near-source and local-
distance readings.
