M2.1 earthquake 8 km SW of Volcano, Hawaii

A magnitude 2.1 earthquake struck 8 km SW of Volcano, Hawaii on Sat, Sep 30, 1978, 4:20 AM HST (14:20 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M2.6 Island of Hawaii, Hawaii. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: 198 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 198.

From the USGS Earthquake Hazards Program and its partner networks, event hv19781677. Read Tue, Sep 22, 2026, 3:36 PM UTC.