M2.1 earthquake 6 km NNW of Volcano, Hawaii

A magnitude 2.1 earthquake struck 6 km NNW of Volcano, Hawaii on Wed, Feb 22, 1978, 8:56 PM HST (06:56 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M2.1 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: 197 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 197.

From the USGS Earthquake Hazards Program and its partner networks, event hv19780299. Read Tue, Sep 22, 2026, 9:30 PM UTC.