M2.5 earthquake 13 km S of Fern Forest, Hawaii

A magnitude 2.5 earthquake struck 13 km S of Fern Forest, Hawaii on Mon, Dec 4, 1978, 12:56 PM HST (22:56 UTC), 4 km (3 mi) below the surface.

A larger quake followed: M3.0 10 km S of Volcano, 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: 200 in the 60 days after this one and 0 in the 30 days before it.

The first 60 of 200.

From the USGS Earthquake Hazards Program and its partner networks, event hv19782133. Read Tue, Sep 22, 2026, 10:57 AM UTC.