M3.5 earthquake 20 km SSE of Volcano, Hawaii

A magnitude 3.5 earthquake struck 20 km SSE of Volcano, Hawaii on Mon, Oct 7, 1963, 10:20 PM GMT-10 (08:20 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.9 42 km SSE of Fern Forest, 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: 158 in the 60 days after this one and 41 in the 30 days before it.

The first 60 of 158.

From the USGS Earthquake Hazards Program and its partner networks, event hv19630934. Read Tue, Sep 22, 2026, 8:11 AM UTC.