M4.3 earthquake 13 km SSW of Volcano, Hawaii

A magnitude 4.3 earthquake struck 13 km SSW of Volcano, Hawaii on Tue, Oct 9, 1973, 2:01 AM HST (12:01 UTC), 32 km (20 mi) below the surface.

A larger quake followed: M4.3 3 km WNW of P?hala, 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: at least 199 in the 60 days after this one and 108 in the 30 days before it.

The first 60 of at least 199.

From the USGS Earthquake Hazards Program and its partner networks, event hv19732413 (also filed as usp00003s2). Read Mon, Sep 28, 2026, 4:58 PM UTC.