M4.0 earthquake 11 km S of Volcano, Hawaii

A magnitude 4.0 earthquake struck 11 km S of Volcano, Hawaii on Sat, Nov 15, 1986, 10:58 AM HST (20:58 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M4.3 10 km SSW of Volcano, Hawaii. This one was a foreshock.

Map

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

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
3.99	ML, local (Richter)	Hawaiian Volcano Observatory	Preferred · Final · ±0.08 · 4 stations
3.9	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed

The USGS’s account of the effects of this earthquake.

Felt (III) at Hamakua and Volcano.

From the USGS event page for hv226692. U.S. Geological Survey text and figures are in the public domain.

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 128 in the 30 days before it.

The first 60 of 198.

From the USGS Earthquake Hazards Program and its partner networks, event hv226692 (also filed as usp000301w). Read Sun, Oct 4, 2026, 3:12 AM UTC.