Hawaii earthquakes

M2.5 earthquake 16 km S of Volcano, Hawaii

A magnitude 2.5 earthquake struck 16 km S of Volcano, Hawaii on Sat, Sep 28, 1968, 6:26 AM GMT-10 (16:26 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.1 18 km S of Volcano, Hawaii. This one was a foreshock.

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

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The earthquake

Magnitude
2.5 (ml), micro
Local time
UTC
1968-09-28 16:26:45 UTC
Depth
7.1 km (4.4 mi), shallow
Epicenter
19.292° N, 155.239° W
Region
Hawaii
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.8 km horizontally, 1.7 km in depth
Depth from
From location
Station coverage gap
157°
Stations used
15

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 156 in the 60 days after this one and 43 in the 30 days before it.

After

The first 60 of 156.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event hv19681066. Read Tue, Sep 22, 2026, 5:28 PM UTC.