Hawaii earthquakes

M3.4 earthquake 6 km SSW of Volcano, Hawaii

A magnitude 3.4 earthquake struck 6 km SSW of Volcano, Hawaii on Thu, Sep 20, 1979, 9:18 AM HST (19:18 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M3.6 6 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
3.4 (ml), minor
Local time
UTC
1979-09-20 19:18:32 UTC
Depth
2.3 km (1.4 mi), shallow
Epicenter
19.390° N, 155.249° 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 0.3 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
43°
Stations used
31

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 200 in the 60 days after this one and 0 in the 30 days before it.

After

The first 60 of 200.

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event hv19793183. Read Tue, Sep 22, 2026, 8:30 AM UTC.