M5.0 earthquake 35 km ENE of Neiafu, Tonga
A magnitude 5.0 earthquake struck 35 km ENE of Neiafu, Tonga on Mon, Oct 23, 1978, 12:00 AM GMT+13 (11:00 UTC), 87 km (54 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.0 (mb), moderate
- Local time
- UTC
- 1978-10-22 11:00:22 UTC
- Depth
- 87.0 km (54.1 mi), intermediate-depth
- Epicenter
- 18.510° S, 173.677° W
- Region
- Tonga
- 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.
- Depth from
- CONSTRAINED_BY_DEPTH_PHASES
- Stations used
- 46
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.0 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000x3d. Read Tue, Sep 29, 2026, 7:28 PM UTC.