M4.8 earthquake 186 km W of Neiafu, Tonga
A magnitude 4.8 earthquake struck 186 km W of Neiafu, Tonga on Mon, Aug 14, 1978, 1:00 PM GMT+13 (00:00 UTC), 196 km (122 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (mb), light
- Local time
- UTC
- 1978-08-14 00:00:00 UTC
- Depth
- 196.0 km (121.8 mi), intermediate-depth
- Epicenter
- 18.546° S, 175.743° 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.
- Stations used
- 22
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 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 usp0000w20. Read Wed, Sep 30, 2026, 6:46 PM UTC.