M4.9 earthquake 122 km WNW of Hihifo, Tonga
A magnitude 4.9 earthquake struck 122 km WNW of Hihifo, Tonga on Tue, Nov 20, 1973, 12:27 AM GMT-11 (11:27 UTC), 283 km (176 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1973-11-20 11:27:59 UTC
- Depth
- 283.0 km (175.8 mi), intermediate-depth
- Epicenter
- 15.520° S, 174.849° 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
- 14
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.9 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 usp0000479. Read Thu, Oct 1, 2026, 5:55 AM UTC.