M5.1 earthquake 220 km W of Hihifo, Tonga
A magnitude 5.1 earthquake struck 220 km W of Hihifo, Tonga on Tue, Apr 24, 1973, 6:40 PM GMT-12 (06:40 UTC), 350 km (217 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (mb), moderate
- Local time
- UTC
- 1973-04-25 06:40:27 UTC
- Depth
- 350.0 km (217.5 mi), deep
- Epicenter
- 15.608° S, 175.818° 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
- OPERATOR_ASSIGNED
- Stations used
- 69
Nearby
Within 100 km, magnitude 2.1 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 usp00001j6. Read Tue, Sep 22, 2026, 8:44 PM UTC.