M5.0 earthquake 189 km SE of Hihifo, Tonga
A magnitude 5.0 earthquake struck 189 km SE of Hihifo, Tonga on Fri, Oct 5, 1973, 7:30 AM GMT-12 (19:30 UTC), 33 km (21 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, body-wave), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1973-10-05 19:30:07 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 17.354° S, 172.766° 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
- 13
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 usp00003q7. Read Fri, Oct 2, 2026, 4:16 AM UTC.