M5.0 earthquake 291 km SSW of ‘Ohonua, Tonga
A magnitude 5.0 earthquake struck 291 km SSW of ‘Ohonua, Tonga on Sun, Sep 22, 1974, 5:10 PM GMT+13 (04:10 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 247 km SSW of ‘Ohonua, Tonga. This one was a foreshock.
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
- 1974-09-22 04:10:58 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 23.757° S, 176.055° 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
- 26
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.0 and up: 3 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.5282 km S of ‘Ohonua, Tonga · 19001 days ago · 33 km deep · 90 km away
- 4.7south of the Fiji Islands · 19000 days ago · 33 km deep · 35 km away
- 5.2247 km SSW of ‘Ohonua, Tonga · 18997 days ago · 33 km deep · 47 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000849. Read Wed, Sep 30, 2026, 10:25 PM UTC.