M5.5 earthquake 229 km S of ‘Ohonua, Tonga
A magnitude 5.5 earthquake struck 229 km S of ‘Ohonua, Tonga on Wed, Mar 11, 1981, 8:17 PM GMT+13 (07:17 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
- 5.5 (ms), moderate
- Local time
- UTC
- 1981-03-11 07:17:07 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 23.378° S, 175.291° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 6 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.4225 km SSW of ‘Ohonua, Tonga · 16637 days ago · 33 km deep · 11 km away
- 5.1269 km S of ‘Ohonua, Tonga · 16637 days ago · 33 km deep · 41 km away
- 4.6210 km SSW of ‘Ohonua, Tonga · 16637 days ago · 33 km deep · 22 km away
- 4.5224 km S of ‘Ohonua, Tonga · 16632 days ago · 33 km deep · 14 km away
- 5.5234 km S of ‘Ohonua, Tonga · 16607 days ago · 35 km deep · 8 km away
- 5.2236 km S of ‘Ohonua, Tonga · 16604 days ago · 40 km deep · 15 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001cn6 (also filed as gcmtb031181a, gcmt19810311071707, iscgem629689). Read Mon, Sep 28, 2026, 6:06 AM UTC.