M5.1 earthquake 97 km SSE of ‘Ohonua, Tonga
A magnitude 5.1 earthquake struck 97 km SSE of ‘Ohonua, Tonga on Sun, Mar 26, 1978, 11:46 PM GMT+13 (10:46 UTC), 45 km (28 mi) below the surface.
A larger quake followed: M5.8 59 km E 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
- 5.1 (mb, body-wave), moderate
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1978-03-26 10:46:28 UTC
- Depth
- 45.0 km (28.0 mi), shallow
- Epicenter
- 22.089° S, 174.459° 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 2.1 and up: 8 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.2113 km SE of ‘Ohonua, Tonga · 17721 days ago · 33 km deep · 21 km away
- 5.067 km ESE of ‘Ohonua, Tonga · 17718 days ago · 33 km deep · 59 km away
- 5.7108 km ESE of ‘Ohonua, Tonga · 17718 days ago · 33 km deep · 59 km away
- 5.2120 km SE of ‘Ohonua, Tonga · 17715 days ago · 33 km deep · 45 km away
- 5.859 km E of ‘Ohonua, Tonga · 17692 days ago · 33 km deep · 92 km away
- 4.975 km E of ‘Ohonua, Tonga · 17691 days ago · 33 km deep · 91 km away
- 5.488 km SE of ‘Ohonua, Tonga · 17677 days ago · 33 km deep · 11 km away
- 5.0141 km SSE of ‘Ohonua, Tonga · 17673 days ago · 33 km deep · 44 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000trh. Read Thu, Oct 1, 2026, 12:02 PM UTC.