M5.4 earthquake 213 km S of ‘Ohonua, Tonga
A magnitude 5.4 earthquake struck 213 km S of ‘Ohonua, Tonga on Sun, Feb 17, 1985, 2:48 AM GMT+13 (13:48 UTC), 42 km (26 mi) below the surface.
A larger quake followed: M5.5 206 km S 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
- 5.4 (mw), moderate
- Local time
- UTC
- 1985-02-16 13:48:46 UTC
- Depth
- 42.3 km (26.3 mi), shallow
- Epicenter
- 23.261° S, 175.014° 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
- CONSTRAINED_BY_DEPTH_PHASES
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.4 and up: 6 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.9248 km S of ‘Ohonua, Tonga · 15193 days ago · 33 km deep · 43 km away
- 5.0191 km S of ‘Ohonua, Tonga · 15192 days ago · 43 km deep · 32 km away
- 5.5206 km S of ‘Ohonua, Tonga · 15192 days ago · 42 km deep · 12 km away
- 4.9227 km S of ‘Ohonua, Tonga · 15192 days ago · 39 km deep · 21 km away
- 4.9245 km S of ‘Ohonua, Tonga · 15154 days ago · 33 km deep · 42 km away
- 4.6235 km S of ‘Ohonua, Tonga · 15150 days ago · 33 km deep · 26 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002byg (also filed as gcmtb021685a, gcmt19850216134851, iscgem532375). Read Tue, Sep 22, 2026, 6:10 AM UTC.