M5.4 earthquake 259 km S of ‘Ohonua, Tonga
A magnitude 5.4 earthquake struck 259 km S of ‘Ohonua, Tonga on Fri, Feb 15, 1985, 10:20 PM GMT+13 (09:20 UTC), 33 km (21 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
- 1985-02-15 09:20:58 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 23.662° S, 175.229° 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 2.4 and up: 10 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.3214 km SSW of ‘Ohonua, Tonga · 15193 days ago · 256 km deep · 90 km away
- 5.4213 km S of ‘Ohonua, Tonga · 15192 days ago · 42 km deep · 50 km away
- 4.9248 km S of ‘Ohonua, Tonga · 15192 days ago · 33 km deep · 13 km away
- 5.0191 km S of ‘Ohonua, Tonga · 15192 days ago · 43 km deep · 69 km away
- 5.5206 km S of ‘Ohonua, Tonga · 15192 days ago · 42 km deep · 54 km away
- 4.9227 km S of ‘Ohonua, Tonga · 15191 days ago · 39 km deep · 32 km away
- 4.9245 km S of ‘Ohonua, Tonga · 15153 days ago · 33 km deep · 17 km away
- 4.6235 km S of ‘Ohonua, Tonga · 15149 days ago · 33 km deep · 25 km away
- 5.0299 km SSW of ‘Ohonua, Tonga · 15148 days ago · 33 km deep · 53 km away
- 5.1south of Tonga · 15145 days ago · 33 km deep · 88 km away
Before
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002bxe (also filed as gcmtb021585a, gcmt19850215092057, iscgem532312). Read Mon, Sep 21, 2026, 6:20 PM UTC.