M4.7 earthquake 140 km NW of Hihifo, Tonga
A magnitude 4.7 earthquake struck 140 km NW of Hihifo, Tonga on Sat, Jul 13, 1985, 6:49 PM GMT-11 (05:49 UTC), 278 km (173 mi) below the surface.
A larger quake followed: M4.8 110 km NNW of Hihifo, Tonga. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.7 (mb), light
- Local time
- UTC
- 1985-07-14 05:49:17 UTC
- Depth
- 278.3 km (172.9 mi), intermediate-depth
- Epicenter
- 15.212° S, 174.864° 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
- FROM_LOCATION
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.7 and up: 3 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayTonga earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002gsb. Read Tue, Sep 22, 2026, 7:05 AM UTC.