M4.8 earthquake 192 km W of Hihifo, Tonga
A magnitude 4.8 earthquake struck 192 km W of Hihifo, Tonga on Thu, Dec 13, 1984, 2:20 PM GMT-12 (02:20 UTC), 351 km (218 mi) below the surface.
A larger quake followed: M5.1 107 km WNW 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
- 4.8 (mb), light
- Local time
- UTC
- 1984-12-14 02:20:21 UTC
- Depth
- 351.0 km (218.1 mi), deep
- Epicenter
- 15.817° S, 175.590° 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.
Nearby
Within 100 km, magnitude 1.8 and up: 1 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 usp0002a0n. Read Tue, Sep 22, 2026, 10:53 AM UTC.