Tonga earthquakes

M4.6 earthquake 92 km WSW of Hihifo, Tonga

A magnitude 4.6 earthquake struck 92 km WSW of Hihifo, Tonga on Tue, Dec 16, 1986, 5:44 AM GMT-12 (17:44 UTC), 121 km (75 mi) below the surface.

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The earthquake

Magnitude
4.6 (mb), light
Local time
UTC
1986-12-16 17:44:44 UTC
Depth
121.0 km (75.2 mi), intermediate-depth
Epicenter
16.411° S, 174.526° 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

Nearby

Within 100 km, magnitude 1.6 and up: 0 in the 60 days after this one and 3 in the 30 days before it.

Before

  1. 4.8104 km WNW of Hihifo, Tonga · 14536 days ago · 295 km deep · 100 km away
  2. 5.593 km WNW of Hihifo, Tonga · 14538 days ago · 33 km deep · 77 km away
  3. 5.735 km SSW of Hihifo, Tonga · 14542 days ago · 106 km deep · 66 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00030x7. Read Tue, Sep 22, 2026, 8:52 AM UTC.