Tonga earthquakes

M4.6 earthquake 86 km SW of Hihifo, Tonga

A magnitude 4.6 earthquake struck 86 km SW of Hihifo, Tonga on Wed, Oct 31, 1984, 9:36 AM GMT-12 (21:36 UTC), 192 km (119 mi) below the surface.

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The earthquake

Magnitude
4.6 (mb), light
Local time
UTC
1984-10-31 21:36:40 UTC
Depth
191.5 km (119.0 mi), intermediate-depth
Epicenter
16.597° S, 174.264° 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 4 in the 30 days before it.

Before

  1. 6.6131 km SSW of Hihifo, Tonga · 15302 days ago · 141 km deep · 60 km away
  2. 4.4116 km S of Hihifo, Tonga · 15309 days ago · 33 km deep · 72 km away
  3. 4.459 km S of Hihifo, Tonga · 15309 days ago · 33 km deep · 55 km away
  4. 6.018 km WNW of Hihifo, Tonga · 15313 days ago · 121 km deep · 86 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00028pj. Read Tue, Sep 22, 2026, 11:23 AM UTC.