Tonga earthquakes

M4.5 earthquake 104 km SW of Hihifo, Tonga

A magnitude 4.5 earthquake struck 104 km SW of Hihifo, Tonga on Mon, Apr 26, 1982, 8:12 PM GMT-12 (08:12 UTC), 115 km (71 mi) below the surface.

A larger quake followed: M4.7 Tonga. This one was a foreshock.

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The earthquake

Magnitude
4.5 (mb), light
Local time
UTC
1982-04-27 08:12:21 UTC
Depth
115.0 km (71.5 mi), intermediate-depth
Epicenter
16.706° S, 174.382° 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

Nearby

Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 4.7Tonga · 16201 days ago · 106 km deep · 89 km away
  2. 4.0Tonga · 16199 days ago · 212 km deep · 15 km away
  3. 4.3155 km NNW of Neiafu, Tonga · 16174 days ago · 123 km deep · 70 km away
  4. 4.9127 km NNW of Neiafu, Tonga · 16170 days ago · 120 km deep · 93 km away
  5. 4.9158 km NNW of Neiafu, Tonga · 16167 days ago · 124 km deep · 66 km away

Before

  1. 5.0117 km SSW of Hihifo, Tonga · 16219 days ago · 108 km deep · 45 km away
  2. 4.898 km SSE of Hihifo, Tonga · 16229 days ago · 54 km deep · 83 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001kz5. Read Tue, Sep 22, 2026, 7:26 AM UTC.