Tonga earthquakes

M5.0 earthquake 117 km SSW of Hihifo, Tonga

A magnitude 5.0 earthquake struck 117 km SSW of Hihifo, Tonga on Mon, Apr 26, 1982, 7:54 PM GMT-12 (07:54 UTC), 108 km (67 mi) below the surface.

A larger quake followed: M6.3 123 km NNW of Neiafu, Tonga. This one was a foreshock.

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The earthquake

Magnitude
5.0 (mb), moderate
Local time
UTC
1982-04-27 07:54:41 UTC
Depth
108.0 km (67.1 mi), intermediate-depth
Epicenter
16.982° S, 174.070° 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
CONSTRAINED_BY_DEPTH_PHASES

Nearby

Within 100 km, magnitude 2.0 and up: 8 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 4.5104 km SW of Hihifo, Tonga · 16219 days ago · 115 km deep · 45 km away
  2. 4.0Tonga · 16199 days ago · 212 km deep · 36 km away
  3. 6.3123 km NNW of Neiafu, Tonga · 16174 days ago · 123 km deep · 79 km away
  4. 5.5116 km NNW of Neiafu, Tonga · 16174 days ago · 119 km deep · 86 km away
  5. 4.9119 km NNW of Neiafu, Tonga · 16174 days ago · 121 km deep · 79 km away
  6. 4.3155 km NNW of Neiafu, Tonga · 16174 days ago · 123 km deep · 58 km away
  7. 4.9127 km NNW of Neiafu, Tonga · 16170 days ago · 120 km deep · 67 km away
  8. 4.9158 km NNW of Neiafu, Tonga · 16167 days ago · 124 km deep · 54 km away

Before

  1. 4.898 km SSE of Hihifo, Tonga · 16229 days ago · 54 km deep · 52 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001kz3 (also filed as gcmtb042782b, gcmt19820427075441, iscgem601365). Read Tue, Sep 22, 2026, 8:42 AM UTC.