Tonga earthquakes

M6.0 earthquake 94 km ENE of Hihifo, Tonga

A magnitude 6.0 earthquake struck 94 km ENE of Hihifo, Tonga on Sat, Apr 21, 1984, 1:36 AM GMT-11 (12:36 UTC), 73 km (45 mi) below the surface.

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Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
6.0 (mw), strong
Local time
UTC
1984-04-21 12:36:16 UTC
Depth
73.0 km (45.4 mi), intermediate-depth
Epicenter
15.681° S, 172.965° 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.

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 2.5 and up: 6 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 4.878 km ENE of Hihifo, Tonga · 15494 days ago · 33 km deep · 19 km away
  2. 4.8100 km E of Hihifo, Tonga · 15493 days ago · 33 km deep · 45 km away
  3. 4.9136 km E of Hihifo, Tonga · 15489 days ago · 33 km deep · 51 km away
  4. 4.685 km NNE of Hihifo, Tonga · 15486 days ago · 33 km deep · 75 km away
  5. 4.767 km NE of Hihifo, Tonga · 15476 days ago · 33 km deep · 49 km away
  6. 4.686 km NNE of Hihifo, Tonga · 15455 days ago · 33 km deep · 60 km away

Before

  1. 6.084 km N of Hihifo, Tonga · 15523 days ago · 45 km deep · 99 km away
  2. 5.7143 km SSW of Lotofag?, Samoa · 15524 days ago · 42 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00023rs (also filed as gcmtb042184a, gcmt19840421123611, iscgem555544). Read Tue, Sep 22, 2026, 12:18 PM UTC.