Tonga earthquakes

M5.6 earthquake 250 km SW of Vaini, Tonga

A magnitude 5.6 earthquake struck 250 km SW of Vaini, Tonga on Wed, Jun 17, 1987, 9:17 AM GMT+13 (20:17 UTC), 146 km (91 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
5.6 (mw), moderate
Local time
UTC
1987-06-16 20:17:02 UTC
Depth
146.1 km (90.8 mi), intermediate-depth
Epicenter
22.931° S, 176.727° 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

Nearest places

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

Nearby

Within 100 km, magnitude 2.5 and up: 4 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 5.0south of the Fiji Islands · 14320 days ago · 224 km deep · 70 km away
  2. 5.2160 km SW of Vaini, Tonga · 14319 days ago · 33 km deep · 93 km away
  3. 4.8166 km SW of Haveluloto, Tonga · 14307 days ago · 178 km deep · 96 km away
  4. 5.1249 km SW of Vaini, Tonga · 14301 days ago · 100 km deep · 26 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00035uj (also filed as gcmtb061687a, gcmt19870616201659, iscgem464485). Read Thu, Sep 24, 2026, 4:46 AM UTC.