Tonga earthquakes

M5.5 earthquake 143 km NE of Neiafu, Tonga

A magnitude 5.5 earthquake struck 143 km NE of Neiafu, Tonga on Mon, Oct 18, 1982, 3:34 PM GMT-12 (03:34 UTC), 53 km (33 mi) below the surface.

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The earthquake

Magnitude
5.5 (mb), moderate
Local time
UTC
1982-10-19 03:34:32 UTC
Depth
53.0 km (32.9 mi), shallow
Epicenter
17.889° S, 172.888° 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 2.5 and up: 2 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 4.3169 km ENE of Neiafu, Tonga · 16035 days ago · 33 km deep · 52 km away
  2. 5.086 km E of Neiafu, Tonga · 16025 days ago · 33 km deep · 99 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001qbh (also filed as gcmtb101982a, gcmt19821019033436, iscgem590698). Read Tue, Sep 22, 2026, 10:32 AM UTC.