Tonga earthquakes

M4.8 earthquake 278 km WNW of Haveluloto, Tonga

A magnitude 4.8 earthquake struck 278 km WNW of Haveluloto, Tonga on Wed, Jun 10, 1981, 3:35 AM GMT+13 (14:35 UTC), 510 km (317 mi) below the surface.

A larger quake followed: M5.2 288 km WNW of Haveluloto, Tonga. This one was a foreshock.

Nuku‘alofa forecastMore in Tonga

Map

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

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The earthquake

Magnitude
4.8 (mb), light
Local time
UTC
1981-06-09 14:35:14 UTC
Depth
509.8 km (316.8 mi), deep
Epicenter
20.321° S, 177.741° 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 1.8 and up: 8 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 5.2288 km WNW of Haveluloto, Tonga · 16541 days ago · 531 km deep · 33 km away
  2. 4.8236 km WNW of Haveluloto, Tonga · 16539 days ago · 342 km deep · 76 km away
  3. 5.0288 km WNW of Haveluloto, Tonga · 16538 days ago · 402 km deep · 29 km away
  4. 5.1Fiji region · 16525 days ago · 591 km deep · 96 km away
  5. 4.3276 km WNW of Haveluloto, Tonga · 16513 days ago · 486 km deep · 26 km away
  6. 4.7Fiji region · 16508 days ago · 605 km deep · 75 km away
  7. 4.8Fiji region · 16506 days ago · 409 km deep · 91 km away
  8. 4.6Fiji region · 16505 days ago · 541 km deep · 91 km away

Before

  1. 4.7274 km W of Haveluloto, Tonga · 16553 days ago · 478 km deep · 51 km away
  2. 4.5Fiji region · 16562 days ago · 548 km deep · 49 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001e2f. Read Sat, Sep 26, 2026, 3:42 PM UTC.