Tonga earthquakes

M4.3 earthquake 281 km W of Haveluloto, Tonga

A magnitude 4.3 earthquake struck 281 km W of Haveluloto, Tonga on Tue, Aug 18, 2015, 1:09 PM GMT+13 (00:09 UTC), 479 km (298 mi) below the surface.

A larger quake followed: M4.5 294 km WSW 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
4.3 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2015-08-18 00:09:34 UTC
Depth
479.1 km (297.7 mi), deep
Epicenter
21.263° S, 177.919° 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.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 15.2 km horizontally, 11.2 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
118°
Stations used
35

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 4.2Fiji region · 4066 days ago · 595 km deep · 51 km away
  2. 4.5294 km WSW of Haveluloto, Tonga · 4062 days ago · 371 km deep · 61 km away
  3. 4.3284 km WNW of Haveluloto, Tonga · 4061 days ago · 545 km deep · 90 km away
  4. 4.3Fiji region · 4057 days ago · 585 km deep · 89 km away
  5. 4.4219 km W of Haveluloto, Tonga · 4051 days ago · 542 km deep · 66 km away
  6. 4.5282 km W of Haveluloto, Tonga · 4043 days ago · 483 km deep · 56 km away
  7. 4.4Fiji region · 4043 days ago · 601 km deep · 94 km away
  8. 4.2Fiji region · 4040 days ago · 591 km deep · 91 km away
  9. 4.1248 km W of Haveluloto, Tonga · 4038 days ago · 338 km deep · 35 km away
  10. 4.2Fiji region · 4036 days ago · 519 km deep · 50 km away
  11. 4.3Fiji region · 4035 days ago · 514 km deep · 77 km away
  12. 4.2Fiji region · 4030 days ago · 581 km deep · 93 km away
  13. 4.4Fiji region · 4029 days ago · 588 km deep · 79 km away
  14. 4.2Fiji region · 4013 days ago · 606 km deep · 83 km away
  15. 4.3Fiji region · 4011 days ago · 576 km deep · 66 km away
  16. 4.0Fiji region · 4010 days ago · 473 km deep · 50 km away
  17. 4.3Fiji region · 4009 days ago · 556 km deep · 86 km away

Before

  1. 4.3Fiji region · 4068 days ago · 549 km deep · 98 km away
  2. 4.1Fiji region · 4074 days ago · 543 km deep · 71 km away
  3. 4.5Fiji region · 4079 days ago · 579 km deep · 81 km away
  4. 4.3Fiji region · 4085 days ago · 528 km deep · 77 km away
  5. 4.5Fiji region · 4089 days ago · 598 km deep · 71 km away
  6. 4.1Fiji region · 4094 days ago · 497 km deep · 35 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us20003fr6. Read Mon, Oct 5, 2026, 9:32 AM UTC.