Tonga earthquakes

M4.2 earthquake 271 km W of Haveluloto, Tonga

A magnitude 4.2 earthquake struck 271 km W of Haveluloto, Tonga on Sat, Jul 4, 2015, 1:57 PM GMT+13 (00:57 UTC), 484 km (301 mi) below the surface.

A larger quake followed: M4.7 266 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
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2015-07-04 00:57:34 UTC
Depth
484.5 km (301.0 mi), deep
Epicenter
20.981° S, 177.820° 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 14.3 km horizontally, 8.9 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
104°
Stations used
27

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 19 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 4.3Fiji region · 4107 days ago · 596 km deep · 58 km away
  2. 4.4Fiji region · 4106 days ago · 574 km deep · 87 km away
  3. 4.4277 km WNW of Haveluloto, Tonga · 4106 days ago · 487 km deep · 90 km away
  4. 4.2Fiji region · 4103 days ago · 566 km deep · 75 km away
  5. 4.3Fiji region · 4099 days ago · 574 km deep · 90 km away
  6. 4.1Fiji region · 4096 days ago · 464 km deep · 97 km away
  7. 4.1Fiji region · 4093 days ago · 497 km deep · 18 km away
  8. 4.5Fiji region · 4088 days ago · 598 km deep · 71 km away
  9. 4.3Fiji region · 4084 days ago · 528 km deep · 93 km away
  10. 4.7266 km WNW of Haveluloto, Tonga · 4079 days ago · 501 km deep · 100 km away
  11. 4.5Fiji region · 4078 days ago · 579 km deep · 84 km away
  12. 4.1Fiji region · 4075 days ago · 561 km deep · 92 km away
  13. 4.1Fiji region · 4072 days ago · 543 km deep · 67 km away
  14. 4.3281 km W of Haveluloto, Tonga · 4065 days ago · 479 km deep · 33 km away
  15. 4.2Fiji region · 4065 days ago · 595 km deep · 83 km away
  16. 4.1Fiji region · 4064 days ago · 558 km deep · 81 km away
  17. 4.5294 km WSW of Haveluloto, Tonga · 4060 days ago · 371 km deep · 93 km away
  18. 4.3284 km WNW of Haveluloto, Tonga · 4059 days ago · 545 km deep · 58 km away
  19. 4.3Fiji region · 4056 days ago · 585 km deep · 73 km away

Before

  1. 4.3Fiji region · 4114 days ago · 460 km deep · 75 km away
  2. 4.3241 km WNW of Haveluloto, Tonga · 4114 days ago · 526 km deep · 93 km away
  3. 6.0Fiji region · 4122 days ago · 563 km deep · 81 km away · tsunami flag
  4. 4.4Fiji region · 4124 days ago · 547 km deep · 60 km away
  5. 4.0Fiji region · 4130 days ago · 453 km deep · 93 km away
  6. 4.1267 km WNW of Haveluloto, Tonga · 4134 days ago · 492 km deep · 78 km away
  7. 4.6Fiji region · 4135 days ago · 578 km deep · 96 km away
  8. 4.4282 km WNW of Haveluloto, Tonga · 4136 days ago · 550 km deep · 84 km away
  9. 4.0Fiji region · 4139 days ago · 395 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us20002z6m. Read Sun, Oct 4, 2026, 5:47 AM UTC.