Tonga earthquakes

M4.1 earthquake 264 km WNW of Haveluloto, Tonga

A magnitude 4.1 earthquake struck 264 km WNW of Haveluloto, Tonga on Thu, Sep 9, 2021, 1:46 AM GMT+13 (12:46 UTC), 563 km (350 mi) below the surface.

A larger quake followed: M5.5 Fiji region. 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
4.1 (mb), light
Local time
UTC
2021-09-08 12:46:08 UTC
Depth
562.7 km (349.6 mi), deep
Epicenter
19.996° S, 177.435° 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.

Location uncertainty
About 12.7 km horizontally, 10.5 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
137°
Stations used
17

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 6 in the 30 days before it.

After

  1. 4.1Fiji region · 1845 days ago · 558 km deep · 66 km away
  2. 4.1205 km WNW of Haveluloto, Tonga · 1845 days ago · 314 km deep · 91 km away
  3. 4.2Fiji region · 1840 days ago · 595 km deep · 69 km away
  4. 4.3Fiji region · 1838 days ago · 601 km deep · 93 km away
  5. 4.2257 km WNW of Haveluloto, Tonga · 1836 days ago · 500 km deep · 8 km away
  6. 4.4258 km WNW of Haveluloto, Tonga · 1831 days ago · 527 km deep · 63 km away
  7. 4.2260 km WNW of Haveluloto, Tonga · 1830 days ago · 510 km deep · 38 km away
  8. 4.4291 km NW of Nuku‘alofa, Tonga · 1828 days ago · 574 km deep · 76 km away
  9. 4.3277 km WNW of Haveluloto, Tonga · 1827 days ago · 565 km deep · 26 km away
  10. 4.3280 km WNW of Haveluloto, Tonga · 1815 days ago · 372 km deep · 16 km away
  11. 4.5Fiji region · 1809 days ago · 395 km deep · 35 km away
  12. 4.3265 km WNW of Haveluloto, Tonga · 1806 days ago · 511 km deep · 73 km away
  13. 4.2Fiji region · 1806 days ago · 437 km deep · 74 km away
  14. 4.0277 km WNW of Haveluloto, Tonga · 1804 days ago · 533 km deep · 26 km away
  15. 4.0276 km WNW of Haveluloto, Tonga · 1795 days ago · 554 km deep · 11 km away
  16. 4.2253 km WNW of Haveluloto, Tonga · 1795 days ago · 505 km deep · 53 km away
  17. 5.5Fiji region · 1795 days ago · 381 km deep · 47 km away
  18. 4.1280 km WNW of Haveluloto, Tonga · 1788 days ago · 558 km deep · 21 km away
  19. 4.0Fiji region · 1787 days ago · 568 km deep · 82 km away

Before

  1. 4.2279 km NW of Haveluloto, Tonga · 1850 days ago · 563 km deep · 43 km away
  2. 4.1Fiji region · 1854 days ago · 550 km deep · 59 km away
  3. 4.2257 km WNW of Haveluloto, Tonga · 1859 days ago · 401 km deep · 29 km away
  4. 4.0276 km WNW of Haveluloto, Tonga · 1864 days ago · 540 km deep · 53 km away
  5. 4.6Fiji region · 1865 days ago · 417 km deep · 92 km away
  6. 4.2276 km WNW of Haveluloto, Tonga · 1870 days ago · 594 km deep · 33 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000fbfz. Read Mon, Sep 28, 2026, 9:10 PM UTC.