Tonga earthquakes

M4.1 earthquake 267 km NW of Haveluloto, Tonga

A magnitude 4.1 earthquake struck 267 km NW of Haveluloto, Tonga on Sun, Aug 16, 2020, 9:50 PM GMT+13 (08:50 UTC), 550 km (342 mi) below the surface.

A larger quake followed: M4.7 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
2020-08-16 08:50:01 UTC
Depth
549.8 km (341.6 mi), deep
Epicenter
19.702° S, 177.264° 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 15.7 km horizontally, 12.3 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
110°
Stations used
24

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 4.7Fiji region · 2232 days ago · 433 km deep · 55 km away
  2. 4.0Fiji region · 2232 days ago · 565 km deep · 46 km away
  3. 4.6288 km WNW of Haveluloto, Tonga · 2229 days ago · 558 km deep · 91 km away
  4. 4.1Fiji region · 2227 days ago · 533 km deep · 48 km away
  5. 4.0Fiji region · 2227 days ago · 578 km deep · 43 km away
  6. 4.4Fiji region · 2227 days ago · 565 km deep · 99 km away
  7. 4.4259 km WNW of Haveluloto, Tonga · 2220 days ago · 492 km deep · 68 km away
  8. 4.2293 km WNW of Haveluloto, Tonga · 2219 days ago · 545 km deep · 44 km away
  9. 4.5258 km WNW of Haveluloto, Tonga · 2206 days ago · 513 km deep · 96 km away
  10. 4.2276 km WNW of Haveluloto, Tonga · 2201 days ago · 537 km deep · 62 km away
  11. 4.1Fiji region · 2199 days ago · 585 km deep · 63 km away
  12. 4.2295 km WNW of Haveluloto, Tonga · 2190 days ago · 404 km deep · 74 km away
  13. 4.5Fiji region · 2190 days ago · 503 km deep · 63 km away
  14. 4.1Fiji region · 2190 days ago · 584 km deep · 75 km away
  15. 4.4290 km NW of Haveluloto, Tonga · 2180 days ago · 544 km deep · 24 km away

Before

  1. 4.4Fiji region · 2238 days ago · 559 km deep · 84 km away
  2. 4.0Fiji region · 2243 days ago · 579 km deep · 67 km away
  3. 4.5Fiji region · 2249 days ago · 571 km deep · 74 km away
  4. 4.0282 km WNW of Haveluloto, Tonga · 2250 days ago · 542 km deep · 91 km away
  5. 4.2273 km WNW of Haveluloto, Tonga · 2256 days ago · 547 km deep · 44 km away
  6. 4.2253 km WNW of Pangai, Tonga · 2257 days ago · 560 km deep · 91 km away
  7. 4.3Fiji region · 2266 days ago · 547 km deep · 86 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000bib1. Read Wed, Sep 30, 2026, 7:34 AM UTC.