Tonga earthquakes

M4.5 earthquake 139 km NE of Neiafu, Tonga

A magnitude 4.5 earthquake struck 139 km NE of Neiafu, Tonga on Thu, Aug 29, 2019, 12:21 AM GMT-12 (12:21 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.5 176 km NE of Neiafu, Tonga. This one was a foreshock.

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

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The earthquake

Magnitude
4.5 (mb), light
Local time
UTC
2019-08-29 12:21:35 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
17.842° S, 172.970° 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 9.4 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.18
Depth from
Operator assigned
Station coverage gap
97°
Stations used
15

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 0 in the 30 days before it.

After

  1. 4.7Tonga · 2584 days ago · 10 km deep · 14 km away
  2. 4.6183 km SE of Hihifo, Tonga · 2583 days ago · 10 km deep · 59 km away
  3. 4.6218 km ENE of Neiafu, Tonga · 2570 days ago · 10 km deep · 98 km away
  4. 5.4160 km ENE of Neiafu, Tonga · 2567 days ago · 10 km deep · 71 km away
  5. 5.1165 km ENE of Neiafu, Tonga · 2567 days ago · 10 km deep · 75 km away
  6. 4.5194 km ENE of Neiafu, Tonga · 2567 days ago · 10 km deep · 69 km away
  7. 4.2175 km E of Neiafu, Tonga · 2567 days ago · 10 km deep · 94 km away
  8. 4.5132 km ENE of Neiafu, Tonga · 2567 days ago · 10 km deep · 56 km away
  9. 4.7203 km ENE of Neiafu, Tonga · 2567 days ago · 10 km deep · 83 km away
  10. 5.2181 km NE of Neiafu, Tonga · 2563 days ago · 10 km deep · 45 km away
  11. 5.2143 km E of Neiafu, Tonga · 2546 days ago · 10 km deep · 99 km away
  12. 4.4155 km SE of Hihifo, Tonga · 2543 days ago · 10 km deep · 89 km away
  13. 5.1Tonga region · 2539 days ago · 10 km deep · 99 km away
  14. 4.3200 km ENE of Neiafu, Tonga · 2538 days ago · 10 km deep · 91 km away
  15. 4.5202 km NE of Neiafu, Tonga · 2535 days ago · 10 km deep · 63 km away
  16. 5.5176 km NE of Neiafu, Tonga · 2533 days ago · 10 km deep · 37 km away
  17. 4.5187 km SE of Hihifo, Tonga · 2532 days ago · 10 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70005by0. Read Wed, Sep 30, 2026, 6:33 PM UTC.