Tonga earthquakes

M4.4 earthquake 71 km WSW of Neiafu, Tonga

A magnitude 4.4 earthquake struck 71 km WSW of Neiafu, Tonga on Mon, Aug 14, 2017, 12:44 AM GMT+13 (11:44 UTC), 113 km (70 mi) below the surface.

A larger quake followed: M6.1 156 km NW of Pangai, Tonga. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
4.4 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2017-08-13 11:44:11 UTC
Depth
113.2 km (70.3 mi), intermediate-depth
Epicenter
18.824° S, 174.633° 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 19.8 km horizontally, 11.1 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
184°, poorly surrounded by stations
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 4.696 km WSW of Neiafu, Tonga · 3334 days ago · 66 km deep · 25 km away
  2. 4.490 km NW of Neiafu, Tonga · 3327 days ago · 77 km deep · 88 km away
  3. 4.584 km NNW of Pangai, Tonga · 3315 days ago · 100 km deep · 43 km away
  4. 4.431 km N of Neiafu, Tonga · 3313 days ago · 10 km deep · 81 km away
  5. 4.9108 km WSW of Neiafu, Tonga · 3301 days ago · 129 km deep · 38 km away
  6. 5.0152 km WNW of Neiafu, Tonga · 3298 days ago · 213 km deep · 97 km away
  7. 4.638 km NW of Neiafu, Tonga · 3292 days ago · 131 km deep · 69 km away
  8. 4.7120 km W of Neiafu, Tonga · 3282 days ago · 10 km deep · 52 km away
  9. 6.1156 km NW of Pangai, Tonga · 3280 days ago · 10 km deep · 100 km away · felt by 1

Before

  1. 4.668 km W of Neiafu, Tonga · 3343 days ago · 128 km deep · 6 km away
  2. 4.377 km WSW of Neiafu, Tonga · 3355 days ago · 74 km deep · 7 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000a92x. Read Thu, Oct 1, 2026, 11:21 PM UTC.