Tonga earthquakes

M4.1 earthquake 173 km NW of Neiafu, Tonga

A magnitude 4.1 earthquake struck 173 km NW of Neiafu, Tonga on Thu, Jul 13, 2017, 10:27 PM GMT-12 (10:27 UTC), 242 km (151 mi) below the surface.

A larger quake followed: M4.7 145 km NW of Neiafu, Tonga. This one was a foreshock.

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The earthquake

Magnitude
4.1 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2017-07-14 10:27:08 UTC
Depth
242.4 km (150.6 mi), intermediate-depth
Epicenter
17.375° S, 174.931° 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 14.9 km horizontally, 17.2 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
135°
Stations used
19

Nearby

Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.5139 km NNW of Neiafu, Tonga · 3365 days ago · 80 km deep · 61 km away
  2. 4.1125 km SSW of Hihifo, Tonga · 3358 days ago · 130 km deep · 96 km away
  3. 4.7145 km NW of Neiafu, Tonga · 3358 days ago · 218 km deep · 36 km away
  4. 4.396 km N of Neiafu, Tonga · 3358 days ago · 10 km deep · 94 km away
  5. 4.490 km NW of Neiafu, Tonga · 3327 days ago · 77 km deep · 84 km away
  6. 4.5148 km NW of Neiafu, Tonga · 3325 days ago · 234 km deep · 34 km away

Before

  1. 4.4156 km WNW of Neiafu, Tonga · 3392 days ago · 211 km deep · 88 km away
  2. 4.2156 km NNW of Neiafu, Tonga · 3392 days ago · 240 km deep · 21 km away
  3. 4.3197 km SW of Hihifo, Tonga · 3397 days ago · 230 km deep · 38 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us20009y30. Read Fri, Oct 2, 2026, 6:36 AM UTC.