Tonga earthquakes

M4.6 earthquake 135 km N of Neiafu, Tonga

A magnitude 4.6 earthquake struck 135 km N of Neiafu, Tonga on Thu, Jul 18, 2019, 9:21 PM GMT-12 (09:21 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.7 42 km NNW 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
4.6 (mb), light
Local time
UTC
2019-07-19 09:21:32 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
17.441° S, 174.205° 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 9.6 km horizontally, 1.8 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
68°
Stations used
63

Nearby

Within 100 km, magnitude 1.6 and up: 6 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 4.5103 km NW of Neiafu, Tonga · 2617 days ago · 77 km deep · 76 km away
  2. 4.4158 km NW of Neiafu, Tonga · 2613 days ago · 183 km deep · 98 km away
  3. 4.662 km NNW of Neiafu, Tonga · 2612 days ago · 10 km deep · 74 km away
  4. 4.2125 km NW of Neiafu, Tonga · 2599 days ago · 239 km deep · 81 km away
  5. 4.742 km NNW of Neiafu, Tonga · 2597 days ago · 10 km deep · 96 km away
  6. 4.4109 km S of Hihifo, Tonga · 2596 days ago · 122 km deep · 71 km away

Before

  1. 4.5148 km S of Hihifo, Tonga · 2654 days ago · 41 km deep · 33 km away
  2. 5.5112 km NNE of Neiafu, Tonga · 2659 days ago · 48 km deep · 58 km away
  3. 4.1169 km NW of Neiafu, Tonga · 2660 days ago · 247 km deep · 87 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70004nrx. Read Wed, Sep 30, 2026, 3:51 AM UTC.