Tonga earthquakes

M4.4 earthquake 135 km NNE of Neiafu, Tonga

A magnitude 4.4 earthquake struck 135 km NNE of Neiafu, Tonga on Tue, Apr 3, 2018, 7:25 PM GMT-12 (07:25 UTC), 78 km (48 mi) below the surface.

A larger quake followed: M5.5 131 km NE of Neiafu, Tonga. This one was a foreshock.

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The earthquake

Magnitude
4.4 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2018-04-04 07:25:06 UTC
Depth
77.7 km (48.3 mi), intermediate-depth
Epicenter
17.467° S, 173.654° 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 10.0 km horizontally, 12.2 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
127°
Stations used
16

Nearby

Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 2 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000dyv2. Read Fri, Oct 2, 2026, 4:35 AM UTC.