Samoa earthquakes

M5.0 earthquake Samoa Islands region

A magnitude 5.0 earthquake struck in the Samoa Islands region on Sat, Jun 9, 2018, 5:13 PM GMT+13 (04:13 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.3 117 km ENE of Hihifo, Tonga. This one was a foreshock.

Apia forecast More in Samoa

Map

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

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The earthquake

Magnitude: 5.0 (mb, body-wave), moderate
Magnitude from: USGS National Earthquake Information Center
Local time: Sat, Jun 9, 2018, 5:13 PM GMT+13
UTC: 2018-06-09 04:13:41 UTC
Depth: 10.0 km (6.2 mi), shallow
Epicenter: 14.904° S, 173.221° W
Region: Samoa
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
5.0	mb, body-wave	USGS National Earthquake Information Center	Preferred · Reviewed · ±0.045 · 158 stations
5.06	Mw, moment	ISC-GEM global catalog	Final · ±0.1

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 8.0 km horizontally, 1.4 km in depth
Magnitude uncertainty: ±0.04
Depth from: Operator assigned
Station coverage gap: 60°
Stations used: 80

Nearest places

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

Apia, SamoaPopulation 40,407. Forecast197 kmSW

Nearby

Within 100 km, magnitude 2.0 and up: 9 in the 60 days after this one and 7 in the 30 days before it.

After

Before

Earthquakes today Samoa earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000elss (also filed as iscgem612081276). Read Sat, Oct 3, 2026, 3:32 AM UTC.