Samoa earthquakes

M4.4 earthquake 129 km SW of Gataivai, Samoa

A magnitude 4.4 earthquake struck 129 km SW of Gataivai, Samoa on Sat, Oct 2, 2021, 6:15 PM GMT+13 (05:15 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.4 81 km NE of Hihifo, 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), light
Local time
UTC
2021-10-02 05:15:40 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
14.693° S, 173.133° W
Region
Samoa
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, 1.7 km in depth
Magnitude uncertainty
±0.22
Depth from
Operator assigned
Station coverage gap
62°
Stations used
12

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 5.481 km NE of Hihifo, Tonga · 1820 days ago · 35 km deep · 83 km away · felt by 4
  2. 4.294 km NE of Hihifo, Tonga · 1792 days ago · 10 km deep · 81 km away
  3. 4.2115 km NNE of Hihifo, Tonga · 1781 days ago · 10 km deep · 49 km away
  4. 4.385 km NNE of Hihifo, Tonga · 1774 days ago · 35 km deep · 72 km away
  5. 5.4130 km NE of Hihifo, Tonga · 1769 days ago · 10 km deep · 36 km away · felt by 4
  6. 5.2114 km NNE of Hihifo, Tonga · 1769 days ago · 10 km deep · 42 km away · felt by 2

Before

  1. 5.8135 km SW of Gataivai, Samoa · 1824 days ago · 20 km deep · 21 km away · felt by 3
  2. 4.6136 km NNE of Hihifo, Tonga · 1824 days ago · 10 km deep · 24 km away
  3. 4.371 km NE of Hihifo, Tonga · 1830 days ago · 35 km deep · 98 km away
  4. 4.3105 km NNE of Hihifo, Tonga · 1833 days ago · 149 km deep · 52 km away
  5. 4.995 km N of Hihifo, Tonga · 1842 days ago · 110 km deep · 94 km away · felt by 1
  6. 4.7106 km NE of Hihifo, Tonga · 1849 days ago · 10 km deep · 74 km away
  7. 4.692 km NNE of Hihifo, Tonga · 1852 days ago · 10 km deep · 72 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000fsll. Read Wed, Sep 30, 2026, 9:41 AM UTC.