Samoa earthquakes

M5.0 earthquake 157 km SSW of Lotofag?, Samoa

A magnitude 5.0 earthquake struck 157 km SSW of Lotofag?, Samoa on Sat, Sep 9, 2017, 4:20 AM GMT+13 (15:20 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M6.8 97 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
5.0 (mb, body-wave), moderate
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2017-09-08 15:20:05 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
15.280° S, 172.453° 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 6.6 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.05
Depth from
Operator assigned
Station coverage gap
62°
Stations used
115

Nearest places

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

Nearby

Within 100 km, magnitude 2.0 and up: 17 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 4.7132 km ENE of Hihifo, Tonga · 3305 days ago · 10 km deep · 32 km away
  2. 4.4107 km NNE of Hihifo, Tonga · 3272 days ago · 29 km deep · 97 km away
  3. 5.776 km NE of Hihifo, Tonga · 3259 days ago · 10 km deep · 91 km away
  4. 4.6106 km ENE of Hihifo, Tonga · 3259 days ago · 10 km deep · 55 km away
  5. 4.683 km NE of Hihifo, Tonga · 3259 days ago · 10 km deep · 85 km away
  6. 4.4109 km NE of Hihifo, Tonga · 3258 days ago · 10 km deep · 60 km away
  7. 5.073 km ENE of Hihifo, Tonga · 3258 days ago · 10 km deep · 90 km away
  8. 5.0105 km NE of Hihifo, Tonga · 3258 days ago · 10 km deep · 66 km away
  9. 6.897 km NE of Hihifo, Tonga · 3255 days ago · 10 km deep · 77 km away · felt by 35 · tsunami flag
  10. 4.2135 km NE of Hihifo, Tonga · 3255 days ago · 10 km deep · 61 km away
  11. 5.1145 km NE of Hihifo, Tonga · 3255 days ago · 10 km deep · 51 km away
  12. 4.2119 km NNE of Hihifo, Tonga · 3255 days ago · 10 km deep · 91 km away
  13. 5.0118 km NNE of Hihifo, Tonga · 3254 days ago · 10 km deep · 92 km away
  14. 4.6124 km NNE of Hihifo, Tonga · 3254 days ago · 10 km deep · 87 km away
  15. 4.6117 km NE of Hihifo, Tonga · 3254 days ago · 10 km deep · 72 km away
  16. 4.682 km NE of Hihifo, Tonga · 3253 days ago · 10 km deep · 91 km away
  17. 5.487 km ENE of Hihifo, Tonga · 3253 days ago · 10 km deep · 75 km away · felt by 1

Before

  1. 4.5122 km E of Hihifo, Tonga · 3323 days ago · 10 km deep · 61 km away
  2. 5.3151 km SW of Vailoatai, American Samoa · 3329 days ago · 10 km deep · 97 km away · felt by 3
  3. 4.5114 km NE of Hihifo, Tonga · 3332 days ago · 10 km deep · 71 km away
  4. 4.679 km NE of Hihifo, Tonga · 3336 days ago · 10 km deep · 89 km away
  5. 5.7137 km SW of Gataivai, Samoa · 3336 days ago · 8 km deep · 89 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000ai4f. Read Sat, Oct 3, 2026, 1:07 AM UTC.