Samoa earthquakes

M4.9 earthquake 155 km SSW of Lotofag?, Samoa

A magnitude 4.9 earthquake struck 155 km SSW of Lotofag?, Samoa on Sat, Oct 19, 2019, 12:54 AM GMT+14 (10:54 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.9 121 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
4.9 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-10-18 10:54:12 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
15.308° S, 172.327° 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 8.4 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.09
Depth from
Operator assigned
Station coverage gap
107°
Stations used
30

Nearest places

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

Nearby

Within 100 km, magnitude 1.9 and up: 11 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 5.9121 km NE of Hihifo, Tonga · 2537 days ago · 29 km deep · 75 km away · felt by 4
  2. 4.5109 km NE of Hihifo, Tonga · 2537 days ago · 10 km deep · 72 km away
  3. 4.9143 km NE of Hihifo, Tonga · 2537 days ago · 10 km deep · 62 km away
  4. 4.3109 km NE of Hihifo, Tonga · 2534 days ago · 10 km deep · 70 km away
  5. 5.3185 km S of Matavai, Samoa · 2533 days ago · 10 km deep · 65 km away · felt by 1
  6. 5.8103 km E of Hihifo, Tonga · 2520 days ago · 43 km deep · 77 km away · felt by 11
  7. 5.280 km ENE of Hihifo, Tonga · 2519 days ago · 10 km deep · 93 km away
  8. 4.693 km NE of Hihifo, Tonga · 2516 days ago · 10 km deep · 99 km away
  9. 4.4135 km SSW of Gataivai, Samoa · 2508 days ago · 10 km deep · 59 km away
  10. 4.3141 km E of Hihifo, Tonga · 2498 days ago · 10 km deep · 74 km away
  11. 4.9116 km NE of Hihifo, Tonga · 2481 days ago · 10 km deep · 77 km away

Before

  1. 5.2126 km NE of Hihifo, Tonga · 2549 days ago · 10 km deep · 53 km away
  2. 4.7116 km NE of Hihifo, Tonga · 2555 days ago · 10 km deep · 67 km away
  3. 5.690 km ENE of Hihifo, Tonga · 2567 days ago · 10 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70005vei. Read Fri, Oct 2, 2026, 2:04 AM UTC.