Japan earthquakes

M4.8 earthquake 111 km E of Iwaki, Japan

A magnitude 4.8 earthquake struck 111 km E of Iwaki, Japan on Tue, Feb 28, 2017, 5:08 PM JST (08:08 UTC), 24 km (15 mi) below the surface.

A larger quake followed: M5.3 45 km E of Namie, Japan. This one was a foreshock.

Iwaki forecastMore in Japan

Map

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

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The earthquake

Magnitude
4.8 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2017-02-28 08:08:27 UTC
Depth
24.0 km (14.9 mi), shallow
Epicenter
36.937° N, 142.130° E
Region
Japan
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 8.3 km horizontally, 6.2 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
143°
Stations used
40

Nearest places

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

Nearby

Within 100 km, magnitude 1.8 and up: 11 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 5.037 km ENE of Namie, Japan · 3504 days ago · 54 km deep · 95 km away · felt by 12
  2. 4.136 km E of Namie, Japan · 3501 days ago · 46 km deep · 86 km away
  3. 4.640 km SE of Namie, Japan · 3500 days ago · 14 km deep · 77 km away · felt by 2
  4. 5.345 km E of Namie, Japan · 3494 days ago · 44 km deep · 86 km away · felt by 49
  5. 4.345 km SE of Namie, Japan · 3493 days ago · 35 km deep · 73 km away
  6. 4.649 km E of Namie, Japan · 3484 days ago · 14 km deep · 73 km away · felt by 1
  7. 4.6140 km ESE of Kitaibaraki, Japan · 3482 days ago · 32 km deep · 63 km away · felt by 20
  8. 4.8157 km ENE of Hasaki, Japan · 3481 days ago · 10 km deep · 91 km away
  9. 4.850 km E of Namie, Japan · 3466 days ago · 43 km deep · 85 km away · felt by 8
  10. 5.073 km ESE of Namie, Japan · 3455 days ago · 38 km deep · 51 km away · felt by 19
  11. 4.433 km ENE of Iwaki, Japan · 3451 days ago · 39 km deep · 87 km away · felt by 1

Before

  1. 5.730 km ENE of Namie, Japan · 3505 days ago · 47 km deep · 99 km away · felt by 100
  2. 4.2near the east coast of Honshu, Japan · 3506 days ago · 19 km deep · 66 km away
  3. 4.827 km ENE of Iwaki, Japan · 3507 days ago · 48 km deep · 89 km away · felt by 34
  4. 4.632 km SSE of Namie, Japan · 3507 days ago · 61 km deep · 89 km away · felt by 1
  5. 4.183 km ENE of Namie, Japan · 3514 days ago · 57 km deep · 91 km away
  6. 4.143 km ENE of Iwaki, Japan · 3523 days ago · 10 km deep · 72 km away
  7. 5.266 km ESE of Namie, Japan · 3523 days ago · 7 km deep · 53 km away · felt by 23
  8. 4.251 km ESE of Hitachi, Japan · 3524 days ago · 41 km deep · 98 km away · felt by 7
  9. 4.543 km ESE of Namie, Japan · 3526 days ago · 23 km deep · 74 km away
  10. 4.461 km E of Namie, Japan · 3527 days ago · 47 km deep · 81 km away
  11. 4.3107 km ESE of Takahagi, Japan · 3528 days ago · 39 km deep · 67 km away
  12. 4.830 km ESE of Namie, Japan · 3530 days ago · 25 km deep · 87 km away · felt by 1

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us20008mw7. Read Sun, Oct 4, 2026, 1:28 PM UTC.