Japan earthquakes

M3.8 earthquake 21 km NE of Hasaki, Japan

A magnitude 3.8 earthquake struck 21 km NE of Hasaki, Japan on Mon, Feb 27, 2017, 8:26 AM JST (23:26 UTC), 33 km (20 mi) below the surface.

A larger quake followed: M4.8 8 km SSE of Hasaki, Japan. This one was a foreshock.

Choshi 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
3.8 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2017-02-26 23:26:39 UTC
Depth
32.8 km (20.4 mi), shallow
Epicenter
35.854° N, 141.020° E
Region
Japan
Felt reports
3
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

3 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 4.5 km horizontally, 7.3 km in depth
Magnitude uncertainty
±0.21
Depth from
From location
Station coverage gap
139°
Stations used
22

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 4.234 km E of ?arai, Japan · 3505 days ago · 59 km deep · 49 km away · felt by 1
  2. 4.88 km SSE of Hasaki, Japan · 3501 days ago · 44 km deep · 26 km away · felt by 33
  3. 4.132 km ESE of Hasaki, Japan · 3501 days ago · 33 km deep · 26 km away · felt by 1
  4. 4.38 km E of Omigawa, Japan · 3490 days ago · 61 km deep · 28 km away · felt by 6
  5. 4.429 km NE of Hasaki, Japan · 3490 days ago · 50 km deep · 9 km away
  6. 4.57 km WNW of Itako, Japan · 3488 days ago · 56 km deep · 51 km away · felt by 5
  7. 4.53 km SSE of Sakura, Japan · 3486 days ago · 60 km deep · 72 km away
  8. 4.314 km S of Asahi, Japan · 3483 days ago · 59 km deep · 44 km away · felt by 9
  9. 4.126 km ESE of Kitaibaraki, Japan · 3483 days ago · 47 km deep · 92 km away · felt by 2
  10. 4.34 km NNW of Mitsukaid?, Japan · 3482 days ago · 55 km deep · 98 km away · felt by 15
  11. 4.87 km WSW of Ishioka, Japan · 3463 days ago · 63 km deep · 83 km away · felt by 81
  12. 4.45 km ESE of Chiba, Japan · 3460 days ago · 66 km deep · 83 km away · felt by 26

Before

  1. 4.343 km ESE of Hitachi, Japan · 3508 days ago · 36 km deep · 64 km away · felt by 2
  2. 4.36 km NE of Mitsukaid?, Japan · 3509 days ago · 55 km deep · 93 km away · felt by 2
  3. 5.410 km SW of Hasaki, Japan · 3514 days ago · 42 km deep · 32 km away · felt by 127
  4. 4.45 km NW of Sakura, Japan · 3515 days ago · 67 km deep · 76 km away · felt by 8
  5. 4.251 km ESE of Hitachi, Japan · 3525 days ago · 41 km deep · 69 km away · felt by 7
  6. 4.423 km NNE of Kashima-shi, Japan · 3527 days ago · 47 km deep · 40 km away · felt by 3
  7. 4.3107 km ESE of Takahagi, Japan · 3528 days ago · 39 km deep · 94 km away
  8. 4.3near the east coast of Honshu, Japan · 3530 days ago · 37 km deep · 46 km away · felt by 2
  9. 4.511 km N of ?hara, Japan · 3531 days ago · 59 km deep · 79 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us20008mkp. Read Sun, Oct 4, 2026, 4:38 PM UTC.