M4.0 earthquake 22 km NE of Hasaki, Japan
A magnitude 4.0 earthquake struck 22 km NE of Hasaki, Japan on Thu, Dec 15, 2016, 2:27 PM JST (05:27 UTC), 37 km (23 mi) below the surface.
A larger quake followed: M5.0 9 km SW of Hasaki, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.0 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2016-12-15 05:27:37 UTC
- Depth
- 36.9 km (23.0 mi), shallow
- Epicenter
- 35.865° N, 141.018° E
- Region
- Japan
- Felt reports
- 1
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
Felt at Tsuchiura. Recorded (2 JMA) in Chiba and Ibaraki.
From the USGS event page for us20008151. U.S. Geological Survey text and figures are in the public domain.
Did you feel it?
1 person reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 5.6 km horizontally, 10.8 km in depth
- Magnitude uncertainty
- ±0.23
- Depth from
- From location
- Station coverage gap
- 173°
- Stations used
- 15
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.4near the east coast of Honshu, Japan · 3577 days ago · 58 km deep · 84 km away
- 4.74 km NNW of ?ami, Japan · 3572 days ago · 79 km deep · 73 km away
- 4.75 km SW of Mitsukaid?, Japan · 3571 days ago · 54 km deep · 98 km away · felt by 24
- 4.663 km ESE of Hitachi, Japan · 3569 days ago · 33 km deep · 67 km away
- 4.58 km SSE of Tsukuba, Japan · 3553 days ago · 78 km deep · 85 km away · felt by 7
- 5.09 km SW of Hasaki, Japan · 3552 days ago · 49 km deep · 32 km away · felt by 32
- 4.14 km ENE of Ishige, Japan · 3547 days ago · 49 km deep · 95 km away · felt by 1
- 4.57 km E of Funaishikawa, Japan · 3547 days ago · 59 km deep · 76 km away · felt by 35
- 4.669 km SSE of Hasaki, Japan · 3539 days ago · 36 km deep · 77 km away
- 4.511 km N of ?hara, Japan · 3532 days ago · 59 km deep · 80 km away
- 4.3near the east coast of Honshu, Japan · 3531 days ago · 37 km deep · 45 km away · felt by 2
- 4.3107 km ESE of Takahagi, Japan · 3528 days ago · 39 km deep · 94 km away
- 4.423 km NNE of Kashima-shi, Japan · 3528 days ago · 47 km deep · 39 km away · felt by 3
- 4.251 km ESE of Hitachi, Japan · 3525 days ago · 41 km deep · 68 km away · felt by 7
Before
- 4.72 km SSW of Chiba, Japan · 3593 days ago · 73 km deep · 88 km away · felt by 12
- 5.023 km NNE of Hasaki, Japan · 3605 days ago · 19 km deep · 7 km away · felt by 27
- 4.123 km ENE of Hasaki, Japan · 3606 days ago · 43 km deep · 5 km away
- 4.24 km E of Chiba, Japan · 3610 days ago · 63 km deep · 83 km away · felt by 30
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us20008151. Read Mon, Oct 5, 2026, 7:38 AM UTC.