M4.1 earthquake 9 km NNE of Sakai, Japan
A magnitude 4.1 earthquake struck 9 km NNE of Sakai, Japan on Sun, Feb 26, 2017, 5:11 AM JST (20:11 UTC), 56 km (35 mi) below the surface.
A larger quake followed: M4.8 7 km WSW of Ishioka, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (Mwr, regional moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-02-25 20:11:44 UTC
- Depth
- 56.0 km (34.8 mi), shallow
- Epicenter
- 36.179° N, 139.825° E
- Region
- Japan
- Felt reports
- 19
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
19 people reported to the USGS what they felt; the strongest reported shaking was III, weak shaking.
Fault motion and ground failure
How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.
- Faulting
- Strike-slip
- Moment magnitude
- 4.1 Mwr
- Nodal plane 1
- Strike 226°, dip 29°, rake 153°
- Nodal plane 2
- Strike 340°, dip 77°, rake 63°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 5.5 km horizontally, 5.6 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 133°
- Stations used
- 70
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.38 km E of Omigawa, Japan · 3490 days ago · 61 km deep · 88 km away · felt by 6
- 4.57 km WNW of Itako, Japan · 3488 days ago · 56 km deep · 63 km away · felt by 5
- 4.53 km SSE of Sakura, Japan · 3486 days ago · 60 km deep · 67 km away
- 4.34 km NNW of Mitsukaid?, Japan · 3482 days ago · 55 km deep · 18 km away · felt by 15
- 4.419 km N of Daigo, Japan · 3478 days ago · 57 km deep · 97 km away
- 4.012 km W of Kitaibaraki, Japan · 3473 days ago · 35 km deep · 98 km away · felt by 5
- 4.87 km WSW of Ishioka, Japan · 3463 days ago · 63 km deep · 32 km away · felt by 81
- 4.45 km ESE of Chiba, Japan · 3460 days ago · 66 km deep · 74 km away · felt by 26
- 4.48 km SSE of Tokyo, Japan · 3458 days ago · 119 km deep · 63 km away
- 4.610 km NW of Takahagi, Japan · 3455 days ago · 24 km deep · 99 km away · felt by 8
- 4.44 km NW of Takahagi, Japan · 3455 days ago · 10 km deep · 99 km away · felt by 6
Before
- 4.36 km NE of Mitsukaid?, Japan · 3509 days ago · 55 km deep · 22 km away · felt by 2
- 4.45 km NW of Sakura, Japan · 3515 days ago · 67 km deep · 58 km away · felt by 8
- 4.613 km WNW of Takahagi, Japan · 3526 days ago · 36 km deep · 93 km away · felt by 6
- 4.423 km NNE of Kashima-shi, Japan · 3527 days ago · 47 km deep · 86 km away · felt by 3
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us20008mfp. Read Sun, Oct 4, 2026, 2:38 PM UTC.