M4.1 earthquake 3 km N of Mobara, Japan
A magnitude 4.1 earthquake struck 3 km N of Mobara, Japan on Sat, Aug 8, 2026, 4:55 PM JST (07:55 UTC), 60 km (37 mi) below the surface.
A larger quake followed: M5.8 3 km E of Fujishiro, 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 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2026-08-08 07:55:20 UTC
- Depth
- 59.8 km (37.2 mi), shallow
- Epicenter
- 35.456° N, 140.294° 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 4.2 km horizontally, 9.4 km in depth
- Magnitude uncertainty
- ±0.17
- Depth from
- From location
- Station coverage gap
- 139°
- Stations used
- 23
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 since this one and 4 in the 30 days before it.
After
- 4.61 km WSW of Inzai, Japan · 53 days ago · 77 km deep · 43 km away
- 5.83 km E of Fujishiro, Japan · 40 days ago · 61 km deep · 53 km away · felt by 156
- 4.77 km ENE of Hasaki, Japan · 33 days ago · 35 km deep · 65 km away · felt by 12
- 4.81 km SE of Ishige, Japan · 15 days ago · 80 km deep · 78 km away · felt by 73
- 4.31 km SSW of Kōzaki, Japan · 4 days ago · 76 km deep · 49 km away
- 4.92 km SW of Sakai, Japan · 3 days ago · 71 km deep · 84 km away · felt by 69
- 4.412 km SSE of Hasaki, Japan · 12 hr ago · 35 km deep · 56 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000tk8u. Read Thu, Oct 1, 2026, 9:35 AM UTC.