M4.8 earthquake 1 km SE of Ishige, Japan
A magnitude 4.8 earthquake struck 1 km SE of Ishige, Japan on Thu, Sep 17, 2026, 12:07 AM JST (15:07 UTC), 80 km (50 mi) below the surface.
A larger quake followed: M5.3 0 km NNE of Yōkaichiba, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.8 (Mww, W-phase moment), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2026-09-16 15:07:38 UTC
- Depth
- 79.9 km (49.7 mi), intermediate-depth
- Epicenter
- 36.109° N, 139.978° E
- Region
- Japan
- Felt reports
- 73
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 4.8 | Mww, W-phase moment | USGS National Earthquake Information Center | Preferred · Confirmed · ±0.098 · 10 stations |
| 4.7 | Mwr, regional moment | USGS National Earthquake Information Center | Moment tensor · Confirmed |
Did you feel it?
73 people reported to the USGS what they felt; the strongest reported shaking was IV, light shaking. If you felt it, tell the USGS: every report sharpens the shaking map.
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
- 4.7 Mwr
- Nodal plane 1
- Strike 72°, dip 70°, rake -172°
- Nodal plane 2
- Strike 339°, dip 82°, rake -20°
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 5.8 km horizontally, 3.7 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 97°
- Stations used
- 165
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 5 since this one and 4 in the 30 days before it.
After
- 4.31 km SSW of Kōzaki, Japan · 6 days ago · 76 km deep · 45 km away
- 4.92 km SW of Sakai, Japan · 4 days ago · 71 km deep · 18 km away · felt by 69
- 4.412 km SSE of Hasaki, Japan · 2 days ago · 35 km deep · 97 km away
- 5.30 km NNE of Yōkaichiba, Japan · 33 hr ago · 42 km deep · 69 km away · felt by 25
- 4.52 km NE of Satte, Japan · 24 hr ago · 65 km deep · 21 km away
Before
- 4.77 km ENE of Hasaki, Japan · 34 days ago · 35 km deep · 92 km away · felt by 12
- 4.26 km N of Ashikaga, Japan · 38 days ago · 78 km deep · 58 km away
- 5.83 km E of Fujishiro, Japan · 41 days ago · 61 km deep · 26 km away · felt by 156
- 4.318 km E of Funaishikawa, Japan · 44 days ago · 50 km deep · 81 km away · felt by 1
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000thv6. Read Fri, Oct 2, 2026, 9:28 PM UTC.