M3.8 earthquake 29 km ESE of Kushiro, Japan
A magnitude 3.8 earthquake struck 29 km ESE of Kushiro, Japan on Fri, Sep 28, 1973, 1:40 PM JST (04:40 UTC), 103 km (64 mi) below the surface.
A larger quake followed: M5.0 52 km SSW of Nemuro, Japan. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.8 (mb), minor
- Local time
- UTC
- 1973-09-28 04:40:37 UTC
- Depth
- 103.0 km (64.0 mi), intermediate-depth
- Epicenter
- 42.905° N, 144.723° 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.
- Stations used
- 6
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.052 km SSW of Nemuro, Japan · 19348 days ago · 52 km deep · 47 km away
- 4.891 km SSE of Nemuro, Japan · 19341 days ago · 33 km deep · 98 km away
- 5.160 km SSW of Nemuro, Japan · 19319 days ago · 54 km deep · 49 km away
- 4.135 km WSW of Kushiro, Japan · 19313 days ago · 96 km deep · 60 km away
- 4.722 km WNW of Nemuro, Japan · 19312 days ago · 76 km deep · 75 km away
Before
Earthquakes todayJapan earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00003kd. Read Tue, Sep 22, 2026, 12:12 PM UTC.