M4.8 Earthquake 20 km NNE of Katashina, Japan — January 22, 2025
2025-01-22 17:49:29 UTC (2025-01-22) · approx. 2:49 AM UTC+9 local
Felt by 15 people across nearby locations.
On January 22, 2025 at 17:49 UTC, a magnitude 4.8 shallow crustal earthquake struck 20 km NNE of Katashina, Japan, at a depth of 10.0 km and coordinates 37.0225°, 139.3110°. This earthquake was detected by 122 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 360, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Japan, a region characterized by the intersection of four tectonic plates — Pacific, Philippine Sea, Eurasian, and North American — creating multiple subduction zones. The nearest mapped fault system is the Japan Trench. View all earthquakes in Japan.
Learn more: Magnitude scale · Aftershock sequences
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 15 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
139.3110°E
Technical Information
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Common Questions
How strong was the magnitude 4.8 earthquake near Katashina, Japan?
The magnitude 4.8 earthquake that struck 20 km NNE of Katashina, Japan on January 22, 2025 at 17:49 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 37.0225°, 139.3110°, which is 20 km NNE of Katashina, Japan. View all earthquakes in Japan.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
Has Japan had earthquakes this big before?
The largest recorded earthquake in Japan was the M9.1 Tohoku earthquake of March 11, 2011. Today's magnitude 4.8 event is significantly smaller than that historical record.
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Location
Authoritative source: USGS event page (event ID: us6000plms). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, January 22, 2025). M4.8 Earthquake 20 km NNE of Katashina, Japan — January 22, 2025. Retrieved September 14, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000plms/