M4.4 Earthquake 26 km SW of Date, Japan — April 15, 2021
2021-04-15 20:47:55 UTC (2021-04-15) · approx. 5:47 AM UTC+9 local
On April 15, 2021 at 20:47 UTC, a magnitude 4.4 shallow crustal earthquake struck 26 km SW of Date, Japan, at a depth of 42.8 km and coordinates 42.3226°, 140.6145°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
140.6145°E
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Common Questions
How strong was the magnitude 4.4 earthquake near Date, Japan?
The magnitude 4.4 earthquake that struck 26 km SW of Date, Japan on April 15, 2021 at 20:47 UTC had a depth of 42.8 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000e1xl). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, April 15, 2021). M4.4 Earthquake 26 km SW of Date, Japan — April 15, 2021. Retrieved June 19, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000e1xl/