M4.3 Earthquake 48 km ENE of Noda, Japan — July 30, 2026
2026-07-30 16:20:48 UTC (5 hours ago) · approx. 1:20 AM UTC+9 local
On July 30, 2026 at 16:20 UTC, a magnitude 4.3 shallow crustal earthquake struck 48 km ENE of Noda, Japan, at a depth of 51.3 km and coordinates 40.2239°, 142.3617°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 6.0 mainshock that occurred 29 days ago 54 km ENE of Noda, Japan. Since the mainshock, the USGS has recorded 4 aftershocks in this area. Aftershock activity is expected to continue for weeks to months as stresses on surrounding faults redistribute.
Earthquake Details
142.3617°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Noda, Japan?
The magnitude 4.3 earthquake that struck 48 km ENE of Noda, Japan on July 30, 2026 at 16:20 UTC had a depth of 51.3 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 4.3 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M6.0 one earlier?
No. This magnitude 4.3 earthquake is an aftershock of the larger magnitude 6.0 mainshock that occurred earlier 54 km ENE of Noda, Japan. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000th0s). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 30, 2026). M4.3 Earthquake 48 km ENE of Noda, Japan — July 30, 2026. Retrieved July 30, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000th0s/