M4.9 Earthquake 57 km SE of Inarajan Village, Guam — September 5, 2021
2021-09-05 03:08:44 UTC (2021-09-05) · approx. 1:08 PM UTC+10 local
Felt by 1 person across nearby locations.
On September 5, 2021 at 03:08 UTC, a magnitude 4.9 shallow crustal earthquake struck 57 km SE of Inarajan Village, Guam, at a depth of 10.0 km and coordinates 12.8524°, 145.0540°.
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 1 citizen response 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
145.0540°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.9 earthquake near Inarajan Village, Guam?
The magnitude 4.9 earthquake that struck 57 km SE of Inarajan Village, Guam on September 5, 2021 at 03:08 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 12.8524°, 145.0540°, which is 57 km SE of Inarajan Village, Guam.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000f83q). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, September 5, 2021). M4.9 Earthquake 57 km SE of Inarajan Village, Guam — September 5, 2021. Retrieved November 17, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000f83q/