M4.7 Earthquake 8 km SE of Samamea, Samoa — May 9, 2024
2024-05-09 01:38:24 UTC (2024-05-09) · approx. 2:38 PM UTC-11 local
Felt by 2 people across nearby locations.
On May 9, 2024 at 01:38 UTC, a magnitude 4.7 shallow crustal earthquake struck 8 km SE of Samamea, Samoa, at a depth of 10.0 km and coordinates -13.9821°, -171.4711°. This earthquake was detected by 20 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 341, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 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 2 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
-171.4711°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.7 earthquake near Samamea, Samoa?
The magnitude 4.7 earthquake that struck 8 km SE of Samamea, Samoa on May 9, 2024 at 01:38 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 -13.9821°, -171.4711°, which is 8 km SE of Samamea, Samoa.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Authoritative source: USGS event page (event ID: us6000myys). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, May 9, 2024). M4.7 Earthquake 8 km SE of Samamea, Samoa — May 9, 2024. Retrieved July 20, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000myys/