M5.7 Earthquake 74 km NE of Cruz Bay, U.S. Virgin Islands — December 9, 2023
2023-12-09 14:27:22 UTC (2023-12-09) · approx. 10:27 AM UTC-4 local
Felt by 172 people across surrounding communities.
On December 9, 2023 at 14:27 UTC, a magnitude 5.7 shallow crustal earthquake struck 74 km NE of Cruz Bay, U.S. Virgin Islands, at a depth of 7.0 km and coordinates 18.8785°, -64.3833°. This earthquake was detected by 26 seismic stations with moderate location accuracy and was assigned a USGS significance rating of 591, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.7 releases seismic energy equivalent to roughly 5 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 5.2 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 172 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
-64.3833°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.7 earthquake near Cruz Bay, U.S. Virgin Islands?
The magnitude 5.7 earthquake that struck 74 km NE of Cruz Bay, U.S. Virgin Islands on December 9, 2023 at 14:27 UTC had a depth of 7.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 18.8785°, -64.3833°, which is 74 km NE of Cruz Bay, U.S. Virgin Islands.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.7 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: pr2023343002). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, December 9, 2023). M5.7 Earthquake 74 km NE of Cruz Bay, U.S. Virgin Islands — December 9, 2023. Retrieved February 10, 2024 from https://www.earthquaketracker.org/earthquakes/event/pr2023343002/