5.3

M5.3 Earthquake 67 km ESE of Cruz Bay, U.S. Virgin Islands — October 7, 2020

2020-10-07 18:24:34 UTC (2020-10-07) · approx. 2:24 PM UTC-4 local

Felt by 254 people across surrounding communities.

MagnitudeM5.3(ml)
Time18:24 UTC≈ 2:24 PM UTC-4
Depth10.0 kmshallow crustal
Coordinates18.174°, -64.178°
Felt by254DYFI responses
Status✓ Reviewed by USGS

On October 7, 2020 at 18:24 UTC, a magnitude 5.3 shallow crustal earthquake struck 67 km ESE of Cruz Bay, U.S. Virgin Islands, at a depth of 10.0 km and coordinates 18.1740°, -64.1781°. This earthquake was detected by 30 seismic stations with moderate location accuracy and was assigned a USGS significance rating of 567, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 5.3 releases seismic energy equivalent to roughly 1 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.7 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 18.17°, -64.18°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 254 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M5.3 earthquake near 67 km ESE of Cruz Bay, U.S. Virgin Islands

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
5.3 ml
Depth
10.0 km
shallow crustal
Location
18.1740°N
-64.1781°E
Felt Reports
254
DYFI responses
Community Intensity
5.3
CDI from reports

Technical Information

Event ID
pr2020281016
Event Type
earthquake
Status
✓ Reviewed
Significance
567
Stations Used
30
Azimuthal Gap
197.0°
Min Station Distance
1.671°
RMS Residual
0.57 sec
Last Updated
2025-12-22 18:43:27 UTC

Common Questions

How strong was the magnitude 5.3 earthquake near Cruz Bay, U.S. Virgin Islands?

The magnitude 5.3 earthquake that struck 67 km ESE of Cruz Bay, U.S. Virgin Islands on October 7, 2020 at 18:24 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.

Where did the earthquake occur?

The earthquake epicenter was located at 18.1740°, -64.1781°, which is 67 km ESE of Cruz Bay, U.S. Virgin Islands.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.3 earthquakes can continue for days to weeks and gradually diminish over time.

Authoritative source: USGS event page (event ID: pr2020281016). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, October 7, 2020). M5.3 Earthquake 67 km ESE of Cruz Bay, U.S. Virgin Islands — October 7, 2020. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/pr2020281016/