4.0

M4.0 Earthquake 52 km E of Saint Croix, U.S. Virgin Islands — November 27, 2020

2020-11-27 18:35:09 UTC (2020-11-27) · approx. 2:35 PM UTC-4 local

MagnitudeM4.0(md)
Time18:35 UTC≈ 2:35 PM UTC-4
Depth5.0 kmshallow crustal
Coordinates17.639°, -64.262°
Felt by2DYFI responses
Status✓ Reviewed by USGS

On November 27, 2020 at 18:35 UTC, a magnitude 4.0 shallow crustal earthquake struck 52 km E of Saint Croix, U.S. Virgin Islands, at a depth of 5.0 km and coordinates 17.6388°, -64.2616°.

Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 13 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 325 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 17.64°, -64.26°

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.

USGS DYFI community-reported intensity map for the M4.0 earthquake near 52 km E of Saint Croix, U.S. Virgin Islands

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

Earthquake Details

Magnitude
4.0 md
Depth
5.0 km
shallow crustal
Location
17.6388°N
-64.2616°E
Felt Reports
2
DYFI responses
Community Intensity
2.0
CDI from reports

Technical Information

Event ID
pr2020332017
Event Type
earthquake
Status
✓ Reviewed
Significance
242
Stations Used
16
Azimuthal Gap
346.0°
Min Station Distance
1.665°
RMS Residual
0.43 sec
Last Updated
2021-02-06 18:28:40 UTC

Common Questions

How strong was the magnitude 4.0 earthquake near Saint Croix, U.S. Virgin Islands?

The magnitude 4.0 earthquake that struck 52 km E of Saint Croix, U.S. Virgin Islands on November 27, 2020 at 18:35 UTC had a depth of 5.0 km. For context, this was a minor earthquake typically detected only by instruments.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.0 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.0 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: pr2020332017). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, November 27, 2020). M4.0 Earthquake 52 km E of Saint Croix, U.S. Virgin Islands — November 27, 2020. Retrieved February 6, 2021 from https://www.earthquaketracker.org/earthquakes/event/pr2020332017/