4.7

M4.7 Earthquake near Reykjanes Ridge — October 22, 2020

2020-10-22 12:00:48 UTC (2020-10-22) · approx. 10:00 AM UTC-2 local

MagnitudeM4.7(mb)
Time12:00 UTC≈ 10:00 AM UTC-2
Depth10.0 kmshallow crustal
Coordinates52.685°, -35.080°
Felt byNo felt reports
Status✓ Reviewed by USGS

On October 22, 2020 at 12:00 UTC, a magnitude 4.7 shallow crustal earthquake struck near Reykjanes Ridge, at a depth of 10.0 km and coordinates 52.6847°, -35.0802°.

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.

Map showing earthquake epicenter at 52.68°, -35.08°

Earthquake Details

Magnitude
4.7 mb
Depth
10.0 km
shallow crustal
Location
52.6847°N
-35.0802°E

Technical Information

Event ID
us6000cbar
Event Type
earthquake
Status
✓ Reviewed
Significance
340
Azimuthal Gap
79.0°
Min Station Distance
11.115°
RMS Residual
1.04 sec
Last Updated
2021-01-09 20:05:18 UTC

Common Questions

How strong was the magnitude 4.7 earthquake near Reykjanes Ridge?

The magnitude 4.7 earthquake that struck near Reykjanes Ridge on October 22, 2020 at 12:00 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 52.6847°, -35.0802°, which is near Reykjanes Ridge.

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.

Authoritative source: USGS event page (event ID: us6000cbar). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, October 22, 2020). M4.7 Earthquake near Reykjanes Ridge — October 22, 2020. Retrieved January 9, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000cbar/