4.5

M4.5 Earthquake near Reykjanes Ridge — April 2, 2021

2021-04-02 23:09:18 UTC (2021-04-02) · approx. 9:09 PM UTC-2 local

MagnitudeM4.5(mb)
Time23:09 UTC≈ 9:09 PM UTC-2
Depth10.0 kmshallow crustal
Coordinates59.453°, -30.543°
Felt byNo felt reports
Status✓ Reviewed by USGS

On April 2, 2021 at 23:09 UTC, a magnitude 4.5 shallow crustal earthquake struck near Reykjanes Ridge, at a depth of 10.0 km and coordinates 59.4529°, -30.5427°.

Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 59.45°, -30.54°

Earthquake Details

Magnitude
4.5 mb
Depth
10.0 km
shallow crustal
Location
59.4529°N
-30.5427°E

Technical Information

Event ID
us6000e0bv
Event Type
earthquake
Status
✓ Reviewed
Significance
312
Azimuthal Gap
101.0°
Min Station Distance
6.844°
RMS Residual
0.51 sec
Last Updated
2021-06-12 21:36:42 UTC

Common Questions

How strong was the magnitude 4.5 earthquake near Reykjanes Ridge?

The magnitude 4.5 earthquake that struck near Reykjanes Ridge on April 2, 2021 at 23:09 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 59.4529°, -30.5427°, which is near Reykjanes Ridge.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us6000e0bv). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, April 2, 2021). M4.5 Earthquake near Reykjanes Ridge — April 2, 2021. Retrieved June 12, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000e0bv/