4.4

M4.4 Earthquake near Reykjanes RidgeMay 21, 2026

2026-05-21 19:53:29 UTC (2026-05-21) · approx. 5:53 PM UTC-2 local

MagnitudeM4.4(mb)
Time19:53 UTC5:53 PM UTC-2
Depth10.0 kmshallow crustal
Coordinates57.539°, -32.585°
Felt byNo felt reports
Status✓ Reviewed by USGS

On May 21, 2026 at 19:53 UTC, a magnitude 4.4 shallow crustal earthquake struck near Reykjanes Ridge, at a depth of 10.0 km and coordinates 57.5394°, -32.5850°.

Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 57.54°, -32.59°

Earthquake Details

Magnitude
4.4 mb
Depth
10.0 km
shallow crustal
Location
57.5394°N
-32.5850°E

Technical Information

Event ID
us7000sp3h
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Stations Used
44
Azimuthal Gap
159.0°
Min Station Distance
9.036°
RMS Residual
0.53 sec
Last Updated
2026-06-03 16:16:16 UTC

Common Questions

How strong was the magnitude 4.4 earthquake near Reykjanes Ridge?

The magnitude 4.4 earthquake that struck near Reykjanes Ridge on May 21, 2026 at 19:53 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.4 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.4 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000sp3h). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, May 21, 2026). M4.4 Earthquake near Reykjanes RidgeMay 21, 2026. Retrieved June 3, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000sp3h/