4.6

M4.6 Earthquake in the Pagan region, Northern Mariana Islands — April 24, 2021

2021-04-24 22:10:05 UTC (2021-04-24) · approx. 8:10 AM UTC+10 local

MagnitudeM4.6(mb)
Time22:10 UTC≈ 8:10 AM UTC+10
Depth116.6 kmintermediate depth
Coordinates18.409°, 145.793°
Felt byNo felt reports
Status✓ Reviewed by USGS

On April 24, 2021 at 22:10 UTC, a magnitude 4.6 intermediate depth earthquake struck in the Pagan region, Northern Mariana Islands, at a depth of 116.6 km and coordinates 18.4086°, 145.7926°.

Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 18.41°, 145.79°

Earthquake Details

Magnitude
4.6 mb
Depth
116.6 km
intermediate depth
Location
18.4086°N
145.7926°E

Technical Information

Event ID
us7000dylp
Event Type
earthquake
Status
✓ Reviewed
Significance
326
Azimuthal Gap
96.0°
Min Station Distance
3.165°
RMS Residual
1.02 sec
Last Updated
2021-07-07 18:34:40 UTC

Common Questions

How strong was the magnitude 4.6 earthquake in the Pagan region, Northern Mariana Islands?

The magnitude 4.6 earthquake that struck in the Pagan region, Northern Mariana Islands on April 24, 2021 at 22:10 UTC had a depth of 116.6 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 18.4086°, 145.7926°, which is in the Pagan region, Northern Mariana Islands.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000dylp). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, April 24, 2021). M4.6 Earthquake in the Pagan region, Northern Mariana Islands — April 24, 2021. Retrieved July 7, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000dylp/