4.9

M4.9 Earthquake 115 km S of Merizo Village, GuamMarch 21, 2022

2022-03-21 14:56:01 UTC (2022-03-21) · approx. 12:56 AM UTC+10 local

MagnitudeM4.9(mb)
Time14:56 UTC12:56 AM UTC+10
Depth10.0 kmshallow crustal
Coordinates12.242°, 144.471°
Felt byNo felt reports
Status✓ Reviewed by USGS

On March 21, 2022 at 14:56 UTC, a magnitude 4.9 shallow crustal earthquake struck 115 km S of Merizo Village, Guam, at a depth of 10.0 km and coordinates 12.2415°, 144.4707°.

Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 12.24°, 144.47°

Earthquake Details

Magnitude
4.9 mb
Depth
10.0 km
shallow crustal
Location
12.2415°N
144.4707°E

Technical Information

Event ID
us6000h6ee
Event Type
earthquake
Status
✓ Reviewed
Significance
369
Azimuthal Gap
54.0°
Min Station Distance
1.394°
RMS Residual
0.41 sec
Last Updated
2022-05-28 18:35:22 UTC

Common Questions

How strong was the magnitude 4.9 earthquake near Merizo Village, Guam?

The magnitude 4.9 earthquake that struck 115 km S of Merizo Village, Guam on March 21, 2022 at 14:56 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 12.2415°, 144.4707°, which is 115 km S of Merizo Village, Guam.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us6000h6ee). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, March 21, 2022). M4.9 Earthquake 115 km S of Merizo Village, GuamMarch 21, 2022. Retrieved May 28, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000h6ee/