4.8

M4.8 Earthquake 31 km ESE of Inarajan Village, Guam — July 11, 2020

2020-07-11 19:31:24 UTC (2020-07-11) · approx. 5:31 AM UTC+10 local

Felt by 2 people across nearby locations.

MagnitudeM4.8(mb)
Time19:31 UTC≈ 5:31 AM UTC+10
Depth45.0 kmshallow crustal
Coordinates13.167°, 145.015°
Felt by2DYFI responses
Status✓ Reviewed by USGS

On July 11, 2020 at 19:31 UTC, a magnitude 4.8 shallow crustal earthquake struck 31 km ESE of Inarajan Village, Guam, at a depth of 45.0 km and coordinates 13.1674°, 145.0148°.

Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 13.17°, 145.01°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 2 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M4.8 earthquake near 31 km ESE of Inarajan Village, Guam

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
4.8 mb
Depth
45.0 km
shallow crustal
Location
13.1674°N
145.0148°E
Felt Reports
2
DYFI responses
Community Intensity
2.0
CDI from reports

Technical Information

Event ID
us7000am0v
Event Type
earthquake
Status
✓ Reviewed
Significance
355
Azimuthal Gap
48.0°
Min Station Distance
0.442°
RMS Residual
0.67 sec
Last Updated
2020-09-19 20:58:09 UTC

Common Questions

How strong was the magnitude 4.8 earthquake near Inarajan Village, Guam?

The magnitude 4.8 earthquake that struck 31 km ESE of Inarajan Village, Guam on July 11, 2020 at 19:31 UTC had a depth of 45.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 13.1674°, 145.0148°, which is 31 km ESE of Inarajan Village, Guam.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000am0v). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, July 11, 2020). M4.8 Earthquake 31 km ESE of Inarajan Village, Guam — July 11, 2020. Retrieved September 19, 2020 from https://www.earthquaketracker.org/earthquakes/event/us7000am0v/