4.4

M4.4 Earthquake 36 km WSW of Puerto Armuelles, PanamaOctober 19, 2021

2021-10-19 19:53:27 UTC (2021-10-19) · approx. 1:53 PM UTC-6 local

MagnitudeM4.4(mb)
Time19:53 UTC1:53 PM UTC-6
Depth45.9 kmshallow crustal
Coordinates8.201°, -83.189°
Felt by1DYFI response
Status✓ Reviewed by USGS

On October 19, 2021 at 19:53 UTC, a magnitude 4.4 shallow crustal earthquake struck 36 km WSW of Puerto Armuelles, Panama, at a depth of 45.9 km and coordinates 8.2012°, -83.1888°.

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 8.20°, -83.19°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response 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 M4.4 earthquake near 36 km WSW of Puerto Armuelles, Panama

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

Earthquake Details

Magnitude
4.4 mb
Depth
45.9 km
shallow crustal
Location
8.2012°N
-83.1888°E
Felt Reports
1
DYFI responses
Community Intensity
2.0
CDI from reports

Technical Information

Event ID
us6000fvyw
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Azimuthal Gap
251.0°
Min Station Distance
0.245°
RMS Residual
0.77 sec
Last Updated
2021-12-25 22:58:49 UTC

Common Questions

How strong was the magnitude 4.4 earthquake near Puerto Armuelles, Panama?

The magnitude 4.4 earthquake that struck 36 km WSW of Puerto Armuelles, Panama on October 19, 2021 at 19:53 UTC had a depth of 45.9 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: us6000fvyw). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, October 19, 2021). M4.4 Earthquake 36 km WSW of Puerto Armuelles, PanamaOctober 19, 2021. Retrieved December 25, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000fvyw/