4.4

M4.4 Earthquake near Costa RicaAugust 11, 2023

2023-08-11 20:26:12 UTC (2023-08-11) · approx. 2:26 PM UTC-6 local

MagnitudeM4.4(mwr)
Time20:26 UTC2:26 PM UTC-6
Depth9.1 kmshallow crustal
Coordinates9.029°, -84.032°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 11, 2023 at 20:26 UTC, a magnitude 4.4 shallow crustal earthquake struck near Costa Rica, at a depth of 9.1 km and coordinates 9.0289°, -84.0324°.

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 9.03°, -84.03°

Earthquake Details

Magnitude
4.4 mwr
Depth
9.1 km
shallow crustal
Location
9.0289°N
-84.0324°E

Technical Information

Event ID
us6000kzgg
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Stations Used
16
Azimuthal Gap
171.0°
Min Station Distance
0.935°
RMS Residual
0.94 sec
Last Updated
2023-10-17 22:01:30 UTC

Common Questions

How strong was the magnitude 4.4 earthquake near Costa Rica?

The magnitude 4.4 earthquake that struck near Costa Rica on August 11, 2023 at 20:26 UTC had a depth of 9.1 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: us6000kzgg). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, August 11, 2023). M4.4 Earthquake near Costa RicaAugust 11, 2023. Retrieved October 17, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kzgg/