4.4

M4.4 Earthquake 18 km N of San Isidro, Costa RicaJanuary 25, 2024

2024-01-25 23:50:40 UTC (2024-01-25) · approx. 5:50 PM UTC-6 local

Felt by 13 people across nearby locations.

MagnitudeM4.4(mb)
Time23:50 UTC5:50 PM UTC-6
Depth55.2 kmshallow crustal
Coordinates9.531°, -83.718°
Felt by13DYFI responses
Status✓ Reviewed by USGS

On January 25, 2024 at 23:50 UTC, a magnitude 4.4 shallow crustal earthquake struck 18 km N of San Isidro, Costa Rica, at a depth of 55.2 km and coordinates 9.5312°, -83.7184°. This earthquake was detected by 33 seismic stations with good location accuracy and was assigned a USGS significance rating of 302, placing it among routine seismic activity.

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 9.53°, -83.72°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 13 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 M4.4 earthquake near 18 km N of San Isidro, Costa Rica

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

Earthquake Details

Magnitude
4.4 mb
Depth
55.2 km
shallow crustal
Location
9.5312°N
-83.7184°E
Felt Reports
13
DYFI responses
Community Intensity
3.4
CDI from reports

Technical Information

Event ID
us7000ltuw
Event Type
earthquake
Status
✓ Reviewed
Significance
302
Stations Used
33
Azimuthal Gap
144.0°
Min Station Distance
0.607°
RMS Residual
0.71 sec
Last Updated
2024-03-30 22:33:39 UTC

Common Questions

How strong was the magnitude 4.4 earthquake near San Isidro, Costa Rica?

The magnitude 4.4 earthquake that struck 18 km N of San Isidro, Costa Rica on January 25, 2024 at 23:50 UTC had a depth of 55.2 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 9.5312°, -83.7184°, which is 18 km N of San Isidro, Costa Rica.

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.

Authoritative source: USGS event page (event ID: us7000ltuw). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, January 25, 2024). M4.4 Earthquake 18 km N of San Isidro, Costa RicaJanuary 25, 2024. Retrieved March 30, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000ltuw/