4.4

M4.4 Earthquake 245 km SSE of Sarangani, PhilippinesAugust 1, 2023

2023-08-01 22:22:57 UTC (2023-08-01) · approx. 6:22 AM UTC+8 local

MagnitudeM4.4(mb)
Time22:22 UTC6:22 AM UTC+8
Depth59.0 kmshallow crustal
Coordinates3.519°, 126.639°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 1, 2023 at 22:22 UTC, a magnitude 4.4 shallow crustal earthquake struck 245 km SSE of Sarangani, Philippines, at a depth of 59.0 km and coordinates 3.5186°, 126.6394°.

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 3.52°, 126.64°

Earthquake Details

Magnitude
4.4 mb
Depth
59.0 km
shallow crustal
Location
3.5186°N
126.6394°E

Technical Information

Event ID
us6000kzbk
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Stations Used
17
Azimuthal Gap
118.0°
Min Station Distance
2.824°
RMS Residual
1.03 sec
Last Updated
2023-10-07 21:39:00 UTC

Common Questions

How strong was the magnitude 4.4 earthquake near Sarangani, Philippines?

The magnitude 4.4 earthquake that struck 245 km SSE of Sarangani, Philippines on August 1, 2023 at 22:22 UTC had a depth of 59.0 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: us6000kzbk). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, August 1, 2023). M4.4 Earthquake 245 km SSE of Sarangani, PhilippinesAugust 1, 2023. Retrieved October 7, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kzbk/