4.4

M4.4 Earthquake 14 km SSE of Marihatag, PhilippinesDecember 18, 2023

2023-12-18 16:28:01 UTC (2023-12-18) · approx. 12:28 AM UTC+8 local

MagnitudeM4.4(mb)
Time16:28 UTC12:28 AM UTC+8
Depth81.6 kmintermediate depth
Coordinates8.681°, 126.339°
Felt byNo felt reports
Status✓ Reviewed by USGS

On December 18, 2023 at 16:28 UTC, a magnitude 4.4 intermediate depth earthquake struck 14 km SSE of Marihatag, Philippines, at a depth of 81.6 km and coordinates 8.6814°, 126.3387°.

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 8.68°, 126.34°

Earthquake Details

Magnitude
4.4 mb
Depth
81.6 km
intermediate depth
Location
8.6814°N
126.3387°E

Technical Information

Event ID
us6000m15a
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Stations Used
49
Azimuthal Gap
106.0°
Min Station Distance
1.769°
RMS Residual
1.03 sec
Last Updated
2024-02-27 22:56:56 UTC

Common Questions

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

The magnitude 4.4 earthquake that struck 14 km SSE of Marihatag, Philippines on December 18, 2023 at 16:28 UTC had a depth of 81.6 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: us6000m15a). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, December 18, 2023). M4.4 Earthquake 14 km SSE of Marihatag, PhilippinesDecember 18, 2023. Retrieved February 27, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000m15a/