4.4

M4.4 Earthquake 183 km E of Saipan, Northern Mariana IslandsDecember 24, 2023

2023-12-24 18:38:26 UTC (2023-12-24) · approx. 4:38 AM UTC+10 local

MagnitudeM4.4(mb)
Time18:38 UTC4:38 AM UTC+10
Depth10.0 kmshallow crustal
Coordinates15.056°, 147.455°
Felt byNo felt reports
Status✓ Reviewed by USGS

On December 24, 2023 at 18:38 UTC, a magnitude 4.4 shallow crustal earthquake struck 183 km E of Saipan, Northern Mariana Islands, at a depth of 10.0 km and coordinates 15.0557°, 147.4546°.

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 15.06°, 147.45°

Earthquake Details

Magnitude
4.4 mb
Depth
10.0 km
shallow crustal
Location
15.0557°N
147.4546°E

Technical Information

Event ID
us6000m1r0
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Stations Used
22
Azimuthal Gap
93.0°
Min Station Distance
2.900°
RMS Residual
0.76 sec
Last Updated
2024-03-02 21:39:35 UTC

Common Questions

How strong was the magnitude 4.4 earthquake near Saipan, Northern Mariana Islands?

The magnitude 4.4 earthquake that struck 183 km E of Saipan, Northern Mariana Islands on December 24, 2023 at 18:38 UTC had a depth of 10.0 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: us6000m1r0). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, December 24, 2023). M4.4 Earthquake 183 km E of Saipan, Northern Mariana IslandsDecember 24, 2023. Retrieved March 2, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000m1r0/