4.1

M4.1 Earthquake 31 km SW of Tobelo, IndonesiaJuly 19, 2024

2024-07-19 18:48:24 UTC (2024-07-19) · approx. 3:48 AM UTC+9 local

MagnitudeM4.1(mb)
Time18:48 UTC3:48 AM UTC+9
Depth8.8 kmshallow crustal
Coordinates1.562°, 127.782°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 19, 2024 at 18:48 UTC, a magnitude 4.1 shallow crustal earthquake struck 31 km SW of Tobelo, Indonesia, at a depth of 8.8 km and coordinates 1.5620°, 127.7821°.

Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.

This earthquake is part of an ongoing aftershock sequence following the magnitude 5.3 mainshock that occurred 5 days ago 62 km W of Tobelo, Indonesia. Since the mainshock, the USGS has recorded 1 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.

Map showing earthquake epicenter at 1.56°, 127.78°

Earthquake Details

Magnitude
4.1 mb
Depth
8.8 km
shallow crustal
Location
1.5620°N
127.7821°E

Technical Information

Event ID
us6000nh5j
Event Type
earthquake
Status
✓ Reviewed
Significance
259
Stations Used
17
Azimuthal Gap
129.0°
Min Station Distance
0.888°
RMS Residual
0.61 sec
Last Updated
2024-09-28 22:41:18 UTC

Common Questions

How strong was the magnitude 4.1 earthquake near Tobelo, Indonesia?

The magnitude 4.1 earthquake that struck 31 km SW of Tobelo, Indonesia on July 19, 2024 at 18:48 UTC had a depth of 8.8 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 4.1 earthquakes can continue for several days and gradually diminish over time.

Is this the same earthquake as the M5.3 one earlier?

No. This magnitude 4.1 earthquake is an aftershock of the larger magnitude 5.3 mainshock that occurred earlier 62 km W of Tobelo, Indonesia. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.

Understanding This Data

Magnitude 4.1 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000nh5j). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, July 19, 2024). M4.1 Earthquake 31 km SW of Tobelo, IndonesiaJuly 19, 2024. Retrieved September 28, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000nh5j/