M5.1 Earthquake near Java, Indonesia — July 23, 2023
2023-07-23 12:33:29 UTC (2023-07-23) · approx. 7:33 PM UTC+7 local
Felt by 13 people across nearby locations.
On July 23, 2023 at 12:33 UTC, a magnitude 5.1 intermediate depth earthquake struck near Java, Indonesia, at a depth of 96.6 km and coordinates -8.6271°, 111.1186°. This earthquake was detected by 80 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 405, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.1 releases seismic energy equivalent to roughly 674 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.0 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Indonesia, a region characterized by the convergence of the Indo-Australian, Eurasian, and Philippine Sea plates, forming the Sunda-Banda arc system. The nearest mapped fault system is the Sunda megathrust. View all earthquakes in Indonesia.
Learn more: Magnitude scale · Aftershock sequences
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.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
111.1186°E
Technical Information
Common Questions
How strong was the magnitude 5.1 earthquake near Java, Indonesia?
The magnitude 5.1 earthquake that struck near Java, Indonesia on July 23, 2023 at 12:33 UTC had a depth of 96.6 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -8.6271°, 111.1186°, which is near Java, Indonesia. View all earthquakes in Indonesia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.1 earthquakes can continue for days to weeks and gradually diminish over time.
Has Indonesia had earthquakes this big before?
The largest recorded earthquake in Indonesia was the M9.1 Indian Ocean earthquake of December 26, 2004. Today's magnitude 5.1 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us7000khss). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, July 23, 2023). M5.1 Earthquake near Java, Indonesia — July 23, 2023. Retrieved September 30, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000khss/