4.3

M4.3 Earthquake near Banda SeaJuly 21, 2023

2023-07-21 17:27:26 UTC (2023-07-21) · approx. 2:27 AM UTC+9 local

MagnitudeM4.3(mb)
Time17:27 UTC2:27 AM UTC+9
Depth160.6 kmintermediate depth
Coordinates-6.651°, 129.813°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 21, 2023 at 17:27 UTC, a magnitude 4.3 intermediate depth earthquake struck near Banda Sea, at a depth of 160.6 km and coordinates -6.6505°, 129.8131°.

Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -6.65°, 129.81°

Earthquake Details

Magnitude
4.3 mb
Depth
160.6 km
intermediate depth
Location
-6.6505°N
129.8131°E

Technical Information

Event ID
us6000kw8c
Event Type
earthquake
Status
✓ Reviewed
Significance
284
Stations Used
21
Azimuthal Gap
98.0°
Min Station Distance
2.116°
RMS Residual
0.81 sec
Last Updated
2024-01-18 20:32:00 UTC

Common Questions

How strong was the magnitude 4.3 earthquake near Banda Sea?

The magnitude 4.3 earthquake that struck near Banda Sea on July 21, 2023 at 17:27 UTC had a depth of 160.6 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 4.3 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.3 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000kw8c). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, July 21, 2023). M4.3 Earthquake near Banda SeaJuly 21, 2023. Retrieved January 18, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000kw8c/