4.3

M4.3 Earthquake 79 km S of Bambanglipuro, Indonesia — February 23, 2021

2021-02-23 23:18:07 UTC (2021-02-23) · approx. 6:18 AM UTC+7 local

MagnitudeM4.3(mb)
Time23:18 UTC≈ 6:18 AM UTC+7
Depth59.2 kmshallow crustal
Coordinates-8.667°, 110.290°
Felt byNo felt reports
Status✓ Reviewed by USGS

On February 23, 2021 at 23:18 UTC, a magnitude 4.3 shallow crustal earthquake struck 79 km S of Bambanglipuro, Indonesia, at a depth of 59.2 km and coordinates -8.6668°, 110.2896°.

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 -8.67°, 110.29°

Earthquake Details

Magnitude
4.3 mb
Depth
59.2 km
shallow crustal
Location
-8.6668°N
110.2896°E

Technical Information

Event ID
us7000ddyc
Event Type
earthquake
Status
✓ Reviewed
Significance
284
Azimuthal Gap
114.0°
Min Station Distance
0.784°
RMS Residual
0.88 sec
Last Updated
2021-05-04 14:16:45 UTC

Common Questions

How strong was the magnitude 4.3 earthquake near Bambanglipuro, Indonesia?

The magnitude 4.3 earthquake that struck 79 km S of Bambanglipuro, Indonesia on February 23, 2021 at 23:18 UTC had a depth of 59.2 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: us7000ddyc). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, February 23, 2021). M4.3 Earthquake 79 km S of Bambanglipuro, Indonesia — February 23, 2021. Retrieved May 4, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000ddyc/