4.6

M4.6 Earthquake 95 km WNW of Kirakira, Solomon Islands — April 22, 2021

2021-04-22 23:35:02 UTC (2021-04-22) · approx. 10:35 AM UTC+11 local

MagnitudeM4.6(mb)
Time23:35 UTC≈ 10:35 AM UTC+11
Depth62.7 kmshallow crustal
Coordinates-10.239°, 161.074°
Felt byNo felt reports
Status✓ Reviewed by USGS

On April 22, 2021 at 23:35 UTC, a magnitude 4.6 shallow crustal earthquake struck 95 km WNW of Kirakira, Solomon Islands, at a depth of 62.7 km and coordinates -10.2387°, 161.0740°.

Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -10.24°, 161.07°

Earthquake Details

Magnitude
4.6 mb
Depth
62.7 km
shallow crustal
Location
-10.2387°N
161.0740°E

Technical Information

Event ID
us6000e3tl
Event Type
earthquake
Status
✓ Reviewed
Significance
326
Azimuthal Gap
107.0°
Min Station Distance
1.365°
RMS Residual
0.60 sec
Last Updated
2021-07-03 16:49:24 UTC

Common Questions

How strong was the magnitude 4.6 earthquake near Kirakira, Solomon Islands?

The magnitude 4.6 earthquake that struck 95 km WNW of Kirakira, Solomon Islands on April 22, 2021 at 23:35 UTC had a depth of 62.7 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at -10.2387°, 161.0740°, which is 95 km WNW of Kirakira, Solomon Islands.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us6000e3tl). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, April 22, 2021). M4.6 Earthquake 95 km WNW of Kirakira, Solomon Islands — April 22, 2021. Retrieved July 3, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000e3tl/