4.9

M4.9 Earthquake 135 km NW of Malango, Solomon Islands — August 18, 2020

2020-08-18 18:36:25 UTC (2020-08-18) · approx. 5:36 AM UTC+11 local

MagnitudeM4.9(mww)
Time18:36 UTC≈ 5:36 AM UTC+11
Depth10.3 kmshallow crustal
Coordinates-9.011°, 158.700°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 18, 2020 at 18:36 UTC, a magnitude 4.9 shallow crustal earthquake struck 135 km NW of Malango, Solomon Islands, at a depth of 10.3 km and coordinates -9.0105°, 158.6996°.

Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -9.01°, 158.70°

Earthquake Details

Magnitude
4.9 mww
Depth
10.3 km
shallow crustal
Location
-9.0105°N
158.6996°E

Technical Information

Event ID
us6000bgq6
Event Type
earthquake
Status
✓ Reviewed
Significance
369
Azimuthal Gap
33.0°
Min Station Distance
1.303°
RMS Residual
0.99 sec
Last Updated
2025-12-22 17:58:25 UTC

Common Questions

How strong was the magnitude 4.9 earthquake near Malango, Solomon Islands?

The magnitude 4.9 earthquake that struck 135 km NW of Malango, Solomon Islands on August 18, 2020 at 18:36 UTC had a depth of 10.3 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at -9.0105°, 158.6996°, which is 135 km NW of Malango, Solomon Islands.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us6000bgq6). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, August 18, 2020). M4.9 Earthquake 135 km NW of Malango, Solomon Islands — August 18, 2020. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000bgq6/