5.1

M5.1 Earthquake near Kuril IslandsAugust 17, 2026

2026-08-17 21:36:35 UTC (1 hour ago) · approx. 7:36 AM UTC+10 local

MagnitudeM5.1(mb)
Time21:36 UTC7:36 AM UTC+10
Depth91.0 kmintermediate depth
Coordinates46.434°, 151.383°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 17, 2026 at 21:36 UTC, a magnitude 5.1 intermediate depth earthquake struck near Kuril Islands, at a depth of 91.0 km and coordinates 46.4341°, 151.3834°. This earthquake was detected by 77 seismic stations with good location accuracy and was assigned a USGS significance rating of 400, 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.

Map showing earthquake epicenter at 46.43°, 151.38°

Earthquake Details

Magnitude
5.1 mb
Depth
91.0 km
intermediate depth
Location
46.4341°N
151.3834°E

Technical Information

Event ID
us6000tlbz
Event Type
earthquake
Status
✓ Reviewed
Significance
400
Stations Used
77
Azimuthal Gap
120.0°
Min Station Distance
7.375°
RMS Residual
0.80 sec
Last Updated
2026-08-17 21:53:24 UTC

Common Questions

How strong was the magnitude 5.1 earthquake near Kuril Islands?

The magnitude 5.1 earthquake that struck near Kuril Islands on August 17, 2026 at 21:36 UTC had a depth of 91.0 km. For context, this was a moderate earthquake that could be widely felt.

Where did the earthquake occur?

The earthquake epicenter was located at 46.4341°, 151.3834°, which is near Kuril Islands.

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.

Authoritative source: USGS event page (event ID: us6000tlbz). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, August 17, 2026). M5.1 Earthquake near Kuril IslandsAugust 17, 2026. Retrieved August 17, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000tlbz/