3.6

M3.6 Earthquake near Rat Islands, Aleutian Islands, AlaskaAugust 17, 2022

2022-08-17 22:38:48 UTC (2022-08-17) · approx. 10:38 AM UTC+12 local

MagnitudeM3.6(mb)
Time22:38 UTC10:38 AM UTC+12
Depth38.1 kmshallow crustal
Coordinates51.212°, 178.548°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 17, 2022 at 22:38 UTC, a magnitude 3.6 shallow crustal earthquake struck near Rat Islands, Aleutian Islands, Alaska, at a depth of 38.1 km and coordinates 51.2123°, 178.5477°.

Physical scale: An earthquake of magnitude 3.6 releases seismic energy equivalent to roughly 3.8 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 184 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 51.21°, 178.55°

Earthquake Details

Magnitude
3.6 mb
Depth
38.1 km
shallow crustal
Location
51.2123°N
178.5477°E

Technical Information

Event ID
us7000i2lp
Event Type
earthquake
Status
✓ Reviewed
Significance
199
Stations Used
29
Azimuthal Gap
219.0°
Min Station Distance
0.502°
RMS Residual
0.69 sec
Last Updated
2022-10-28 02:28:03 UTC

Common Questions

How strong was the magnitude 3.6 earthquake near Rat Islands, Aleutian Islands, Alaska?

The magnitude 3.6 earthquake that struck near Rat Islands, Aleutian Islands, Alaska on August 17, 2022 at 22:38 UTC had a depth of 38.1 km. For context, this was a minor earthquake typically detected only by instruments.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.6 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.6 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000i2lp). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, August 17, 2022). M3.6 Earthquake near Rat Islands, Aleutian Islands, AlaskaAugust 17, 2022. Retrieved October 28, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000i2lp/