3.9

M3.9 Earthquake near Rat Islands, Aleutian Islands, AlaskaJune 5, 2024

2024-06-05 18:41:17 UTC (2024-06-05) · approx. 6:41 AM UTC+12 local

MagnitudeM3.9(mb)
Time18:41 UTC6:41 AM UTC+12
Depth121.9 kmintermediate depth
Coordinates51.776°, 178.023°
Felt byNo felt reports
Status✓ Reviewed by USGS

On June 5, 2024 at 18:41 UTC, a magnitude 3.9 intermediate depth earthquake struck near Rat Islands, Aleutian Islands, Alaska, at a depth of 121.9 km and coordinates 51.7757°, 178.0227°.

Physical scale: An earthquake of magnitude 3.9 releases seismic energy equivalent to roughly 11 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 296 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 51.78°, 178.02°

ShakeMap — predicted shaking intensity

Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.

USGS ShakeMap intensity contours for the M3.9 earthquake near Rat Islands, Aleutian Islands, Alaska

Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS

Earthquake Details

Magnitude
3.9 mb
Depth
121.9 km
intermediate depth
Location
51.7757°N
178.0227°E
Intensity (MMI)
2.8
weak

Technical Information

Event ID
us7000mqjv
Event Type
earthquake
Status
✓ Reviewed
Significance
234
Stations Used
72
Azimuthal Gap
103.0°
Min Station Distance
0.349°
RMS Residual
0.82 sec
Last Updated
2024-08-16 21:59:23 UTC

Common Questions

How strong was the magnitude 3.9 earthquake near Rat Islands, Aleutian Islands, Alaska?

The magnitude 3.9 earthquake that struck near Rat Islands, Aleutian Islands, Alaska on June 5, 2024 at 18:41 UTC had a depth of 121.9 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 3.9 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.9 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000mqjv). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, June 5, 2024). M3.9 Earthquake near Rat Islands, Aleutian Islands, AlaskaJune 5, 2024. Retrieved August 16, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000mqjv/