3.1

M3.1 Earthquake near Alaska PeninsulaMay 24, 2023

2023-05-24 21:02:45 UTC (2023-05-24) · approx. 11:02 AM UTC-10 local

MagnitudeM3.1(ml)
Time21:02 UTC11:02 AM UTC-10
Depth9.7 kmshallow crustal
Coordinates55.290°, -157.396°
Felt byNo felt reports
Status✓ Reviewed by USGS

On May 24, 2023 at 21:02 UTC, a magnitude 3.1 shallow crustal earthquake struck near Alaska Peninsula, at a depth of 9.7 km and coordinates 55.2901°, -157.3963°.

Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 674 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 83 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 55.29°, -157.40°

Earthquake Details

Magnitude
3.1 ml
Depth
9.7 km
shallow crustal
Location
55.2901°N
-157.3963°E

Technical Information

Event ID
ak0236mhwmd7
Event Type
earthquake
Status
✓ Reviewed
Significance
148
RMS Residual
0.52 sec
Last Updated
2023-07-29 22:00:35 UTC

Common Questions

How strong was the magnitude 3.1 earthquake near Alaska Peninsula?

The magnitude 3.1 earthquake that struck near Alaska Peninsula on May 24, 2023 at 21:02 UTC had a depth of 9.7 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 3.1 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.1 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: ak0236mhwmd7). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, May 24, 2023). M3.1 Earthquake near Alaska PeninsulaMay 24, 2023. Retrieved July 29, 2023 from https://www.earthquaketracker.org/earthquakes/event/ak0236mhwmd7/