2.1

M2.1 Earthquake 50 km WNW of Akhiok, AlaskaNovember 14, 2023

2023-11-14 20:20:39 UTC (2023-11-14) · approx. 10:20 AM UTC-10 local

MagnitudeM2.1(ml)
Time20:20 UTC10:20 AM UTC-10
Depth58.2 kmshallow crustal
Coordinates57.073°, -154.964°
Felt by1DYFI response
Status✓ Reviewed by USGS

On November 14, 2023 at 20:20 UTC, a magnitude 2.1 shallow crustal earthquake struck 50 km WNW of Akhiok, Alaska, at a depth of 58.2 km and coordinates 57.0733°, -154.9637°.

Physical scale: An earthquake of magnitude 2.1 releases seismic energy equivalent to roughly 21.3 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 17 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 57.07°, -154.96°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M2.1 earthquake near 50 km WNW of Akhiok, Alaska

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
2.1 ml
Depth
58.2 km
shallow crustal
Location
57.0733°N
-154.9637°E
Felt Reports
1
DYFI responses
Community Intensity
2.0
CDI from reports

Technical Information

Event ID
ak023em8xeng
Event Type
earthquake
Status
✓ Reviewed
Significance
68
RMS Residual
0.61 sec
Last Updated
2023-11-30 21:55:12 UTC

Common Questions

How strong was the magnitude 2.1 earthquake near Akhiok, Alaska?

The magnitude 2.1 earthquake that struck 50 km WNW of Akhiok, Alaska on November 14, 2023 at 20:20 UTC had a depth of 58.2 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 2.1 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 2.1 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: ak023em8xeng). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, November 14, 2023). M2.1 Earthquake 50 km WNW of Akhiok, AlaskaNovember 14, 2023. Retrieved November 30, 2023 from https://www.earthquaketracker.org/earthquakes/event/ak023em8xeng/