2.1

M2.1 Earthquake 1 km S of Clam Gulch, AlaskaApril 8, 2024

2024-04-08 17:27:49 UTC (2024-04-08) · approx. 7:27 AM UTC-10 local

MagnitudeM2.1(ml)
Time17:27 UTC7:27 AM UTC-10
Depth43.3 kmshallow crustal
Coordinates60.214°, -151.396°
Felt by1DYFI response
Status✓ Reviewed by USGS

On April 8, 2024 at 17:27 UTC, a magnitude 2.1 shallow crustal earthquake struck 1 km S of Clam Gulch, Alaska, at a depth of 43.3 km and coordinates 60.2135°, -151.3958°.

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 60.21°, -151.40°

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 1 km S of Clam Gulch, Alaska

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

Earthquake Details

Magnitude
2.1 ml
Depth
43.3 km
shallow crustal
Location
60.2135°N
-151.3958°E
Felt Reports
1
DYFI responses
Community Intensity
2.0
CDI from reports

Technical Information

Event ID
ak0244k0hmb9
Event Type
earthquake
Status
✓ Reviewed
Significance
68
RMS Residual
0.61 sec
Last Updated
2024-05-08 02:19:51 UTC

Common Questions

How strong was the magnitude 2.1 earthquake near Clam Gulch, Alaska?

The magnitude 2.1 earthquake that struck 1 km S of Clam Gulch, Alaska on April 8, 2024 at 17:27 UTC had a depth of 43.3 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: ak0244k0hmb9). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, April 8, 2024). M2.1 Earthquake 1 km S of Clam Gulch, AlaskaApril 8, 2024. Retrieved May 8, 2024 from https://www.earthquaketracker.org/earthquakes/event/ak0244k0hmb9/