2.9

M2.9 Earthquake 49 km SSW of Covenant Life, AlaskaOctober 28, 2023

2023-10-28 20:33:40 UTC (2023-10-28) · approx. 11:33 AM UTC-9 local

MagnitudeM2.9(ml)
Time20:33 UTC11:33 AM UTC-9
Depth6.5 kmshallow crustal
Coordinates59.032°, -136.439°
Felt by1DYFI response
Status✓ Reviewed by USGS

On October 28, 2023 at 20:33 UTC, a magnitude 2.9 shallow crustal earthquake struck 49 km SSW of Covenant Life, Alaska, at a depth of 6.5 km and coordinates 59.0318°, -136.4393°.

Physical scale: An earthquake of magnitude 2.9 releases seismic energy equivalent to roughly 338 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 60 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 59.03°, -136.44°

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 M2.9 earthquake near 49 km SSW of Covenant Life, Alaska

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

Earthquake Details

Magnitude
2.9 ml
Depth
6.5 km
shallow crustal
Location
59.0318°N
-136.4393°E
Felt Reports
1
DYFI responses
Community Intensity
2.0
CDI from reports

Technical Information

Event ID
us7000l78w
Event Type
earthquake
Status
✓ Reviewed
Significance
130
Stations Used
27
Azimuthal Gap
114.0°
Min Station Distance
0.426°
RMS Residual
0.56 sec
Last Updated
2024-01-04 04:22:41 UTC

Common Questions

How strong was the magnitude 2.9 earthquake near Covenant Life, Alaska?

The magnitude 2.9 earthquake that struck 49 km SSW of Covenant Life, Alaska on October 28, 2023 at 20:33 UTC had a depth of 6.5 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 2.9 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 2.9 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000l78w). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, October 28, 2023). M2.9 Earthquake 49 km SSW of Covenant Life, AlaskaOctober 28, 2023. Retrieved January 4, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000l78w/