2.7

M2.7 Earthquake 6 km WSW of Meadow Lakes, AlaskaSeptember 25, 2021

2021-09-25 17:01:59 UTC (2021-09-25) · approx. 7:01 AM UTC-10 local

MagnitudeM2.7(ml)
Time17:01 UTC7:01 AM UTC-10
Depth19.1 kmshallow crustal
Coordinates61.597°, -149.702°
Felt by3DYFI responses
StatusAutomatic (preliminary)

On September 25, 2021 at 17:01 UTC, a magnitude 2.7 shallow crustal earthquake struck 6 km WSW of Meadow Lakes, Alaska, at a depth of 19.1 km and coordinates 61.5970°, -149.7015°.

Physical scale: An earthquake of magnitude 2.7 releases seismic energy equivalent to roughly 169 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 44 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 61.60°, -149.70°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 3 citizen responses 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 M2.7 earthquake near 6 km WSW of Meadow Lakes, Alaska

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

Earthquake Details

Magnitude
2.7 ml
Depth
19.1 km
shallow crustal
Location
61.5970°N
-149.7015°E
Felt Reports
3
DYFI responses
Community Intensity
2.0
CDI from reports

Technical Information

Event ID
ak021cbi5pwa
Event Type
earthquake
Status
Automatic
Significance
113
RMS Residual
0.79 sec
Last Updated
2021-12-04 14:29:35 UTC

Common Questions

How strong was the magnitude 2.7 earthquake near Meadow Lakes, Alaska?

The magnitude 2.7 earthquake that struck 6 km WSW of Meadow Lakes, Alaska on September 25, 2021 at 17:01 UTC had a depth of 19.1 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 2.7 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 2.7 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: ak021cbi5pwa). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, September 25, 2021). M2.7 Earthquake 6 km WSW of Meadow Lakes, AlaskaSeptember 25, 2021. Retrieved December 4, 2021 from https://www.earthquaketracker.org/earthquakes/event/ak021cbi5pwa/