2.1

M2.1 Earthquake 7 km NNE of Healy, Alaska — May 28, 2020

2020-05-28 23:41:49 UTC (2020-05-28) · approx. 1:41 PM UTC-10 local

MagnitudeM2.1(ml)
Time23:41 UTC≈ 1:41 PM UTC-10
Depth0.0 kmshallow crustal
Coordinates63.926°, -148.932°
Felt by1DYFI response
Status✓ Reviewed by USGS

On May 28, 2020 at 23:41 UTC, a magnitude 2.1 shallow crustal earthquake struck 7 km NNE of Healy, Alaska, at a depth of 0.0 km and coordinates 63.9261°, -148.9318°.

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 63.93°, -148.93°

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 7 km NNE of Healy, Alaska

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

Earthquake Details

Magnitude
2.1 ml
Depth
0.0 km
shallow crustal
Location
63.9261°N
-148.9318°E
Felt Reports
1
DYFI responses
Community Intensity
2.2
CDI from reports

Technical Information

Event ID
ak0206ut0kmb
Event Type
explosion
Status
✓ Reviewed
Significance
68
RMS Residual
0.63 sec
Last Updated
2020-08-15 20:19:45 UTC

Common Questions

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

The magnitude 2.1 earthquake that struck 7 km NNE of Healy, Alaska on May 28, 2020 at 23:41 UTC had a depth of 0.0 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: ak0206ut0kmb). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, May 28, 2020). M2.1 Earthquake 7 km NNE of Healy, Alaska — May 28, 2020. Retrieved August 15, 2020 from https://www.earthquaketracker.org/earthquakes/event/ak0206ut0kmb/