M3.2 Earthquake 51 km WSW of Captain Cook, Hawaii — October 30, 2021
2021-10-30 16:11:37 UTC (2021-10-30) · approx. 6:11 AM UTC-10 local
On October 30, 2021 at 16:11 UTC, a magnitude 3.2 shallow crustal earthquake struck 51 km WSW of Captain Cook, Hawaii, at a depth of 37.2 km and coordinates 19.2552°, -156.3445°.
Physical scale: An earthquake of magnitude 3.2 releases seismic energy equivalent to roughly 858 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 93 m — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 2 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-156.3445°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.2 earthquake near Captain Cook, Hawaii?
The magnitude 3.2 earthquake that struck 51 km WSW of Captain Cook, Hawaii on October 30, 2021 at 16:11 UTC had a depth of 37.2 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 3.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.2 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: hv72775457). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, October 30, 2021). M3.2 Earthquake 51 km WSW of Captain Cook, Hawaii — October 30, 2021. Retrieved January 14, 2022 from https://www.earthquaketracker.org/earthquakes/event/hv72775457/