M3.1 Earthquake 5 km SSE of P?hala, Hawaii — November 16, 2021
2021-11-16 18:53:58 UTC (2021-11-16) · approx. 8:53 AM UTC-10 local
On November 16, 2021 at 18:53 UTC, a magnitude 3.1 shallow crustal earthquake struck 5 km SSE of P?hala, Hawaii, at a depth of 33.5 km and coordinates 19.1592°, -155.4617°.0
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 587 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 78 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 submitted 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
-155.4617°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.1 earthquake near P?hala, Hawaii?
The magnitude 3.1 earthquake that struck 5 km SSE of P?hala, Hawaii on November 16, 2021 at 18:53 UTC had a depth of 33.5 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 3.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: hv72798347). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 16, 2021). M3.1 Earthquake 5 km SSE of P?hala, Hawaii — November 16, 2021. Retrieved January 22, 2022 from https://www.earthquaketracker.org/earthquakes/event/hv72798347/