M2.9 Earthquake 42 km ESE of Naalehu, Hawaii — July 19, 2022
2022-07-19 17:48:07 UTC (2022-07-19) · approx. 7:48 AM UTC-10 local
On July 19, 2022 at 17:48 UTC, a magnitude 2.9 shallow crustal earthquake struck 42 km ESE of Naalehu, Hawaii, at a depth of 6.9 km and coordinates 18.8913°, -155.2185°.
Physical scale: An earthquake of magnitude 2.9 releases seismic energy equivalent to roughly 294 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 57 m — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.2 mainshock that occurred 29 days ago 42 km ESE of Naalehu, Hawaii. Since the mainshock, the USGS has recorded 10 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
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.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-155.2185°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 2.9 earthquake near Naalehu, Hawaii?
The magnitude 2.9 earthquake that struck 42 km ESE of Naalehu, Hawaii on July 19, 2022 at 17:48 UTC had a depth of 6.9 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.
Is this the same earthquake as the M5.2 one earlier?
No. This magnitude 2.9 earthquake is an aftershock of the larger magnitude 5.2 mainshock that occurred earlier 42 km ESE of Naalehu, Hawaii. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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Understanding This Data
Magnitude 2.9 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: hv73080667). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, July 19, 2022). M2.9 Earthquake 42 km ESE of Naalehu, Hawaii — July 19, 2022. Retrieved September 27, 2022 from https://www.earthquaketracker.org/earthquakes/event/hv73080667/