M3.6 Earthquake 1 km SSE of Hōlualoa, Hawaii — May 23, 2026
2026-05-23 17:25:12 UTC (1 hour ago) · approx. 7:25 AM UTC-10 local
On May 23, 2026 at 17:25 UTC, a magnitude 3.6 shallow crustal earthquake struck 1 km SSE of Hōlualoa, Hawaii, at a depth of 38.7 km and coordinates 19.6088°, -155.9455°.
Physical scale: An earthquake of magnitude 3.6 releases seismic energy equivalent to roughly 4.5 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 199 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 6.0 mainshock that occurred 10 hours ago 13 km S of Honaunau-Napoopoo, Hawaii. Since the mainshock, the USGS has recorded 13 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 9 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
-155.9455°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.6 earthquake near Hōlualoa, Hawaii?
The magnitude 3.6 earthquake that struck 1 km SSE of Hōlualoa, Hawaii on May 23, 2026 at 17:25 UTC had a depth of 38.7 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 3.6 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M6.0 one earlier?
No. This magnitude 3.6 earthquake is an aftershock of the larger magnitude 6.0 mainshock that occurred earlier 13 km S of Honaunau-Napoopoo, Hawaii. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Actions
Understanding This Data
Magnitude 3.6 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: hv74966927). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, May 23, 2026). M3.6 Earthquake 1 km SSE of Hōlualoa, Hawaii — May 23, 2026. Retrieved May 23, 2026 from https://www.earthquaketracker.org/earthquakes/event/hv74966927/