M4.0 Earthquake 3 km E of Pāhala, Hawaii — April 5, 2026
2026-04-05 21:41:53 UTC (2026-04-05) · approx. 11:41 AM UTC-10 local
Felt by 56 people across nearby locations. Maximum shaking intensity MMI 4.8 (moderate).
On April 5, 2026 at 21:41 UTC, a magnitude 4.0 shallow crustal earthquake struck 3 km E of Pāhala, Hawaii, at a depth of 8.1 km and coordinates 19.2010°, -155.4422°. The earthquake was reported felt by 56 peopleacross nearby locations, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 4.8 (moderate). The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 56 seismic stations with good location accuracy and was assigned a USGS significance rating of 262, placing it among routine seismic activity. The nearest populated place is Pahala (population 2,210).
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 14 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 331 m — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Hawaii, a region characterized by intraplate volcanic activity over the Hawaiian mantle plume hotspot, with seismicity driven by magma intrusion and flank instability. View all earthquakes in Hawaii.
Learn more: Magnitude scale · Aftershock sequences
Nearest Populated Places
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 56 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
Population exposure (USGS PAGER)
Estimated population that experienced each level of shaking. Based on the USGS PAGER rapid impact assessment, which combines ShakeMap output with global population grids.
| Shaking intensity (MMI) | Description | Population exposed |
|---|---|---|
| MMI 3 | weak | 12,050 |
| MMI 4 | light | 1,644 |
Earthquake Details
-155.4422°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Pāhala, Hawaii?
The magnitude 4.0 earthquake that struck 3 km E of Pāhala, Hawaii on April 5, 2026 at 21:41 UTC had a depth of 8.1 km. It was felt by 56 people with maximum shaking intensity of MMI 4.8 (moderate). For context, this was a minor earthquake typically detected only by instruments.
Where did the earthquake occur?
The earthquake epicenter was located at 19.2010°, -155.4422°, which is 3 km E of Pāhala, Hawaii. The nearest populated place is Pahala (population 2,210). View all earthquakes in Hawaii.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.0 earthquakes can continue for several days and gradually diminish over time.
Has Hawaii had earthquakes this big before?
The largest recorded earthquake in Hawaii was the M7.9 Ka'u District earthquake of April 2, 1868. Today's magnitude 4.0 event is significantly smaller than that historical record.
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.
Authoritative source: USGS event page (event ID: hv74931967). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, April 5, 2026). M4.0 Earthquake 3 km E of Pāhala, Hawaii — April 5, 2026. Retrieved May 16, 2026 from https://www.earthquaketracker.org/earthquakes/event/hv74931967/