How strong was the 41 km WNW of Happy Valley, Alaska earthquake?
The 41 km WNW of Happy Valley, Alaska earthquake had a magnitude of 4.5 mww, classified as a "Light" earthquake on the magnitude scale. Earthquakes of this magnitude are typically felt by people nearby but rarely cause significant structural damage.
Where exactly did this earthquake occur and how deep was it?
This earthquake struck at coordinates 60.0244N, 152.4675W, at a depth of 100.1 km. Deep earthquakes are generally felt over a wider area but cause less intense shaking at the surface.
Did this earthquake trigger a tsunami warning?
Yes, a tsunami advisory or warning was associated with this earthquake. Coastal residents in affected areas should always follow local emergency management guidance during tsunami events. Even small tsunamis can produce dangerous currents.
How many people felt this earthquake?
166 people submitted felt reports to the USGS for this earthquake. The Community Decimal Intensity (CDI) reached 3.4, indicating light shaking noticed by some people. The Modified Mercalli Intensity (MMI) was estimated at 3.6.
When did this earthquake happen and how significant was it?
This earthquake occurred on July 6, 2025 at 03:15:07. The USGS assigned it a significance score of 368 out of a possible 3,000, which factors in magnitude, felt reports, and potential impact. This is a relatively routine seismic event.