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Update: Earthquake that struck Big Island has been downgraded to magnitude 5.7

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Punalu‘u Bake Shop following quake on Feb. 9, 2024. (Photo courtesy: Facebook)

11:04 a.m. Feb. 9 update: Initially reported as a 6.3 magnitude earthquake, the tumbler that struck Hawai‘i Island this morning has since been downgraded to a 5.7 on the Richter scale.

The quake occurred near Pāhala in Kaʻū at 10:07 a.m., 23 miles below sea level. Following the seismic event, it has been confirmed that there is no tsunami threat to the region.

According to Hawaiian Volcano Observatory, the earthquake had no apparent impact on either Mauna Loa or Kīlauea volcanoes. Numerous aftershocks have been felt and are expected to continue. 

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There were no reports of major damage, but Punalu‘u Bake Shop posted photos of the quake’s aftermath that showed products in the store strewn about the floor. The staff evacuated customers at the time of the incident and no injuries were reported.

This earthquake is likely associated with lithospheric flexure caused by the weight of the Hawaiian Islands on the oceanic lithosphere.  According to U.S. Geological Survey, the Earth’s tectonic plates are made of the lithosphere, which is a mostly rigid layer extending from the crust into the upper mantle.

As the Hawaiian Islands ride on top of the Pacific Plate, their immense weight bends, or flexes, the lithosphere. 

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The USGS Hawaiian Volcano Observatory continues to monitor Hawaiian volcanoes for any changes. 

At present, the known damages primarily consist of minor landslides, resulting in debris on various roadways. Hawaiʻi County Department of Public Works and State Highways teams have responded to clear the areas.

As of now, there have been no reports of significant damages.

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Residents who have experienced damages as a result of this morning’s earthquake are encouraged to declare them via the County of Hawaiʻi Civil Defense website.

For further information and updates, visit https://hawaii-county-civil-defense-agency-hawaiicountygis.hub.arcgis.com/.

Original post: A magnitude 6.3 earthquake rumbled the Big Island at around 10 a.m., according to the U.S. Geological Survey. No tsunami is expected.

The epicenter of the quake was about three miles southeast of Nā‘ālehu. A 2.3 magnitude aftershock was also felt.

More information will be provided as it becomes available.

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