A magnitude 5.7 earthquake struck just south of the Big Island of Hawaii on Friday, according to the US Geological Survey (USGS). Initially reported as a 6.3 magnitude earthquake, the USGS later downgraded the measurement. The epicenter was located 11 miles (18 kilometers) south of Naalehu, Hawaii, at a depth of 6 miles (10 kilometers).
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.
UPDATE–REVISED EARTHQUAKE PARAMETERS: The earthquake at 10:07am HST today (2/9) was determined to be on the SE flank of Mauna Loa, and the magnitude downgraded to 5.7. There is still NO tsunami threat expected. pic.twitter.com/W1De60sMzu
— Hawaii EMA (@Hawaii_EMA) February 9, 2024
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.
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.
