USGS HVO Press Release - Magnitude-3.5 Earthquake beneath Haleakalā Shakes Maui and Neighboring Islands

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A magnitude-3.5 earthquake beneath Haleakalā Volcano on Maui was recorded by the U.S. Geological Survey's Hawaiian Volcano Observatory (HVO) on Sunday, June 28, at 8:39 p.m., HST. The earthquake was located about 4 km (2 miles) southeast of Makawao at a depth of 30 km (18.6 miles).

The U.S. Geological Survey has received nearly 600 felt reports since the earthquake occurred (http://earthquake.usgs.gov/eqcenter/dyfi/). Weak shaking was felt throughout the islands of Maui, Moloka‘i, Lāna‘i, and Kaho‘olawe, as well as from parts of northwest Hawai‘i Island and O‘ahu. The USGS received no reports of damage.

In the past 5 years, only one other earthquake of similar size has occurred beneath Maui. On April 4, 2008, a magnitude-3.1 earthquake was located 3 km (1.8 miles) northwest of Pa‘ia at a depth of 10 km (6.2 miles).

Sunday's earthquake is believed to be the result of flexure of the Earth's lithosphere to accommodate the weight of Haleakalā Volcano. Similar adjustments produced the Kīholo Bay and Māhukona earthquakes in 2006. The earthquake most likely was not directly associated with magma or eruptive processes.

Daily updates about ongoing eruptions, recent images and videos of summit and East Rift Zone volcanic activity, maps, and data about recent earthquakes in Hawaii are posted on the HVO website at https://volcanoes.usgs.gov/observatories/hvo

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