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Kīlauea & Maunaloa Update, July 8, 2021

3:07 AM · Jul 9, 2021

Kīlauea's volcanic earthquakes continue while its inflation center shifts, and Maunaloa's earthquake pattern remains unchanged from recent weeks. We examine publicly available monitoring data available for both volcanoes courtesy of the USGS Hawaiian Volcano Observatory and discuss live viewer questions, while also including a couple of bonus topics this week. First, we examine this past week's magnitude 5.2 and 4.2 earthquakes north of the island, and discuss their possible association with either the more traditional tectonic flexure, or the less-known Molokai Fracture Zone that generated a magnitude 7.5 earthquake on Lanaʻi in 1871 and a magnitude 6.8 near Maui in 1938. Second, playing off this week's USGS Volcano Watch on the 1975 Maunaloa eruption, we recap the second-to-most-recent eruption of the mountain in greater detail, with photographs, maps, and a summary of recent articles. This program is brought to you in part by a grant from the Hawaiʻi Island Strong Fund of the Hawaiʻi Community Foundation in partnership with the County of Hawaiʻi, and from smaller donations from viewers like you.

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