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Update at 4:55pm HST from USGS-HVO on Mauna Loa

4:00 AM · Nov 29, 2022

Hawaiian Volcano Observatory - The eruption of Mauna Loa continues on the Northeast Rift Zone. Three fissures erupted and as of 1:30 PM, only the lowest of the three fissures was active. Estimates of the tallest fountain heights are between 100–200 ft (30 – 60 m), but most are a few yards (meters) tall. The fissures sent lava flows to the northeast and parallel to the rift zone. Lava flows from the two higher fissures moved downslope but stalled about 11 miles (18 km) from Saddle Road. Fissure 3 is currently feeding lava flows moving east parallel to the Northeast Rift Zone. These remain at above 10,000 feet elevation and over 10 miles (16 km) away from Saddle Road. We do not expect upper fissures to reactivate. However, additional fissures could open along the Northeast Rift Zone below the current location, and lava flows can continue to travel downslope. There is no active lava within Moku'āweoweo caldera, and there is no lava erupting from the Southwest Rift Zone. We do not expect any eruptive activity outside the Northeast Rift Zone. No property is at risk currently. There is a visible gas plume from the erupting fissure fountains and lava flows, with the plume primarily being blown to the Northwest. Remarks by HVO: Residents with questions about emergency response and resources that may be available to assist those at risk should consult https://hawaii-county-volcano-hazards-hawaiicountygis.hub.arcgis.com/. Hawai‘i Volcanoes National Park has closed the Mauna Loa Road from Kīpukapuaulu and the closure extends to the summit caldera; for more information please see https://www.nps.gov/havo/index.htm. Vog information can be found at https://vog.ivhhn.org/.

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