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Mauna Loa Morning Update - Lava crosses access road, very active NERZ fissures

8:02 PM · Nov 29, 2022

Four lava flows lobes have now crossed the Mauna Loa Weather Observatory Road and lava is working it way towards Saddle Road. Andrew Hara reports that the fissure complex on the NERZ that includes Fissures 3 & 4 is very active, with fountaining occurring. It has become very difficult to identify where one fissure ends and another begins, with several fissures and lava flows active and in a close proximity. ------ USGS-HVO Morning Update Below ------ U.S. Geological Survey - The Northeast Rift Zone eruption of Mauna Loa continues, with several fissures and lava flows active. Several lava flows are traveling in a northeast direction. The longest and largest lava flow is issuing from fissure 3. This lava flow crossed the Mauna Loa Weather Observatory Road at approximately 8 p.m. yesterday evening, November 29, and the flow front was located approximately 6 miles (10 km) from Saddle Road at 7 a.m. HST this morning. This morning, fountains at fissure 3 are up to 25 m (82 ft) and fountains are fissure 4, which formed at approximately 7:30 p.m. HST last night, were 5-10 m (16-33 ft) tall. There is no active lava within Moku'āweoweo caldera, and there is no lava erupting from the Southwest Rift Zone. All lava flows are on the northeast flank of Mauna Loa. 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 North. ---- Media - Timelapse taken from Mauna Kea last night, via MKcam ----

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