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Volcano Watch: Kilauea activity update for October 27, 2016


Time-lapse movie of Halemaʻumaʻu Overlook Vent from Hawaiian Volcano Observatory. October 20-27, 2016. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Overlook Vent. October 20-27, 2016. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Crater looking Southwest. October 20-27, 2016. Images courtesy of Hawaii Volcanoes National Park


Time-lapse movie of Kīlauea Caldera from Hawaiian Volcano Observatory. October 20-27, 2016. Images courtesy of USGS/HVO

(Activity updates are written by scientists at the U.S. Geological Survey’s Hawaiian Volcano Observatory.)

Kīlauea continues to erupt at its summit and East Rift Zone. This past week, the summit lava lake level varied between 10 and 16 m (33–52 ft) below the vent rim. The 61g lava flow continued to enter the ocean near Kamokuna. The lava flow does not pose an immediate threat to nearby communities.

Mauna Loa is not erupting. During the past week, earthquakes occurred primarily in the south caldera and upper Southwest Rift Zone at depths less than 5 km (3 mi). Additional earthquakes occurred in the Ka‘ōiki area of the east flank between Kīlauea and Mauna Loa, mostly in the 5–11 km (3–7 mile) depth range. GPS measurements continue to show deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone, with inflation occurring mainly in the southwestern part of the magma storage complex.

Two earthquakes were reported felt on the Island of Hawaiʻi this past week. On October 27, at 12:08 p.m., HST, a magnitude-3.7 earthquake occurred 5.5 km (3.4 mi) west of Kīlauea’s summit at a depth of 7.8 km (4.9 mi). On October 26, at 10:37 a.m., HST, a magnitude-3.6 earthquake occurred 16.8 km (10.5 mi) south of Kīlauea’s summit at a depth of 26.6 km (16.5 mi).

Please visit the HVO website (hvo.wr.usgs.gov) for past Volcano Watch articles, Kīlauea daily eruption updates, Mauna Loa weekly updates, volcano photos, recent earthquakes info, and more; call for summary updates at 808-967-8862 (Kīlauea) or 808-967-8866 (Mauna Loa); email questions to askHVO@usgs.gov.

October 27, 2016 Rainy Day Flow from Mick Kalber on Vimeo.

Video courtesy of Tropical Visions Video with air transportation by Paradise Helicopters.

This map shows recent changes to Kīlauea’s East Rift Zone lava flow field. The area of the active flow field as of September 20 is shown in pink, while widening and advancement of the active flow as mapped on October 19 from satellite imagery is shown in red. Older Puʻu ʻŌʻō lava flows (1983–2016) are shown in gray.

This map shows recent changes to Kīlauea’s East Rift Zone lava flow field. The area of the active flow field as of September 20 is shown in pink, while widening and advancement of the active flow as mapped on October 19 from satellite imagery is shown in red. Older Puʻu ʻŌʻō lava flows (1983–2016) are shown in gray.

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