Time-lapse thermal image movie of Halemaumau Overlook Vent. October 19-26, 2017. Images courtesy of USGS/HVO
Time-lapse movie of Halemaumau Overlook Vent. October 19-26, 2017. Images courtesy of USGS/HVO
Time-lapse movie of Halemaʻumaʻu Overlook Vent from Hawaiian Volcano Observatory. October 19-26, 2017. Images courtesy of USGS/HVO
Time-lapse movie of KÄ«lauea Caldera from Hawaiian Volcano Observatory. October 19-26, 2017. Images courtesy of USGS/HVO
Time-lapse movie of Halemaumau Crater looking Southwest. October 19-26, 2017. Images courtesy of Hawaii Volcanoes National Park
(Activity updates are written by scientists at the U.S. Geological Survey’s Hawaiian Volcano Observatory.)
This past week, KÄ«lauea Volcano’s summit lava lake level fluctuated with summit inflation and deflation, ranging about 30–36 m (98–118 ft) below the vent rim. On the East Rift Zone, the 61g flow remained active, with lava reaching the Kamokuna delta and surface breakouts downslope of Pu‘u ‘Ō‘Å. The 61g flows do not pose an immediate threat to nearby communities.
Mauna Loa is not erupting. Small-magnitude earthquakes occurred beneath the summit caldera and upper Southwest Rift Zone, mostly at depths less than 5 km (3 mi), with some deeper events at depths of 5–13 km (3–8 mi). GPS and satellite radar measurements continue to show deformation related to inflation of a magma reservoir beneath the summit caldera and upper Southwest Rift Zone. No significant changes in volcanic gas emissions were measured.
Two earthquakes with three or more felt reports occurred on the Island of Hawaiʻi during the past week: A magnitude-3.1 earthquake 5 km (3 mi) south of Volcano at 2 km (1 mi) depth on October 21, at 12:01 a.m. HST, and a magnitude-3.1 earthquake 4 km (2 mi) southeast of Leilani Estates at 2 km (1 mi) depth on October 19, at 12:09 p.m. HST.
Please visit the HVO website (https://volcanoes.usgs.gov/hvo) for past Volcano Watch articles, volcano updates and photos, recent earthquake info, and more. Call for summary updates at 808-967-8862 (KÄ«lauea) or 808-967-8866 (Mauna Loa). Email questions to askHVO@usgs.gov.
Time-lapse movie of Pu’u ‘O’o Crater. October 19-26, 2017. Images courtesy of USGS/HVO
Time-lapse movie from a camera positioned on the southeast flank of PuÊ»u ʻŌʻÅ, looking toward the active flow advancing to the southeast. The breakout point is at the left edge of the image, and the mid-field skyline at the right is roughly coincident with the top of the pali. October 19-26, 2017. Images courtesy of USGS/HVO
Time-lapse image movie from a research camera positioned on Holei Pali, looking east towards Lava Flow 61G and Kalapana. October 19-26, 2017. Images courtesy of USGS/HVO