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Volcano Watch: Kilauea activity update for February 25, 2016


Time-lapse thermal image movie of Halemaumau Overlook Vent. February 18-25, 2016. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Overlook Vent. February 18-25, 2016. Images courtesy of USGS/HVO


Time-lapse movie of Halemaʻumaʻu Overlook Vent from Hawaiian Volcano Observatory. February 18-25, 2016. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Crater looking Southwest. February 18-25, 2016. Images courtesy of Hawaii Volcanoes National Park


Time-lapse movie of KÄ«lauea Caldera from Hawaiian Volcano Observatory. February 18-25, 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. During the past week, the summit lava lake level varied between about 30 and 56 m (100–185 ft) below the vent rim within Halema‘uma‘u Crater. On the East Rift Zone, scattered lava flow activity remains within about 6 km (4 mi) of Puʻu ʻŌʻō and is not currently threatening nearby communities.

Mauna Loa is not erupting. Seismicity remains elevated above long-term background levels, with earthquakes continuing to occur mostly beneath the volcano’s upper Southwest Rift Zone and southern caldera region at depths of less than 5 km (3 mi). Deformation related to inflation of a magma reservoir beneath the summit and upper Southwest Rift Zone of Mauna Loa, with inflation recently occurring mainly in the southwestern part of the magma storage complex, continues.

Two earthquakes were reported felt on the Island of Hawai‘i in the past week. On Wednesday, February 24, 2016, at 6:00 p.m., HST, a magnitude-3.7 earthquake occurred 3.8 km (2.4 mi) west of Kīlauea summit at a depth of 6.6 km (4.1 mi). On Friday, February 19, 2016, at 10:41 a.m., HST, a magnitude-2.8 earthquake occurred 3.9 km (2.4 mi) south of Kīlauea summit at a depth of 2.5 km (1.5 mi).

Please visit the HVO website (http://hvo.wr.usgs.gov) for past Volcano Watch articles, KÄ«lauea daily eruption updates, Mauna Loa weekly updates, volcano photos, recent earthquakes 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 multi-image movie of Pu’u ‘O’o Crater. February 18-25, 2016. Images courtesy of USGS/HVO


Time-lapse movie of Pu’u ‘O’o Crater North Flank from the North Rim. February 18-25, 2016. Images courtesy of USGS/HVO


Time-lapse movie from images gathered from a temporary thermal camera looking into Pu’u ‘O’o Crater. The temperature scale is in degrees Celsius up to a maximum of 500 Celsius (932 Fahrenheit) for this camera model, and scales based on the maximum and minimum temperatures within the frame. Thick fume, image pixel size and other factors often result in image temperatures being lower than actual surface temperatures. February 18-25, 2016. Images courtesy of USGS/HVO

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