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Volcano Watch: Kilauea activity update for August 4, 2016


Time-lapse movie of Halemaumau Overlook Vent. July 28-August 4, 2016. Images courtesy of USGS/HVO


Time-lapse thermal image movie of Halemaumau Overlook Vent. July 28-August 4, 2016. Images courtesy of USGS/HVO


Time-lapse movie of Halemaʻumaʻu Overlook Vent from Hawaiian Volcano Observatory. July 28-August 4, 2016. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Crater looking Southwest. July 28-August 4, 2016. Images courtesy of Hawaii Volcanoes National Park


Time-lapse movie of Kīlauea Caldera from Hawaiian Volcano Observatory. July 28-August 4, 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 26 m and 41 m (85–135 ft) below the vent rim within Halema‘uma‘u Crater. On the East Rift Zone, the “61g” flow continued to advance down the south flank of the volcano and flow into the ocean. The lava flow does not pose an immediate threat to nearby communities.

Mauna Loa is not erupting. In the past week, earthquakes have occurred mostly in the south caldera and upper Southwest Rift Zone at depths less than 5 km (3 mi), with the overall seismicity rate about the same as last week, but still elevated relative to the long-term background rate. Global Positioning System (GPS) measurements 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.

One earthquake was reported felt on the Island of Hawaiʻi this past week. On Saturday, July 30, at 11:12 a.m., HST, a magnitude-3.2 earthquake occurred 11.8 km (7.3 mi) southeast of Mauna Kea’s summit at a depth of 21.0 km (13.0 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


Time-lapse multi-image movie of Pu’u ‘O’o Crater. July 28-August 4, 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. July 28-August 4, 2016. 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. July 28-August 4, 2016. Images courtesy of USGS/HVO

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