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Volcano Watch: Kilauea activity update for April 28, 2016


Time-lapse thermal image movie of Halemaumau Overlook Vent. April 21-28, 2016. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Overlook Vent. April 21-28, 2016. Images courtesy of USGS/HVO


Time-lapse movie of Halemaʻumaʻu Overlook Vent from Hawaiian Volcano Observatory. April 21-28, 2016. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Crater looking Southwest. April 21-28, 2016. Images courtesy of Hawaii Volcanoes National Park


Time-lapse movie of Kīlauea Caldera from Hawaiian Volcano Observatory. April 21-28, 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 31.5 and 39 m (103–128 ft) below the vent rim within Halema‘uma‘u Crater. On the East Rift Zone, scattered lava flow activity remained within about 5.7 km (3.5 mi) northeast of Puʻu ʻŌʻō and was not threatening nearby communities.

Mauna Loa is not erupting. Seismicity remains elevated above long-term background levels, but no significant changes were recorded during the past week. Deformation data show continued 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.

One earthquake was reported felt on the Island of Hawaiʻi in the past week. On Saturday, April 23, 2016, at 10:05 p.m., HST, a magnitude-3.2 earthquake occurred 3.1 km (1.9 mi) southwest of Kīlauea Summit at a depth of 2.6 km (1.6 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 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. April 21-28, 2016. Images courtesy of USGS/HVO


Time-lapse movie of Pu’u ‘O’o Crater North Flank from the North Rim. April 21-28, 2016. Images courtesy of USGS/HVO

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