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Volcano Watch: Kilauea activity update for April 16, 2015

Time-lapse thermal image movie of Halemaumau Overlook Vent. April 9-16, 2015. Images courtesy of USGS/HVO

Time-lapse movie of Halemaumau Crater looking Southwest. April 9-16, 2015. Images courtesy of Hawaii Volcanoes National Park

Time-lapse movie of Kīlauea Caldera from Hawaiian Volcano Observatory. April 9-16, 2015. Images courtesy of USGS/HVO

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

Kīlauea’s East Rift Zone lava flow continues to feed three areas of breakouts northeast of Puʻu ʻŌʻō. The front of the breakout farthest downslope was 7.4 km (4.6 mi) from Puʻu ʻŌʻō on Thursday, April 16, based on satellite imagery.

There have been no major changes at Kīlauea’s summit vent, which continues to host an active lava lake. The lava lake level fluctuated between about 30 and 40 m (100–130 ft) below the rim of the Overlook crater during the week.

No earthquakes were reported felt in Hawaii during the past week.

Visit the HVO website ( for past Volcano Watch articles, Kīlauea daily eruption updates and other volcano status reports, current volcano photos, recent earthquakes, and more; call (808) 967-8862 for a Kīlauea summary update; email questions to

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 16, 2015. Images courtesy of USGS/HVO

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