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Volcano Watch: Kilauea activity update for July 2, 2015


Time-lapse movie of Halemaumau Overlook Vent. June 25-July 2, 2015. Images courtesy of USGS/HVO


Time-lapse thermal image movie of Halemaumau Overlook Vent. June 25-July 2, 2015. Images courtesy of USGS/HVO


Time-lapse movie of Halemaʻumaʻu Overlook Vent from Hawaiian Volcano Observatory. June 25-July 2, 2015. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Crater from the south rim. June 25-July 2, 2015. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Overlook Vent from the West Rim of Halemaumau Crater. June 25-July 2, 2015. Images courtesy of USGS/HVO


Time-lapse movie of Halemaumau Crater looking Southwest. June 25-July 2, 2015. Images courtesy of Hawaii Volcanoes National Park


Time-lapse movie of Kīlauea Caldera from Hawaiian Volcano Observatory. June 25-July 2, 2015. Images courtesy of USGS/HVO

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

Kīlauea’s summit lava lake level, which fluctuates in response to summit inflation and deflation, remained fairly steady at 45 m (148 ft) below the vent rim for much of the past week, but dropped to 47 m (155 ft) on July 1, where it remained as of July 2.

Kīlauea’s East Rift Zone lava flow continues to feed widespread breakouts northeast of Puʻu ʻŌʻō. Active flows are slowly covering and widening the flow field, but remain within about 8 km (5 mi) of Puʻu ʻŌʻō.

There were two earthquakes reported felt on the Island of Hawai‘i during the past week. On Saturday June 27, 2015, at 10:10 p.m., HST, a magnitude-5.2 earthquake occurred 11 km (7 mi) southeast of Kīlauea Summit at a depth of 8.5 km (5.3 mi), and at 10:54 p.m., a magnitude-3.2 earthquake occurred 13 km (8.5 mi) southeast of Kīlauea Summit at a depth of 8.8 km (5.5 mi).

Please visit the HVO website (hvo.wr.usgs.gov) 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 askHVO@usgs.gov


Time-lapse multi-image movie of Pu’u ‘O’o Crater. June 25-July 2, 2015. 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. June 25-July 2, 2015. Images courtesy of USGS/HVO


Time-lapse movie of Pu’u ‘O’o Crater North Flank from the North Rim. June 25-July 2, 2015. Images courtesy of USGS/HVO

This map shows recent changes to Kīlauea’s active East Rift Zone lava flow field. The area of the flow on June 19 is shown in pink, while widening and advancement of the flow as of June 30 is shown in red. Puʻu ʻŌʻō lava flows erupted prior to June 27, 2014, are shown in gray.

This map shows recent changes to Kīlauea’s active East Rift Zone lava flow field. The area of the flow on June 19 is shown in pink, while widening and advancement of the flow as of June 30 is shown in red. Puʻu ʻŌʻō lava flows erupted prior to June 27, 2014, are shown in gray.

This map overlays a georeferenced thermal image mosaic onto the flow field change map to show the distribution of active and recently active breakouts. The thermal images were collected during a helicopter overflight of the flow field today (June 30). The June 27th flow is outlined in green to highlight the flow margin. The yellow line is the active lava tube. Temperature in the thermal mosaics is displayed as gray-scale values, with the brightest pixels indicating the hottest areas, including active breakouts.

This map overlays a georeferenced thermal image mosaic onto the flow field change map to show the distribution of active and recently active breakouts. The thermal images were collected during a helicopter overflight of the flow field today (June 30). The June 27th flow is outlined in green to highlight the flow margin. The yellow line is the active lava tube. Temperature in the thermal mosaics is displayed as gray-scale values, with the brightest pixels indicating the hottest areas, including active breakouts.


Time-lapse multi-image movie of Mokuʻāweoweo Caldera from the Northwest Rim on Mauna Loa. June 25-July 2, 2015. Images courtesy of USGS/HVO


Video courtesy of Tropical Visions Video with air transportation by Paradise Helicopters.

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