Monday, July 11,2016 U.S. Geological Survey/Hawaiian Volcano Observatory
Kilauea Volcano Status
Activity Summary: Eruptions continue at Kīlauea Volcano’s summit and East Rift Zone. The lava flow to the southeast of Puʻu ʻŌʻŠcontinues to advance slowly across the coastal plain. The flow does not pose a threat to nearby communities. The lava lake at Halemaʻumaʻu Crater continues to circulate and spatter, although the level has dropped yesterday. The summit tilt reversed and began a deflationary trend during the past day. Low rates of seismicity are observed across the volcano.
Summit Observations: Tiltmeters at the summit of Kilauea recorded a switch to deflationary tilt that began near mid day yesterday. The level of the summit lava lake at Halemaʻumaʻu has since dropped about 10 meters (33 feet), and as of this morning the lake surface stood at 35 meters (115 feet) below the floor of Halema`uma`u. Minor fluctuations in seismic tremor related to variations in lava lake circulation and spattering continue. Sulfur dioxide emissions from the summit vent over the past week ranged from 3,900 to 7,300 metric tons/day.
PuÊ»u ʻŌʻŠObservations: HVO webcams show several incandescent vents on the floor of PuÊ»u ʻŌʻŠcrater, as usual. There were no significant changes in seismic activity at PuÊ»u ʻŌʻÅ. A tiltmeter on the north flank of PuÊ»u ʻŌʻŠbegan to record gentle deflationary tilt beginning mid day Sunday. Sulfur dioxide emission rate from all East Rift Zone vents when last measured on July 8 was about 280 metric tons/day.
Lava Flow Observations: The active lava flow southeast of PuÊ»u ʻŌʻŠcontinued to move across the coastal plain on KÄ«lauea’s south flank although progress has been slow during the past two days. When mapped on Sunday afternoon, the flow front had advanced only 40 m (44 yards) since Saturday’s measurements; the flow front was still about 1 km (0.6 miles) from the ocean. Bright incandescence is visible in the overnight webcam views of the active lava flow field, marking lava tube skylights above the pali.
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