Eruptions continue at Kilauea Volcano’s summit and East Rift Zone. No strong changes to the eruptions are noted. The lava flow to the southeast of Pu’u’O’o continues to advance and spread. It currently poses no threat to nearby communities. The lava lake at Halema’uma’u crater continues to circulate and spatter, and the surface of the lava lake within the vent, while showing small fluctuations, remains roughly 30m (~100ft) below the adjacent crater floor. Low rates of seismicity are noted across the volcano, and long-term deformation trends show continued inflation beneath the summit and uppermost Southwest Rift Zone. The June 27th lava flow northeast of Pu’u’O’o is no longer active.
Since yesterday morning at roughly 0800h Hst, Kilauea summit tiltmeters have been recording a deflationary trend that looks to be the deflationary stage of a summit DI event. Thus far, the Uwekahuna vault tiltmeters have registered ~2 microradians of deflationary tilt, and the rate of deflation looks to have slowed considerably this morning. The summit lava lake at Halema?uma?u continues to circulate and spatter, and estimates derived from HVO webcams suggest a small drop in lava lake level associated with the ongoing deflation. HVO web cameras show the lake surface remaining roughly 30m (~100ft) below the adjacent floor of Halema’uma’u. Low rates of seismicity in the summit caldera region are noted, with minor fluctuations in amplitudes of volcanic tremor related to variations in lave lake circulation and spattering. VLP seismic excitation looks to be associated with apparent collapse of a small section of the south-southwest edge of the Overlook vent yesterday afternoon at 1526h Hst. Sulfur dioxide emissions from the summit vent over the past week ranged from 3,500 to 7,300 metric tons/day, with slightly increased levels recorded during the last two days.
HVO webcams are showing persistent activity at Pu’u’O’o. There are no significant changes in ground surface deformation or seismic activity at Pu’u’O’o. Sulfur dioxide emission rate from all East Rift Zone vents when last measured on June 13 was about 390 metric tons/day.
Lava Flow Observations:
The active lava flow southeast of Pu’u’O’o continues to advance and spread. Bright incandescence is visible in the overnight webcam views of the active lava flow field, marking several skylights along the upper part of the tube system supplying lava to the front part of the flow, as well as surface activity farther away from Pu’u’O’o. The June 27th lava flow northeast of Pu’u’O’o is no longer active.
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June 21 , 2016. Kilauea , Hawai :
19°25’16” N 155°17’13” W,
Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Source : HVO
Photo : HVO , Bruce Omori