Kilauea continues to erupt at both the summit, where there is a circulating lava lake, and from its East Rift Zone, where surface lava flows are active northeast of the Pu’u ‘O’o vent. The East Rift Zone lava flow currently poses no threat to nearby communities. Summit tilt has changed very little during the past 24 hours; earthquake rates and seismic tremor have not changed significantly in the past day.
Summit tiltmeters recorded very little change in tilt during the past day. As of Tuesday morning, the summit lava lake level was 47 meters (154 ft) below the current Halema’uma’u crater floor. Seismic activity across the volcano has not changed significantly during the past day. Fluctuations in summit tremor amplitudes are related to spattering along the edges of the lava lake. The average sulfur dioxide emission rates during the past week ranged between 1,400 and 4,500 metric tons/day; the most recent average emission rate on April 19 was about 4,500 metric tons/day.
Pu’u ‘O’o Observations:
There were no observable changes at Pu’u ‘O’o during the past day. Outgassing continues from the spatter cones on the crater floor. A tiltmeter on the north flank of Pu’u ‘O’o recorded only slight inflationary tilt during the past day. For the past several months, GPS instruments that span Pu’u ‘O’o had shown the cone was spreading, which suggests the magma system beneath the vent was pressurizing; the pronounced deflationary episode April 5-9 at Pu’u ‘O’o, however, interrupted this long-term trend. The sulfur dioxide emission rate from all East Rift Zone vents was about 300 metric tons/day when last measured on April 6.
June 27th Lava Flow Observations:
The webcam images continue to show small breakouts scattered northeast of Pu’u ‘O’o, where they have been occurring for the past several months. This pattern is consistent with observations of an HVO field crew visiting the flow field April 12. The crew saw very minor expansion of the northern edge of the flow field since the previous visit weeks ago. As of the 12 April field visit the most distal breakouts were about 5.7 km (3.5 mi) northeast of Pu’u ‘O’o.
April 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 : Bruce Omori