19°25’16” N 155°17’13” W,
Summit Elevation 4091 ft (1247 m)
Current Volcano Alert Level: WATCH
Current Aviation Color Code: ORANGE
Eruptive activity continues at Kilauea Volcano’s summit and East Rift Zone. At around 6:50 a.m. a lava flow broke out from the northeast flank of Pu’u ‘O’o cone; a second flow also broke out on the east flank of the cone. At the summit, inflationary tilt continued through much of yesterday; however, little change in tilt has occurred overnight. The summit lava lake level has risen slightly since yesterday, and spattering has been intermittently visible from the Jaggar overlook this morning. Scattered lava flow activity continued on the June 27th lava flow field within about 5.8 km (3.6 mi) northeast of Pu’u ‘O’o. None of the Pu’u ‘O’o flows currently pose a threat to nearby communities. A small flurry of deep earthquakes has occurred on the lower part of the southwest rift zone of Kilauea over the past several days. Earthquakes in this area of the rift zone are observed intermittently, and do not represent unusual behavior for Kilauea.
The lava lake within the Halema’uma’u Overlook crater remained active, with the lava lake level measured at around 23 m (75 ft) below the Halema’uma’u crater floor this morning, high enough to view intermittent spattering from the Jaggar overlook. Inflationary tilt continued through much of yesterday, however little change in tilt has occurred since around 9 p.m. last night. Tremor fluctuations associated with lava lake spattering continued. Sulfur dioxide emissions from the summit vent ranged from 4,100 to 7,000 t/d during the past week. These values are typical for active pond conditions. Data from GPS networks and interferometric satellite radar (InSAR) show continued long-term inflation of the summit and upper Southwest Rift Zone magma reservoirs.
Pu’u ‘O’o Observations:
At around 6:50 a.m., in concert with sharp deflationary tilt at Pu’u ‘O’o, two lava flows broke out from the flanks of the cone. One is on the northeast flank, approximately 250 m (0.15 mi) from the rim of the cone, heading toward the northwest. The other flow is on the east flank of the cone, approximately 500 m (0.3 mi) from the rim of the cone, heading toward the southeast. At around 8:30 a.m., during an HVO overflight, the flow on the northeast flank was roughly 1 km (0.6 mi) long, and the flow on the east flank was around 700 m (0.4 mi) long, but neither has extended beyond the existing flow field. Typical of new breakouts, the initial flow activity has been vigorous, but neither flow is currently threatening any nearby communities. The floor of Pu’u ‘O’o crater has subsided slightly with the new flow activity. Persistent glow from spatter cones within the crater continues. No change in seismic activity has been noted, and remains low and steady. The sulfur dioxide emission rate from all East Rift Zone vents was about 300 metric tons/day when last measured on May 10.
June 27th Lava Flow Observations:
In addition to the new lava flows on the flanks of Pu’u ‘O’o, surface flow activity on the June 27th flow field continues, with small breakouts scattered northeast of Pu’u ‘O’o where they have been occurring for the past several months. The most distant breakouts were about 5.8 km (3.6 mi) northeast of Pu’u ‘O’o. The flows are not currently threatening any nearby communities.
May 25 , 2016. Kilauea , Hawai :
Source : HVO
Photo : HVO , Bruce Omori.