Sangeang Api (Indonesia): Eruptive activity continues in the form of low-level ash emissions. VAAC Daarwin reported a volcanic ash plume at estimated 10,000 ft (3 km) altitude extending more than 100 km to the west.
Dukono (Halmahera): Ash plumes from strong strombolian activity continue to show up as alerts from VAAC Darwin. A plume extending 50 nautical miles to the north was seen last evening. Its height was at estimated 7,000 ft (2.1 km) altitude.
Pavlof (Alaska Peninsula, USA): After a phase of intense eruptive activity yesterday, the volcano continues to erupt lava fountains and flows, along with associated ash plumes, but has decreased its activity.
Starting around 23:00 local time yesterday evening, the effusion rate increased rapidly, lava fountaining at the summit reached 200 m height and the lava flows on the northern flank became more alimented. As a result of violent interaction between lava and ice/snow, pyroclastic flows formed and descended on the flanks. An associated ash plume rose to approx. 24,000 ft (7 km) altitude and drifted more than 70 km to the east.
Today, this activity continues but at reduced pace. AVO lowered the aviation color code from RED to ORANGE: “Although the eruption of Pavlof continues, seismic tremor has deceased over the past 12 hours and has remained relatively steady throughout the day at a much lower level than that of yesterday.
Recent satellite data and web camera views of the eruption plume indicate that there are now two distinct parts of the plume. The part of the plume that reaches high above the volcano appears to be mainly steam and gas with minor ash present, extending south of the volcano. Additionally, pyroclastic flow activity on the north flank is producing diffuse ash emissions that result in areas of hazy air, with variable concentrations of ash below 10,000 ft.
Ubinas (Peru): A relatively strong explosion occurred yesterday morning at the volcano, followed by ongoing ash emissions. Overall, the activity at the volcano has been showing again an increasing trend.
The ash plume was approx. 3 km high and rose to 10 km altitude, then drifted east:
More at Volcano Discovery: Volcanoes Today, 4 Jun 2014: Pavlof, Dukono, Ubinas, Sangeang Api