FVAU0190 at 21:45 UTC, 24/06/17 from ADRM [less]

Sinabung (Sumatra, Indonesia): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA TO FL100 MOV E AT 24/1425Z. [less]

FVAG01 at 20:27 UTC, 24/06/17 from SABM [less]

FVAK22 at 17:08 UTC, 24/06/17 from PAWU [less]

FVAU0405 at 15:09 UTC, 24/06/17 from ADRM [less]

FVAU0300 at 14:43 UTC, 24/06/17 from ADRM [less]

On 6 June the group completed their hike to the summit in dry weather (the people coming up in the next two days were not so lucky) but had to wait a few hours for a first glance onto the red hot lava lake until the clouds around the stratovolcano´s summit and the thick volcanic gasses inside the caldera had temporarily lifted. The next 2 days (7 and 8 June) visibility into the caldera was usually best in the mornings and at intervals during the night, with more clear circumstances in the early morning and right through to dawn and sunrise on the 8th of June. The world´s largest lava lake (about 220 m across) is situated some 400 m below the rim of Nyiragongo´s summit caldera (a diameter of 1.2 km).
When visible, the surface of the active lava lake was continuously in motion as exploding gas bubbles create small degassing fountains that recycle the cold black crust back into the red hot liquid lava. Strong degassing also occurred from the edges of the lava lake, the 2016 hornito and along the southern fracture zone. [less]

FVXX20 at 13:36 UTC, 24/06/17 from KNES [less]

FVXX22 at 13:14 UTC, 24/06/17 from KNES [less]

The main pulse of the eruption which lasted about 10 minutes began at 00:49 UTC (16:49 local time) this morning and generated an ash and steam plume that quickly rose to 36,000 ft (12 km) altitude as pilots reported that were en route in the area and saw the cloud.
The ash plume moved east, passing over Akutan and the North Pacific Ocean before dissipating. No ash falls were reported from ground locations. [less]

Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ...more [read all]

Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: ...more [read all]

Volcanic Ash Advisory Center Anchorage (VAAC) issued the following report: ...more [read all]

Volcanic Ash Advisory Center Anchorage (VAAC) issued the following report: ...more [read all]

Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: ...more [read all]

Klyuchevskoy (Kamchatka): Mild, strombolian-type eruptions continue to occur at the summit vent of the volcano. ...more [read all]

During 14-15 June gas emissions at Turrialba sometimes contained ash and rose no higher than 300 m above the crater. ...more

Activity at the volcano remains elevated. A series of explosions and partial collapses of the overspilling lava tongues with pyroclastic flows occurred during the past week generating ash plumes that rose 3-6.4 km (10,000-21,000 ft) a.s.l. and drifted in multiple directions.

The volcano continues to produce very frequent explosions of small to moderate size although the intensity has decreased a little bit, according to the latest official reports. ...more [read all]

Small phreatic eruptions continue to occur from the volcano's crater lake. Ash emissions less than 1 km high and mostly drifting N were seen frequently during breaks in weather by observers near the crater: on 16 June, at 18 June at 13:40 on 18 June, and at 11:00 and 13:50 on 20 June. ...more

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