Volcano activity overview : Shiveluch volcano is a 3283m (10770 feet for our US viewers) high andesitic volcano which is the largest within the Kliuchevskaya volcano group in Kamchatka. It is the most active in the group (at least 60 eruptions in the last 12000 years have occurred) and has been erupting often within 2011 sending ash between 3 and 8 km into the air. The latest set of activity started on June 10, 2011

UPDATE: 17:22 UTC : A Russian TV station has reported yesterday from this Eruption with some video footage from the eruption. Russian volcanoes are not often videotaped.

UPDATE: 13:17 UTC
Shiveluch volcano
© volkstat.ru Shiveluch volcano during an earlier eruption
For Shiveluch, the AVIATION COLOR CODE IS ORANGE from KVERT in Russia. Explosive-extrusive eruption of the volcano continues. Ash explosions up to 32,800 ft (10 km) ASL could occur at any time. Ongoing activity could affect international and low-flying aircraft. Moderate seismic activity is also occurring, and ash plumes rose up to 10000m above sea level on June 15. This is in addition to the ash plumes today.
According to visual data, moderate gas-steam activity of the volcano was observing on June 10 and 12 with a thermal anomaly also registered over the lava dome. Cloud obscured measurements on the other days. According to satellite data, a gas-steam plume containing small amount of ash extended about 26km to the north-west from the volcano on June 10.

UPDATE: 09:38 UTC : Shiveluch volcano is a 3283m (10770 feet for our US viewers) high andesitic volcano which is the largest within the Kliuchevskaya volcano group in Kamchatka. It is the most active in the group (at least 60 eruptions in the last 12000 years have occurred) and has been erupting often within 2011 sending ash between 3 and 8 km into the air.

Sheveluch Volcano 2
© UnknownShiveluch/Sheveluch Volcano (5th June 2011)
The Smithsonian Institute says that "The Molodoy Shiveluch lava dome complex was constructed during the Holocene within the large horseshoe-shaped caldera; Holocene lava dome extrusion also took place on the flanks of Stary Shiveluch (around 65000 years old). Widespread tephra layers from these eruptions have provided valuable time markers for dating volcanic events in Kamchatka. Frequent collapses of dome complexes, most recently in 1964, have produced debris avalanches whose deposits cover much of the floor of the breached caldera. "

UPDATE: 09:32 UTC : A volcano has erupted in Kamchatka in the last few hours, sending ash up 10000m in the air, according to Russian scientists. It is unclear which volcano is erupting, however, it appears to be Sheveluch (also Shiveluch). Further advisories are expected to come from the VAAC at some point.

The VAAC in Anchorage already had an orange alert on Shiveluch, having minor eruptions in the past month. Karymsky and Kizimen are also currently at orange.