A moderate activity of the volcano continues. Ash explosions up to 19,700-26,240 ft (6-8 km) a.s.l. could occur at any time. Ongoing activity could affect international and low-flying aircraft.
According to visual data from Paramushir Island, a gas-steam plume containing ash extended to the south-west from the volcano on 6 March.Satellite data by KVERT showed an intensive thermal anomaly over the volcano all week, a gas-steam plume containing ash extended for about 90 km to the south-west from the volcano on 6 March.
The highest and northernmost volcano of the Kuril Islands, 2285-m-high Alaid is a symmetrical stratovolcano when viewed from the north, but has a 1.5-km-wide summit crater that is breached widely to the south. Alaid is the northernmost of a chain of volcanoes constructed west of the main Kuril archipelago and rises 3000 m from the floor of the Sea of Okhotsk. Numerous pyroclastic cones dot the lower flanks of basaltic to basaltic-andesite Alaid volcano, particularly on the NW and SE sides, including an offshore cone formed during the 1933-34 eruption. Strong explosive eruptions have occurred from the summit crater beginning in the 18th century. Reports of eruptions in 1770, 1789, 1821, 1829, 1843, 1848, and 1858 were considered incorrect by Gorshkov (1970). Explosive eruptions in 1790 and 1981 were among the largest in the Kuril Islands during historical time.
March 13 , 2016. Alaid , Kouriles Islands , Russia:
50.86 N, 155.56 E;
Elevation 7672 ft (2339 m)
Aviation Color Code is ORANGE
Source : Kvert, GVP.
Photo : Sergey Golodnikov