An intensive thermal anomaly was detected over Alaid volcano on March 22, 02:41 UTC (Aqua MODIS). Weak ash emission extended about 60 km to the north-west from the volcano was observed on satellite image (Aqua MODIS) on March 22, 02:41 UTC.
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.
Distance of ash plume/cloud of the volcano: 39 mi (63 km)
Direction of drift of ash plume/cloud of the volcano: NW / azimuth 316 deg
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 22 , 2016. Alaid , Kouriles Islands , Russia :
Current Aviation Color Code: ORANGE
Volcano Location: N 50 deg 51 min E 155 deg 33 min
Summit Elevation: 7671.92 ft (2339 m)
Source : Kvert , GVP
Photo : L. Kotenko, IVS FEB RAS