Potential hazards are caused by ash plumes, ash falls, lahars, clouds of sulphuretted hydrogen and sulphureous gas.

Ash plumes (up to 5 km ASL) of the volcano are dangerous to airport in Severo-Kurilsk and local airlines.

Ash falls possible at:
Severo-Kurilsk (7 km to the east-south-east from the volcano)
Ozernovskiy (90 km to the north-north-east)

The complicated volcano belongs to the type of “Somma-Vesuvy” and is nested on the volcanic ridge of Vernadsky. Somma 3-5 km in diameter is destroyed. The summit of the central cone extending in the meridional direction has three adjoining craters with diameters 250-300 m and depths 70-100 m. There are a lot of flank craters with centers of fumarolic and hydrothermal activity.

The volcano is located in the northern part of Paramushir Island, 7 km to the west-north-west from Severo-Kurilsk, in the northern part of Vernadsky ridge.