Satellite image of Sarychev Peak on 29 June, day before the eruption (image: Sentinel 2)
SVERT reported that ash emissions were identified in a satellite image today.
An ash plume reached 10,000 ft (3,048 m) altitude and extended about 30 km to the W-NW of the volcano.
Satellite images from 12, 23, 25 and 29 June measured thermal anomalies in the summit crater.
Therefore, the alert level for the volcano was raised to „yellow“ today.
Source: Sakhalin Volcanic Eruption Response Team volcano activity update 30 June 2021