Semisopochnoi volcano (Aleutian Islands): strong ash emissions this morning
Wed, 8 Sep 2021, 04:4204:42 AM | BY: MARTIN
The explosive eruption of the volcano continues from the Mount Cerberus crater.
Large amounts of ash from Semisopochnoi volcano this morning (image: AVO)
Strong short-lived ash emissions, several minutes in duration, are being observed by the Alaska Volcano Observatory's surveillance cameras this morning at about 09:00 local time. Large amounts of ash, judging from the webcam imagery, rose to estimated 12,000 ft (3,7 km) altitude. The Alaska Volcano Observatory cited further: "Additional explosions were detected in seismic and infrasound data but were not observed in web camera images or satellite data due to cloudy conditions."
Sulfur dioxide emissions continue to be observed in satellite data and extended 273 km to the northeast of the volcano.
Continuous periods of low-level ash emissions at the volcano are now in progress, regardless of the events mentioned above.
Source: Alaska Volcano Observatory volcano activity update 8 September 2021