Askja (Central Iceland): (8 Sep) The Icelandic Meteorological Office (IMO) reported that GPS observations and ground deformation maps from Sentinel-1 satellite data detected that the volcano began to inflate at the beginning of August 2021. The uplift signal is centered on the western edge of Öskjuvatn, close to Ólafsgígar, and corresponds to ~5 cm/month of vertical motion. Geodetic modeling indicates that the source of this inflation is located at a depth of approximately 3 km and corresponds to a volume change of approximately 0.001 km³/month.
The cause of such inflation is uncertain, but most likely it is due to a new batch of magma as a larger gas bubble rose towards the surface inside the magma-filled conduit.
Source: Icelandic Meteorological Office volcano activity update 8 September 2021
Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20210908/1514Z FL090 EXTD E OBS VA DTG:08/1510Z
Ibu (Halmahera, Indonesia): (7 Sep) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 6000 ft (1800 m) altitude or flight level 060 .
The full report is as follows: VA OBS TO FL060 MOV NW AT 07/2250Z OBS VA DTG:07/2250Z to 6000 ft (1800 m)
Semisopochnoi (United States, Aleutian Islands): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Anchorage warned about a volcanic ash plume that rose up to estimated 10000 ft (3000 m) altitude or flight level 100 and is moving at 25 kts in ESE direction.
The full report is as follows: SMALL VA ERUPTIONS CONTINUE. to 10000 ft (3000 m)
…8 Sep:
The explosive eruption of the volcano continues from the Mount Cerberus crater.
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.“
… [read more]
Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows: OCNL VA EMS. to 15000 ft (4600 m)
Sangay (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA CLDS OBSD.
Reventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows: ONGOING VA EMS. to 15000 ft (4600 m)
Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 24000 ft (7300 m) altitude or flight level 240 and is moving at 20 kts in E direction.
The full report is as follows: continuous ash emissions to 24000 ft (7300 m)
Nevados de Chillán (Central Chile): (8 Sep) Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: UNABLE TO DETECT
Volcano Activity Summary for 8 Sep 2021:
