Ebeko (Paramushir Island): (10 Apr) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20210410/0454Z FL090 EXTD SE REPORTED OBS VA DTG:10/0530Z
Sakurajima (Kyushu, Japan): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20210410/0904Z OVER FL070 EXTD S OBS VA DTG:10/0900Z
Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20210410/1203Z FL050 EXTD W OBS VA DTG:10/1200Z
Sinabung (Sumatra, Indonesia): (10 Apr) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 10000 ft (3000 m) altitude or flight level 100 .
The full report is as follows: VA TO FL100 MOV W-NW OBS VA DTG:10/0214Z to 10000 ft (3000 m)
Dukono (Halmahera): (10 Apr) Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: CONTINUOUS VA EMISSION TO FL070 EXT E OBS 10/0230Z
Popocatépetl (Central Mexico): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 19000 ft (5800 m) altitude or flight level 190 and is moving at 5 kts in SW direction.
The full report is as follows: FRQ VA EMS to 19000 ft (5800 m)
Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 and is moving at 10 kts in NE direction.
The full report is as follows: FRQ VA EMS to 14000 ft (4300 m)
Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20000 ft (6100 m) altitude or flight level 200 and is moving at 15 kts in W direction.
The full report is as follows: OCNL VA EMS to 20000 ft (6100 m)
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 and is moving at 10 kts in W direction.
The full report is as follows: OCNL VA EMS OBS to 15000 ft (4600 m)
Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: ONGOING PSBL EMISSIONS
Nevados de Chillán (Central Chile): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 16000 ft (4900 m) altitude or flight level 160 .
The full report is as follows: SPORADIC EMISSION to 16000 ft (4900 m)
Soufrière St. Vincent (West Indies, St. Vincent): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 35000 ft (10700 m) altitude or flight level 350 and is moving at 40 kts in E direction.
The full report is as follows: CONTG EXPLOSIVE ERUPTION to 35000 ft (10700 m)
…9 Apr:
A second strong explosion occurred this afternoon, around 2:45 pm, apparently similar in size as the one from the morning.
Volcanic Ash Advisory Center Washington reports an ash plume reaching 20,000 ft (7 km) altitude and moving SE. Images taken from the island confirm a tall ash column rising at least 4 km according to estimates from the volcano observatory.
Piton de la Fournaise (La Réunion): The eruption that started yesterday evening continues. Its vent, a new eruptive fissure is located on the southern flank of the Enclos depression, just below the old Château Fort cinder cone.
Scientists from the volcano observatory took an overflight in the morning (s. image). According to the observatory, by now only the southern, downhill section of the eruptive fissure is active, producing mild lava fountains from two principal vents and feeding a lava flow. A new spatter rampart is quickly growing into a new cinder cone around the main emission point.
…9 Apr:
A new eruption began this evening at the volcano from a new fissure at the southern flank of the Dolomieu central cone about 1 km from the southern wall of the summit depression or Enclos.
The eruption began around 7 pm local time and had followed a seismic crisis that had begun at 2:57 p.m. local time. Although the onset of lava emission was not observed visually due to bad weather conditions, the typical seismic signal that always accompanies the eruptions of Piton de la Fournaise, known as continuous volcanic tremor was sufficient for the volcano observatory to announce the (awaited) first eruption of this year. Later webcam images confirmed the presence of a new eruptive fissure feeding lava fountains and lava flows in the southern sector of the summit depression (Enclos).
During the preceding seismic crisis, more than 700 shallow volcanic earthquakes were measured – magma was rising under the surface and while making its path, it broke through rocks generating the quakes. Additionally, the instruments of the volcano observatory detected rapid ground deformation (inflation) caused by the underground pressure and expansion, also indicating that the magma had left a deeper reservoir and was spreading towards the surface.
