Hekla (Iceland): (15 Nov) Aftershocks of Thursday’s strong magnitude 5.2 quake under neighboring Vatnafjöll volcano continue with more than 50 tremors detected over the past 48 hours.
An increased number of quakes has also been occurring under Hekla volcano immediately to the north, most of them under the southwestern and western flanks. The problem is that Hekla, one of the country’s most active volcanoes, and one of its most dangerous ones, is statistically overdue for an eruption, but typically does not give much warning signs such as earthquake swarms. Very often, the eruptions start with little to no warning time.
Whether last week’s quake and the now continuing aftershocks will influence Hekla remains an open question, but the volcano is being monitored very closely.
La Palma (Canary Islands (Spain)): The eruption has intensified today compared to the previous days. Periods of small lava fountaining and moderate ash emissions were seen at the summit vents today.
In the morning, the ash plume rose to 8,000 ft (2.4 km) altitude and drifted to the east coast, forcing the airport to temporarily close its operations.
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…15 Nov:
The eruption remains stable without significant changes in intensity. This morning, explosive activity at the vents was stronger again, producing ash plumes that rose to 8,000 ft (2.4 km) altitude and drifting west over the ocean. Lava continues to flow towards the ocean.
Sometimes, heat convection and winds created small heat „tornados“ over the hot lava flow field, similar as dust devils in the desert, as the following video shows:
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El volcán crea un pequeño TORNADO en la base de su cono, visible a kilómetros de distancia. Las altas temperaturas generadas por la lava y la meteorología cambiante han propiciado la creación de este tornado de cenizas y polvo en la zona de Las Manchas. #VolcandeLaPalma pic.twitter.com/tSLlgMU28E
— El Time (@ElTimeLaPalma) November 15, 2021
Strombolian explosions and lava spattering occur during phases, and can be seen especially well at night. Surface lava flows are active on the slopes of the cone, as sometimes lava overspills from the lower vents, although most of it continues to go directly into the tube system to feed the active flow downslope near the ocean. Only minor flow tongues actually touched the water today, as can be seen in this video from the Coast Guard:
Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20211116/1256Z FL080 EXTD SW OBS VA DTG:16/1250Z
Ibu (Halmahera, Indonesia): (16 Nov) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 7000 ft (2100 m) altitude or flight level 070 .
The full report is as follows: VA TO FL070 MOV NE AT 16/0010Z OBS VA DTG:16/0020Z to 7000 ft (2100 m)
Semeru (East Java, Indonesia): (15 Nov) Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA REPORTED TO FL140 AT 15/2150Z MOV SW OBS VA DTG:15/2150Z
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 35 kts in N direction.
The full report is as follows: OCCASIONAL LOW LEVEL ERUPTIONS. to 10000 ft (3000 m)
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: NEW VA EMS to 15000 ft (4600 m)
Nevado del Ruiz (Colombia): (16 Nov) 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 10 kts in W direction.
The full report is as follows: CONT VA EMS to 19000 ft (5800 m)
Sangay (Ecuador): (16 Nov) 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 .
The full report is as follows: OCNL EM to 19000 ft (5800 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 .
The full report is as follows: ONGOING VA EMS. to 15000 ft (4600 m)
Sabancaya (Peru): Volcanic Ash Advisory Center Buenos Aires (VAAC) issued the following report: INTERMITTENT EMISSIONS OF VA
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 13000 ft (4000 m) altitude or flight level 130 and is moving at 10 kts in N direction.
The full report is as follows: INTERMITTENT EMISSIONS to 13000 ft (4000 m)
