Reykjanes (Reykjanes peninsula (SW Iceland)): Nearly all of the latest quakes have been centered around the Eldvorp crater system about 5km SW of the Blue Lagoon and 6 km west of Grindavik.
This is probably the most likely location of a new eruption, which has the serious potential to disrupt the energy plant there as well as to threaten one of Iceland’s most iconic tourist destinations.
Many people on the #Reykjanes peninsula waking up to a swarm of moderate #earthquakes this morning. Quite a few quakes 3+ and even a few 4+. These are centered around the #Eldvorp crater system, about 5km bit W of Blue Lagoon and Svartsengi. No sign of eruption tremors. pic.twitter.com/IgJL8mlOHb
— Gisli Olafsson (@gislio) November 5, 2023
…5 Nov:
The Icelandic Met Office’s (IMO) GPS station near Grindavik clearly shows the ongoing ground deformation, as intruding magma underneath is creating a „bulge“ of the affected area.
Since the start of the crisis a week ago, Grindavik has thus moved approx. 4 cm to the southeast and 5-6 cm upwards.
…5 Nov:
Given the increasing volcano-seismic crisis and rising probability of a new eruption, lots of modeling and speculation is now about where it might occur.
Most probably, it would be where the earthquakes are currently clustered, along a linear SW-NE alignment just south of the famous Blue Lagoon, and with its center approx. 6 km NW of Grindavik.
..Lava may flow out quickly at the beginning..“Where the lava would go is determined by where exactly the fissure would be; it could flow to NE in direction of Svartsengi or to S in direction of Grindavík., both Svartsengi and Blue Lagoon are vulnerable.“https://t.co/Vwy6SJngo0 pic.twitter.com/TaJMKm2iJO
— Icevolcanx (@Icevolcanx) November 4, 2023
…5 Nov:
Following yesterday’s relative calm in seismic activity, quakes have again picked up significantly early this morning.
Along with hundreds of smaller quakes, two magnitude 4.2 earthquakes hit 6.5 km northwest of Grindavik this morning at 6.32 and 6.45 a.m. local time. The quakes occurred at shallow 2.1 and 5.1 km depth, presumably indicating the area where magma is currently intruding.
Tension remains as to whether and when a new eruption in the area might start, but with the seismic swarm and ground deformation ongoing, the chances of it have been increasing by the day.
Klyuchevskoy (Kamchatka): Volcanic Ash Advisory Center Anchorage (VAAC) issued the following report: REMAINING VA FROM 28/1953Z ERUPTION.
…5 Nov:
According to the Kamchatka Volcanic Eruption Response Team (KVERT) institute, the eruptive period at the volcano ceased.
From the latest satellite imagery of the volcano acquired on 3 November, a relatively strong thermal anomaly is being detected on the northern, western and south-southeastern slopes, confirming lava flows from the recent strong paroxysm explosion. This might suggest the crystallization process of emissions of lava. Residual dust emissions remain confined in the area of the volcano and obscure clear views of lava flows.
Old-deposit debris avalanches/landslides continue to generate ash plumes as they collapse from the Apakhonchich lava flow levees. Lava levees are natural banks of lava flow as they cool and congeal along the banks.
Mayon (Luzon Island, Philippines): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20231105/1257Z VA CLD UNKNOWN REPORTED OBS VA DTG:05/1250Z
Ibu (Halmahera, Indonesia): (5 Nov) 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 TO FL060 OBS 05/0040Z MOV NE. to 6000 ft (1800 m)
Dukono (Halmahera): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 8000 ft (2400 m) altitude or flight level 080 .
The full report is as follows: CONTINUOUS VA TO FL080 OBS 05/1830Z MOV E OBS VA DTG:05/1830Z to 8000 ft (2400 m)
Katmai (Alaska Peninsula, USA): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Anchorage warned about a volcanic ash plume that rose up to estimated 5000 ft (1500 m) altitude or flight level 050 .
The full report is as follows: NO ERUPTION to 5000 ft (1500 m)
Popocatépetl (Central Mexico): 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 .
The full report is as follows: LGHT VA to 20000 ft (6100 m)
Nevado del Ruiz (Colombia): (4 Nov) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA OBS AT 04/2029Z
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 .
The full report is as follows: VA EM OBS IN SAT. 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 .
The full report is as follows: CONTG 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 20000 ft (6100 m) altitude or flight level 200 .
The full report is as follows: continuous ash emissions to 20000 ft (6100 m)
Villarrica (Central Chile): It’s been almost two weeks since the activity at the volcano decreased and still continues at moderate levels.
Passive, incandescence emissions of steam, gas and a small amount of ash are emitted from the summit vent. As confirmed by the latest satellite image, the vivid summit lava-filled pond remains active, hinting the continuous delicate equilibrium between heat and magma supply and loss (through cooling and mild emissions during degassing).
… [read more]
Volcano Activity Summary for 5 Nov 2023:
