Volcanic activity worldwide 17 Nov 2023: Santiaguito volcano, Fuego, Klyuchevskoy, Popocatépetl, Se…

Map of today’s active volcanoes

Reykjanes (Reykjanes peninsula (SW Iceland)): Friday morning (17 Nov), there is still NO eruption on the Reykjanes Peninsula, but scientists continue to believe that a new eruption is likely to start in the coming days.
Magmatic gas was detected at a borehole in Svartsengi (near the Blue Lagoon), which indicates that magma is close to the surface. As well, inflation of the ground has continued as magma continues to intrude at shallow depth.
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Earthquake activity has been constant over the past days. More than 600 small tremors have been recorded in the area over the last 24-hour time span. It is actually typical for seismic activity to be calmer in a period immediately before an eruption, until magma pressure suddenly exceeds a threshold to open its final path to the surface and erupt.

…17 Nov:
Scientists from the Icelandic Met Office (IMO) measured the presence of volcanic gases from a borehole approving molten rock (magma) in the 15-km long NE-SW linear oriented underground dike.
The latest ground deformation statistics detected that the surface between two GPS stations in the centre of the valley in Grindavík subsided by 25 cm during 12-16 November.
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A new map, showing the mapped outline of the graben, resulting from extensive forces of expanding magma beneath the surface, is available now.

…17 Nov:
As of early morning on the Reykjanes peninsula, 05:30 local time today, no eruption has occurred yet.
Last night, the seismic activity has continued with many small earthquakes, similar to yesterday, located mainly at 5 km depths with magnitudes M 1-2, a couple ones between M 2-3.
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At 22:29:45 UTC yesterday, the quake M 4.3 was located at 4.4 km depth with epicenter 63.87°N / 22.42°W (latitude/longitude), the area of Grindavikurbær.
Kristín Jónsdóttir, head of the volcanic activity department at the Icelandic Met Office (IMO) estimates an eruption is coming within the upcoming next few days. Kristín continues: „We are seeing the seismic activity in the dike intrusion. We are seeing signs that indicate that the magma has reached a depth of several hundred meters. There is of course, the entire magma intrusion underneath, but we are seeing the most activity in the middle of the dike. So the most likely place to occur an eruption is west of Hagafell.“

Klyuchevskoy (Kamchatka): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: VA IS NOT IDENTIFIABLE IN SATELLITE IMAGERY.

Shiveluch (Kamchatka): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: VA IS NOT IDENTIFIABLE IN SATELLITE IMAGERY.

Sakurajima (Kyushu, Japan): (16 Nov) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20231116/2129Z OVER FL070 EXTD SE OBS VA DTG:16/2120Z

Mayon (Luzon Island, Philippines): (17 Nov) Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20231117/0148Z VA CLD UNKNOWN REPORTED OBS VA DTG:17/0140Z

Lewotolo (Lesser Sunda Islands): (16 Nov) Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: VA REPORTED TO FL060 MOV NW AT 16/2230Z OBS VA DTG:16/2230Z

Semeru (East Java, Indonesia): (17 Nov) Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .
The full report is as follows: DISCRETE VA EMISSION TO FL140 MOV NW AT 17/0020Z to 14000 ft (4300 m)

Dukono (Halmahera): (17 Nov) The volcano’s behavior is defined by the phase of ash-rich eruption plumes over the past ten days or so.
Grey-to-black heavy, dense ash plumes continue to spew from the crater dissipating mostly eastward to an approx. altitude of 8,000 ft (2,400 m).
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In order to mitigate risk, people are advised to avoid the area within a radius of 2 km from the crater.

Popocatépetl (Central Mexico): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 22000 ft (6700 m) altitude or flight level 220 .
The full report is as follows: CONS VA EMS SEEN IN SAT AND WEBCAM. to 22000 ft (6700 m)

Santiaguito (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA OBS

Fuego (Guatemala): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington 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: VA EMS OBS to 16000 ft (4900 m)

Nevado del Ruiz (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA NOT SEEN IN SAT

Puracé (Colombia): (17 Nov) The Servicio Geológico Colombiano (SGC) issued a report that seismic recordings started to detect a new seismic signal at the volcano since 07:29 PM local time yesterday.
The increased activity is likely related to the release of gas, steam and possibly some amount of ash emissions from the main crater. Visibility of the eruptive phase has been limited due to night observations. Therefore, webcameras installed in the upper part of the edifice were not capable to detect the height of the ash plume last night. However, it is highly presumably that the volcano continues to emit gas, steam and likely ash emissions.
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Despite the increased activity, the alert level for the volcano remains Yellow so far.

Sangay (Ecuador): (17 Nov) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA NOT OBSD.

Reventador (Ecuador): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: NO VA OBS

Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires warned about a volcanic ash plume that rose up to estimated 25000 ft (7600 m) altitude or flight level 250 .
The full report is as follows: INTERMITTENT EMISSIONS to 25000 ft (7600 m)

Volcano Activity Summary for 17 Nov 2023:

Recent quakes under Reykjanes Peninsula