Volcanic activity worldwide 3 Feb 2023: Santiaguito volcano, Fuego, Popocatépetl, Reventador, Kilau...

Sakurajima (Kyushu, Japan): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTED AT 20230203/1051Z FL080 EXTD SE OBS VA DTG:03/1050Z

Suwanose-jima (Ryukyu Islands): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: EXPLODED AT 20230203/1709Z OVER FL040 EXTD SE OBS VA DTG:03/1700Z

Kilauea (Hawai'i): (3 Feb) The effusive eruption within the Halemaʻumaʻu crater continues with little changes as it's being seen waned over the past two days.
The eastern lava lake started to crust itself during the morning of 1 February and formed a narrow bridge-like crust section through the center of the lake (so-called isthmus) separating it into the northern and southern parts. This phenomenon is well visible in the latest Sentinel-2 satellite image from 1 Feb portraying two smaller glowing yellow patches of lava.
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The two active areas in the eastern lava lake were about 25 acres in size measured on 17 January where each one showed independent and opposite surface convection movements from levees towards the isthmus direction.

The lava spattering in the southern part of the eastern lava lake disappeared from view for 45 minutes at 11:15 PM local time on 1 February, but it returned back at midnight. At about 01:00 AM local time, the lava surface from the southern part invaded the whole eastern lava lake including levees boundaries and the isthmus and returned to the original single lava lake at about 04:00 AM yesterday morning. It currently continues at stable conditions again, suggesting that there is a delicate equilibrium between heat and magma supply and loss (through cooling and mild emissions during degassing).


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: MINOR VA LIKELY to 20000 ft (6100 m)

Santiaguito (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 .
The full report is as follows: DISCRETE VA EMS OBS to 14000 ft (4300 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: VA OBS MOVG W to 15000 ft (4600 m)

Nevado del Ruiz (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: PREV VA EM HAS DISP

Sangay (Ecuador): (3 Feb) 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: VA EMS OBS 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: MINOR VA EMS to 15000 ft (4600 m)

Cotopaxi (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 24000 ft (7300 m) altitude or flight level 240 .
The full report is as follows: VA EM MOV SE to 24000 ft (7300 m)

Sabancaya (Peru): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Buenos Aires 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: UNABLE TO DETECT to 22000 ft (6700 m)

Villarrica (Central Chile): (3 Feb) After roughly five days with "only" ash-venting period, a vigorous lava-fountaining episode (so-called paroxysm) returned back to the summit crater yesterday morning.
Hot, fresh and incandescent clasts were seen ejecting from the vent onto the upper western slopes of the edifice accompanied by vividly illuminating steam emissions.
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The Volcanic Alert Level remains at Yellow with 500 meters exclusion zone around the main crater in place.

Volcano Activity Summary for 3 Feb 2023: