Volcanic activity worldwide 19 May 2023: Etna volcano, Popocatépetl, Semeru, Karangetang, Reventado…

Map of today’s active volcanoes

Etna (Sicily, Italy): (19 May) The INGV (National Institute of Geophysics and Volcanology) seismic network detected a rapid increase of continuous vibrations (so-called tremor) associated with a degassing at noon (12:10 local time) yesterday.
Volcanic tremor reached temporarily high values, indicating magma moving upwards through the volcanic conduits, and later on showed significant variations following a decrease to medium values. A sharp spike of high amplitude tremor returned back at 11:30 local time with an increasing tendency. The tremor has been located between the Bocca Nuova crater and the Southeast Crater at an altitude 2500 meters.
… [read more] … [show less]
Moreover, a seismic crisis has continued to evolve from 14:44 local time.
A volcano-tectonic earthquake with magnitude M 1.9 was registered at 15:00 local time following a small explosive eruption at the same time.

Karangetang (Siau Island, Sangihe Islands, Indonesia): After almost one month since the local volcano institute decreased the alert status for the volcano, activity started to rise again over the past two weeks.
Since 15 May, glowing lava blocks have been observed detaching from the Main Crater’s lava dome that reached a 1.5 km sliding distance over the south and southwestern slope. The activity has been accompanied by ongoing release of gas and steam emissions (so-called degassing) to an estimated 2500 meters altitude, dissipating into various directions.
… [read more] … [show less]
Visible glow and near-constant emissions of gas and steam at the North Crater’s lava dome suggest continuing fresh magma injection into the dome, as well.
The increasing trend of the activity is also shown in a continuous rise of seismic activity detected by the volcano observatory. During 1-17 May, the seismic station detected about 170 volcano-tectonic earthquakes. Magma continues to squeeze through surrounding rocks under the surface, which generates the elevated seismic energy. Afterwards, more and more unstable hot lava material in domes is accumulating and prone to collapse into hot rock falls, which in turn often develop into very dangerous pyroclastic flows as we know from previous activities.

Semeru (East Java, Indonesia): (19 May) Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: ONGOING DISCRETE VA TO FL150 LAST REPORTED AT 19/0226Z MOV E

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: VA EMS OBS to 22000 ft (6700 m)

Sangay (Ecuador): (19 May) Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VA NOT DETECTED

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: VA EM POSS 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 24000 ft (7300 m) altitude or flight level 240 and is moving at 20 kts in SE direction.
The full report is as follows: continuous ash emissions to 24000 ft (7300 m)

Volcano Activity Summary for 19 May 2023:

A minor explosion from Etna volcano at 15:15 local time yesterday following the elevated tremor (image: INGV)