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Fri, 4 Jul 2025, 22:00 1751666408 | BY: SEVERAL CONTRIBUTORS

Map of today’s active volcanoes

Satellite image of Shiveluch volcano on 4 Jul 2025

Near-frequent ash emissions from Kirishima volcano (image: @WeatherMonitors/x.com)

Satellite image of Lewotolo volcano on 4 Jul 2025

Shiveluch (Kamchatka): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 and is moving at 5 kts in W direction.
The full report is as follows: POSS ERUPTION OBS AT 20250704/1650Z FL150 EXTD W OBS VA DTG:04/1730Z to 15000 ft (4600 m)

Kirishima (Kyushu): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 17000 ft (5200 m) altitude or flight level 170 and is moving at 15 kts in SW direction.
The full report is as follows: POSS VA EMISSIONS

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Background:

Volcán Popocatépetl, whose name is the Aztec word for smoking mountain, towers to 5426 m 70 km SE of Mexico City to form North America’s 2nd-highest volcano.  The glacier-clad stratovolcano contains a steep-walled, 250-450 m deep crater.  The generally symmetrical volcano is modified by the sharp-peaked Ventorrillo on the NW, a remnant of an earlier volcano. 
At least three previous major cones were destroyed by gravitational failure during the Pleistocene, producing massive debris-avalanche deposits covering broad areas south of the volcano.  The modern volcano was constructed to the south of the late-Pleistocene to Holocene El Fraile cone.  Three major plinian eruptions, the most recent of which took place about 800 AD, have occurred from Popocatépetl since the mid Holocene, accompanied by pyroclastic flows and voluminous lahars that swept basins below the volcano.  Frequent historical eruptions, first recorded in Aztec codices, have occurred since precolumbian

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