RSS feed source: USGS Earthquake Hazards Program

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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RSS feed source: USGS Earthquake Hazards Program

Wed, 24 Sep 2025, 21:00 1758747608 | BY: SEVERAL CONTRIBUTORS

Map of today’s active volcanoes

Etna (Sicily, Italy): The Instituto Nazionale di Geofisica e Vulcanologia-Osservatorio Etneo (INGV-Osservatorio Etneo) reported that the eruption continued at Etna on 23 September 2025 (local). There were explosions reported. The aviation alert level was raised to “Yellow” (level 2 on a 4-level scale) on 23 September 2025 at 0623 by INGV due to increasing activity at the summit craters. The aviation alert level was raised to “Orange” (level 3 on a 4-level scale) on 23 September 2025 at 0625 by INGV following explosive activity at the summit craters, resulting in ash emissions confined to the summit region. The aviation alert level was lowered to “Yellow” (level 2 on a 4-level scale) on 23 September 2025 at 1333 by INGV as explosive activity was no longer observed. The alert level remained at

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