Popocatépetl Volcano Volcanic Ash Advisory: OCNL VA EMS to 20000 ft (6100 m)

Published: 4 November 2025
Categories: Global Volcano Activity

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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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Moderate magnitude 4.3 earthquake 13 miles southwest of Kotzebue, Alaska, United States

Published: 3 November 2025
Categories: Global Earthquake Activity

RSS feed source: Volcano Discovery.com

Tue, 4 Nov 2025, 06:34 | BY: EARTHQUAKEMONITOR

A magnitude 4.3 earthquake near Kotzebue, Northwest Arctic, Alaska, USA, was reported only 7 minutes ago by the United States Geological Survey, considered the key international and national agency that monitors seismic activity in the US. The earthquake occurred at a very shallow depth of 0.6 miles beneath the epicenter in the evening on Monday, November 3rd, 2025, at 9:26 pm local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.3 earthquake as well.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Kotzebue (pop. 3,300) located 13 miles from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Deering (pop. 130) located 46 miles from the epicenter, Noorvik (pop. 690) 49 miles away, Noatak (pop. 510) 58 miles away, and Kiana (pop. 360) 67 miles away.
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