Popocatépetl Volcano Volcanic Ash Advisory: VA EM DTCTD to 19000 ft (5800 m)

Published: 28 October 2025
Categories: Global Volcano Activity

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

Click this link to continue reading the article on the source website.

Moderate mag. 4.9 earthquake – Departamento de Rosario Vera Penaloza, La Rioja Province, 121 km west of Villa Dolores, Departamento de San Javier, Cordoba Province, Argentina, on Tuesday, Oct 28, 2025, at 05:42 am (La Rioja time)

Published: 28 October 2025
Categories: Global Earthquake Activity

RSS feed source: USGS Earthquake Hazards Program

Date and TimeMag
DepthDistanceLocationDetailsMap Oct 22, 12:51 am (La Rioja)

4.4

154 km30 km (18 mi) to the SW Departamento de Rosario Vera Penaloza, 263 km south of La Rioja, Departamento de Capital, La Rioja Province, Argentina  I FELT IT – 2 reportsInfoSep 21, 06:08 am (San Luis)

4.6

138 km69 km (43 mi) to the SW Ayacucho, 162 km north of San Luis, Juan Martin de Pueyrredon, San Luis Province, Argentina InfoApr 24, 01:07 am (San Juan)

4.0

134 km64 km (40 mi) to the W San Juan, Argentina InfoSep 23, 2024 11:48 pm (San Luis)

4.2

150 km76 km (47 mi) to the SW San Luis Province, 157 km east of San Juan, Departamento de Capital, San Juan Province, Argentina InfoSep 23, 2024 09:58 pm (Cordoba)

5.0

152 km67 km (42 mi) to the E Departamento de Pocho, 81 km northwest of Villa Dolores, Departamento de San Javier, Cordoba Province, Argentina 2 reportsInfoSep 21, 2024 06:24 pm (San Juan)

6.0

141 km64 km (40 mi) to the SW Departamento de Caucete, San Juan Province, 164 km north of San Luis, Juan Martin de Pueyrredon, San Luis Province, Argentina 137 reportsInfoMar 27, 2024 07:54 am (San Juan)

4.7

129 km76 km (48 mi) to the W 107 km E of Caucete, Argentina 1 reportInfoMay 29, 2023 12:02 pm (La Rioja)

4.9

127 km46 km (29 mi) to the SW Rosario Vera Penaloza, La Rioja Province, 139 km east of Caucete, Departamento de Caucete, San Juan Province, Argentina 8 reportsInfoFeb 28, 2023 01:49 am (La Rioja)

5.0

10.4 km65 km (41 mi) to the NE La Rioja-Cordoba Border

Click this link to continue reading the article on the source website.