Popocatépetl Volcano Volcanic Ash Advisory: POSS ONGOING VA EMS to 21000 ft (6400 m)

Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 21000 ft (6400 m) altitude or flight level 210 . The full report is as follows: FVXX24 at 02:40 UTC, 28/08/19 from KNES VA ADVISORY DTG: 20190828/0238Z VAAC: WASHINGTON VOLCANO: POPOCATEPETL 341090 PSN: N1901 W09837 AREA: MEXICO SUMMIT ELEV: 17802 FT [5426…

Shiveluch volcano (Kamchatka, Russia): no major eruption on 25 Aug, ash plume only to 23,000 and not 70,000 ft

The recently reported eruption on 25 Aug alerting of an ash plume as high as 70,000 ft (21300 m) did not take place. There is no data (satellite-based, direct observations etc) to confirm an eruption of this magnitude. The report was based on an erroneous alert from the Anchorage VAAC. An eruption did take place, observed by a group of people staying nearby and who sent us images on social…