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Popocatépetl Volcano Volcanic Ash Advisory: DISCRETE VA EM AT 0902Z. to 20000 ft (6100 m)

Sat, 4 Dec 2021, 10:30
10:30 AM | BY: VN
Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20000 ft (6100 m) altitude or flight level 200 .
The full report is as follows:

FVXX20 at 10:28 UTC, 04/12/21 from KNES
VA ADVISORY
DTG: 20211204/1026Z

VAAC: WASHINGTON

VOLCANO: POPOCATEPETL 341090
PSN: N1901 W09837

AREA: MEXICO

SUMMIT ELEV: 17802 FT [5426 M]

ADVISORY NR: 2021/674

INFO SOURCE: GOES-16. WEBCAM. NWP MODELS.

ERUPTION DETAILS: DISCRETE VA EM AT 0902Z.

OBS VA DTG: 04/1001Z

OBS VA CLD: SFC/FL200 N1901 W09837 - N1852 W09829
- N1850 W09831 - N1901 W09838 - N1901 W09837 MOV
SE 10KT

FCST VA CLD +6HR: 04/1600Z SFC/FL200 N1901 W09838
- N1901 W09837 - N1844 W09834 - N1844 W09839 -
N1901 W09838

FCST VA CLD +12HR: 04/2200Z NO VA EXP

FCST VA CLD +18HR: 05/0400Z NO VA EXP

RMK: VA EM OBSD ON WEBCAM AT 0902Z. VA CLD NOW
OBSD 10 NMI SSE OF THE SUMMIT. VA EXPCD TO DISP
QUICKLY. FURTHER ACT PSBL. NWP MDLS FCST WINDS TO
MOV ANY FURTHER VA CLDS TO THE S BY T+6. ...HOSLEY

NXT ADVISORY: WILL BE ISSUED BY 20211204/1630Z

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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 time.


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Source: GVP, Smithsonian Institution - Popocatepetl information


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