Popocatepetl volcano news & eruption update

Вулкан Popocatépetl: Консультативный центр по вулканическому пеплу: SMALL INTMT VA AND STEAM EMS.

Сб, 22 мая 2021, 16:45
16:45 PM | ПЇЅПЇЅПЇЅПЇЅПЇЅ: VN
Эруптивная активность продолжается. Консультативный центр по вулканическому пеплу (VAAC) в Washington предупредил о шлейфе вулканического пепла, который поднялся на высоту 18500 футов (5600 m).
Полный отчет выглядит следующим образом:

FVXX20 at 16:41 UTC, 22/05/21 from KNES
VA ADVISORY
DTG: 20210522/1638Z

VAAC: WASHINGTON

VOLCANO: POPOCATEPETL 341090
PSN: N1901 W09837

AREA: MEXICO

SUMMIT ELEV: 17802 FT [5426 M]

ADVISORY NR: 2021/446

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

ERUPTION DETAILS: SMALL INTMT VA AND STEAM EMS.

OBS VA DTG: 22/1621Z

OBS VA CLD: SFC/FL185 N1846 W09840 - N1842 W09840
- N1843 W09844 - N1846 W09844 - N1846 W09840 MOV
S 20KT

FCST VA CLD +6HR: 22/2230Z SFC/FL185 N1901 W09838
- N1901 W09837 - N1837 W09828 - N1835 W09838 -
N1901 W09838

FCST VA CLD +12HR: 23/0430Z NO VA EXP

FCST VA CLD +18HR: 23/1030Z NO VA EXP

RMK: SMALL INTMT VA EMS SEEN IN SAT MOV S AND
DSIPTG QUICKLY IN IMAGERY. MODEL GUIDANCE SHOWS A
MORE SSE MOV BYT+6 HRS. ...KIBLER

NXT ADVISORY: WILL BE ISSUED BY 20210522/2245Z

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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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