Colima volcano Volcanic Ash Advisory: EXPLOSIVE EM AT 20/0416Z

Fr, 20. Jan 2017, 05:15
05:15 AM |
Volcanic Ash Advisory Center Washington (VAAC) issued the following report:

FVXX23 at 05:04 UTC, 20/01/17 from KNES
VA ADVISORY
DTG: 20170120/0502Z

VAAC: WASHINGTON

VOLCANO: COLIMA 341040
PSN: N1930 W10337

AREA: MEXICO

SUMMIT ELEV: 12631 FT [3850 M]

ADVISORY NR: 2017/095

INFO SOURCE: GOES-EAST. GFS WINDS. VOLCANO WEB
CAMERA. PROTECCION CIVIL JAL

ERUPTION DETAILS: EXPLOSIVE EM AT 20/0416Z

OBS VA DTG: 20/0445Z

OBS VA CLD: VA NOT IDENTIFIABLE FROM SATELLITE
DATA WINDS SFC/FL230 NE/25-35KT

FCST VA CLD +6HR: 20/1100Z

FCST VA CLD +12HR: 20/1700Z

FCST VA CLD +18HR: 20/2300Z

RMK: WEB CAMERA INDICATED EXPLOSIVE EM AT 0416Z.
HGT BASED ON RPRT FROM PROTECCION CIVIL JAL.
ALTHOUGH A BRILLIANT HOT SPOT WAS DETECTED, VA
NOT SEEN IN STLT IMAGERY DUE TO WX CLD. ...TURK

NXT ADVISORY: WILL BE ISSUED BY 20170120/1100Z

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Background:

Colima volcano is one of the most active in North America and one of the potentially most dangerous ones. It has had more than 30 periods of eruptions since 1585, including several significant eruptions in the late 1990s. Scientific monitoring of the volcano began 20 years ago. 

The Colima volcanic complex is the most prominent volcanic center of the western Mexican Volcanic Belt.  It consists of two southward-younging volcanoes, Nevado de Colima (the 4320 m high point of the complex) on the north and the 3850-m-high historically active Volcán de Colima at the south. 
A group of cinder cones of probable late-Pleistocene age is located on the floor of the Colima graben west and east of the Colima complex. Volcán de Colima (also known as Volcán Fuego) is a youthful stratovolcano constructed within a 5-km-wide caldera, breached to the south, that has been the source of large debris avalanches.  Major slope failures have occurred repeatedly from both the Nevado and Colima cones, and have produced a thick apron of debris-avalanche deposits on three sides of the complex.  Frequent historical eruptions date back to the 16th century.  Occasional major explosive eruptions (most recently in 1913) have destroyed the summit and left a deep, steep-sided crater that was slowly refilled and then overtopped by lava dome growth.
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Source: GVP, Smithsonian Institute - Colima information
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