Volcano news: Colima Volcano (Mexico)
Colima volcano Volcanic Ash Advisory: DISCRETE VA EM
Sunday Dec 25, 2016 05:45 AM |
Volcanic Ash Advisory Center Washington (VAAC) issued the following report:
FVXX20 at 05:32 UTC, 25/12/16 from KNES
PSN: N1930 W10337
SUMMIT ELEV: 12631 FT [3850
ADVISORY NR: 2016/515
INFO SOURCE: GOES-EAST. GFS WINDS. NAM
VOLCANO WEB CAMERA.
ERUPTION DETAILS: DISCRETE VA EM
OBS VA DTG:
OBS VA CLD: SFC/FL170 N1945 W10341 - N1937 W10337
W10343 - N1943 W10347 - N1945 W10341 MOV
N 10KT SFC/FL220 N2032 W10253
- N2022 W10243 -
N1955 W10316 - N2006 W10327 - N2032 W10253 MOV NE
FCST VA CLD +6HR: 25/1100Z SFC/FL170 NO ASH
EXP SFC/FL220 NO ASH
FCST VA CLD +12HR: 25/1700Z NO ASH EXP NO ASH EXP
FCST VA CLD
+18HR: 25/2300Z NO ASH EXP NO ASH EXP
RMK: T+0 CONFIDENCE HIGH.
REMNANT VA FROM PRIOR EM
IS DIFFUSE AND MOV NE EXTD APRX 87 NM
SUMMIT. SUBSEQUENT DISCRETE VA EM MOV N AND
LOCATED APRX 24 NM
FROM SUMMIT. BOTH EM EXPECTED
TO DISP WI 6 HRS. ...VELASCO
ADVISORY: WILL BE ISSUED BY 20161225/1130Z
Wednesday, Dec 21, 2016
Explosions continue to be frequent at the volcano (intervals of 1-2 hours average). At the same time, the lava flow on the southern slope remains weakly active. ... [more]
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.
Source: GVP, Smithsonian Institute - Colima information