Roundup of Global Volcanic Activity – Ongoing Activity for the week of 7 December-13 December 2016

Bagana | Bougainville (Papua New Guinea) : Based on analyses of satellite imagery and model data, the Darwin VAAC reported that during 8-13 December ash plumes from Bagana rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted W, SW, S, and NE.

Colima | Mexico : Based on webcam and satellite images, and information from the Mexico City MWO, the Washington VAAC reported that ash plumes from Colima rose to altitudes of 4.6-7.3 km (15,000-24,000 ft) a.s.l. during 7-11 December and drifted almost 170 km in multiple directions.

Dukono | Halmahera (Indonesia) : Based on analyses of satellite imagery, VONAs issued by the Dukono Volcano Observatory, and model data, the Darwin VAAC reported that during 7-13 December ash plumes from Dukono rose as high as 3 km (10,000 ft) a.s.l. and drifted as far as 305 km NE, E, and SE.

Fuego | Guatemala : INSIVUMEH reported that during 6-7 December the number of explosions at Fuego increased to 3-5 per hour. Ash plumes rose 1 km above the crater and drifted 12 km W and SW, causing ashfall in areas downwind including Morelia (9 km SW), Santa Sofía (12 km SW), Panimaché I and II (8 km SW), El Porvenir (8 km ENE), and San Pedro Yepocapa (8 km N). Incandescent block avalanches reached vegetated areas. Activity continued at the same level through 12 December, although 4-6 explosions per hour were detected during 12-13 December. Ash plumes from explosions during 8-12 December rose as high as 1.1 km and drifted 12-15 km W, SW and S. Ash fell in the same areas downwind. During 8-9 and 11-12 December incandescent material was ejected 200 m above the crater, causing avalanches of material in the crater and towards the main ravines.

Katmai | United States : According to NASA’s Earth Observatory, a Moderate Resolution Imaging Spectroradiometer (MODIS) satellite image acquired on 2 December of the Katmai area showed a plume of re-suspended ash which had been deposited during the 1912 eruption.


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