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Volcanoes Today, 21 Apr 2014: Fuego, Merapi, Dukono

Monday Apr 21, 2014 10:00 AM |
Strombolian explosion from Fuego this morning
Strombolian explosion from Fuego this morning
Merapi (Central Java, Indonesia): A new explosion occurred at the volcano early yesterday morning (Sun, 20 April), at around 4:25 am local time. VAAC Darwin reported an ash plume rising to approx. 30-35,000 ft (9-11 km) altitude and drifting NWN, and raised the aviation alert level to red.
VSI in turn has not changed the alert status (currently at 1, "normal", out of 4) of the volcano because it seems that scientists think that the explosion was phreatic in nature, i.e. not caused by fresh magma, but interaction of penetrating (rain) water into the hot rocks in the upper conduit system of the volcano. No unusual seismic activity is currently detected at Merapi.
The explosion was not observed during the nighttime, but heard in several kilometers distance away, and ash falls occurred in villages around the volcano, prompting residents to wear dust masks and clean up roofs and streets from ash.

Dukono (Halmahera): Explosions that are strong enough to leave ash plumes visible on satellite data continue to occur almost every day. This morning, VAAC Darwin reported an ash plume at 8,000 ft (2.4 km) altitude.

Fuego (Guatemala): Activity at the volcano continues to be elevated and increased yesterday, prompting INSIVUMEH to issue a special bulletin yesterday, in which the agency warns that a possible new paroxysm could occur in the near future.
The volcano observatory reported moderate to strong explosions with plumes up to 1 km height and drifting 12 km, causing ash falls ash on the villages Panimaché, Morelia, Santa Sofia and others. This activity was also accompanied by increased tremor. As of today, it has decreased again, but remains high, and the occurrence of another paroxysm is still a potential scenario.
... [read more]
Tidigare Nyheter

Saturday, Apr 19, 2014
Etna (Sicily, Italy): (19 Apr) Etna's New SE crater and the team of VolcanoDiscovery in Italy (aka OPEC) and elsewhere wishes you a Happy Easter! ... [mera]
Pyroclastic flow on Sinabung yesterday (photo: Firdaus Surbakti - facebook.com/firdaus.surbakti)
Friday, Apr 18, 2014
Chirpoi (Kurile Islands, Russia): SVERT reported that on 13 April satellite images over Snow, a volcano of Chirpoi, detected steam-and-gas emissions. Cloud cover obscured views on the other days during 9-15 April. The Aviation Color Code remained at Yellow. (Smithsonian / USGS Weekly Volcanic Activity Report 9-15 April 2014) ... [mera]
Eruption from Shiveluch volcano this morning (KVERT webcam)
Thursday, Apr 17, 2014
Shiveluch (Kamchatka): The volcano continues to slowly extrude viscous lava at its dome. An ash plume was produced this morning that rose to 13,000 ft (4.2 km) altitude and drifted SE. Most likely, it had been caused by a small to moderately large collapse on the eastern flank: ... [mera]
Wednesday, Apr 16, 2014
Kilauea (Hawai'i): Kilauea summit tiltmeters record continued DI inflationary tilt (+3 microradians over the past 36 hrs) and the lava lake is now at an estimated 48m (157ft) below the floor of Halema`uma`u crater. Gas emissions continued to be elevated at the summit eruption. The Pu`u `O`o eruption, on the East Rift Zone of Kilauea, continued to be sluggish with no significant changes. ... [mera]
Earthquakes in southern Iceland during the past 48 hours
Monday, Apr 14, 2014
Hekla (Iceland): A shallow (around 8 km depth) earthquake swarm including two quakes at 2.7 and 2.9 magnitude has started in an area 12 km to the south of Hekla volcano. ... [mera]

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