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Volcanoes Today, 24 Apr 2015: Turrialba volcano, Villarrica, Calbuco

Friday Apr 24, 2015 18:00 PM |
Strombolian explosion at Turrialba this morning
Strombolian explosion at Turrialba this morning
Glow from VIllarrica this morning
Glow from VIllarrica this morning
Turrialba (Costa Rica): The ejection of incandescent lava in small strombolian-type explosions has been observed since 03:40 this morning at the volcano's crater. This means that new magma has now arrived at the crater.
The gradual change of eruptive style over the past weeks, from hydrothermal (steam-driven) explosions with relatively cold ash, then increasingly hot ash and gas emissions to now at least partially magma-driven explosions, reflects the slow ascent of magma.

Villarrica (Central Chile): SERNAGEOMIN reported weak strombolian activity during the past days and the presence of a small oscillating lava lake in the summit crater's inner pit.
The explosions were limited to the crater area and ejected material to up to 100 m from the vent. A slight increase in activity was noted yesterday morning by local media. Bright glow is visible at the volcano's summit at night.
The Alert Level remained at Orange and (the second highest level on a four-color scale) and a 5 km access restriction zone is in place. A major risk could be lahars caused by sudden melting of snow if more intense activity sets in.

Calbuco (Southern Chile and Argentina): The volcano has so far stayed calm, but the alert level remains at red because another explosion could occur. A major problem in this situation seems to be that eruptions such as the recent one are likely to remain something impossible to predict - at least in some cases.
It seems that the eruption on Wednesday evening was only preceded by 15 minutes (!) of an intense intense earthquake swarm that could reasonably have been served as a clear warning sign.
Tidigare Nyheter
Sub-plinian eruption of Calbuco this morning (image: C.I.M.A.T / facebook)
Thursday, Apr 23, 2015
Calbuco (Southern Chile and Argentina): The 21 y-o mountaineer who was missing and feared victim of the eruption has survived and has been rescued, fortunately. Together with a small group of friends, he was on excursion on the mountain when the eruption occurred last night. ... [mera]
Ash plume from Nevado del Ruiz Monday afternoon (INGEOMINAS)
Wednesday, Apr 22, 2015
Aso (Kyushu): Mild strombolian activity with low-level ash emissions continue from the Nakadake crater. ... [mera]
Lava flow on Fuego early on 18 April 2015
Monday, Apr 20, 2015
Fuego (Guatemala): A more intense phase of activity with the effusion of a 2 km long lava flow on the southeastern slope into the Taniluya canyon occurred during 17-18 April. ... [mera]
Strombolian eruption at Stromboli on 10 April (INGV)
Thursday, Apr 16, 2015
Stromboli (Eolian Islands, Italy): (16 Apr) During the past week, activity at the volcano has picked up and resumed to its typical normal strombolian activity - good news for all who are going to visit the island during the starting tourist season. ... [mera]
Epicenters of recent earthquakes south of Hekla
Tuesday, Apr 14, 2015
Hekla (Iceland): Small earthquake swarms occurred at shallow depths during the past days near the volcano. The quakes were located approx. 6-10 km south of Hekla volcano and at shallow depths around 5 km. ... [mera]

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