Volcanoes Today, 29 Apr 2013: Stromboli, Popocatépetl, Tungurahua, Gaua, White Island, Telica [1]

Volcano Discovery Monday Apr 29, 2013 13:02 PM

Thermal webcam image of the crater area of Stromboli (INGV)

Explosion from Popocatépetl yesterday morning

Stromboli (Eolian Islands, Italy): Activity has decreased a bit yesterday, but strong explosions and small lava overflows from the NE crater rim and a vent at the outer flank continued, accompanied by frequent rockfalls on the Sciara. At the moment, activity seems to be increasing again.

Gaua (Vanuatu): The Wellington VAAC reported on 29 April that a Qantas Airline pilot noticed a possible ash plume from Gaua volcano.

The Vanuatu Geohazards keeps the alert at 1 (on a scale of 0-4)

White Island (New Zealand): Geonet has lowered the alert level of the volcano back to green (normal), following a gradual decline in seismic activity over the past weeks. Degassing remains intense, and after heavy rainfall during the recent past, a lake has been re-established at the main crater.

Popocatépetl (Central Mexico): Activity at the volcano has picked up in the past 48 hours. Following an earthquake swarm on Saturday with volcanic-tectonic quakes of magnitudes up to 2.3, which was probably the result of a new magma batch rising, an increase in small emissions occurred yesterday with 71 events registered during 24 hours.
The largest emission yesterday (at 10:33 local time) produced a steam and ash plume rising 1.2 km above the crater and drifted NE.

Telica (Nicaragua): Seismic activity has decreased a bit in energy recently. Although the frequency of earthquakes has slowed down, the quakes, still above background levels, are now of higher magnitude.

Tungurahua (Ecuador): Following the initial explosions and ash emissions on Saturday, a significant new eruptive phase has started at the volcano.
From 05h30 yesterday morning (local time), an explosion created a steam-ash column rising 4 km initially, then decreased and remained more or less sustained at 2.5 km height above the crater for 30 minutes. The plume drifted W and SW to more than 100 km and caused light ash falls in areas near and around the volcano, such as Banos, Chacauco, Bilbao, Cusúa, Juive Grande, Pondoa and Pillate.
 

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