Volcanos

Roundup of Global Volcanic Activity:

El Hierro (Canary Islands, Spain): The island has remained calm with not much signs of volcanic unrest. Two small earthquakes (magnitudes 2.8 and 1.7) occurred at approx 10 km depth east of La Restinga yesterday, but so far, there have not been new ones since. Tremor is absent except perhaps on some of the stations in the western El Golfo area (CTAB station) and deformation has been stagnating.

Sinabung (Sumatra, Indonesia): The current eruption, characterized by the growing lava dome producing numerous explosions and pyroclastic flows, continues at increasing levels. During yesterday, several (at least 5) pyroclastic flows (hot block and ash avalanches triggered by partial collapse of the unstable dome) traveled down on the southeastern side and reached lengths of up to 4 km, with associated ash plumes rising more than 4 km height to altitudes of 24,000 (7.3 km).

Dukono (Halmahera): Mild to moderate explosions produce frequent small ash plumes detected by VAAC Darwin on satellite data.

Santa María / Santiaguito (Guatemala): The volcano observatory reports no changes in activity: abundant degassing, weak to moderate explosions with ash plumes rising 500-700 m and constant block avalanches from the lava flows on the east and SW flanks of the dome.

Pacaya (Guatemala): Mild strombolian activity continues with little changes. Incandescent ejections can be seen from the capital on clear nights.

Fuego (Guatemala): Occasional strombolian explosions are relatively strong, producing incandescent ejections up to 100-150 m above the crater and causing incandescent avalanches around the crater. Ash plumes rose to up to 500 m. Shock waves can often be felt accompanying the explosions.