Roundup of Global Volcanic Activity
Stromboli (Eolian Islands, Italy): Another lava overflow from the NE vent occurred this morning, starting around 10:00 local time. It followed a phase of increased activity from the summit vents. Being issued more towards the east from the vent itself, it took a through a gap between the N1 and N2 vents and traveled on the upper Sciara a bit more to the north compared to the previous lava flows. By the afternoon, it had already more or less stopped. Many rockfalls have been occurring on the Sciara during the whole day.
Etna (Sicily, Italy): The small effusive eruption continues with little variation. The northern branch of the lava flow slowly advances towards the Valle del Bove. Tremor fluctuates at moderately elevated levels.
Sinabung (Sumatra, Indonesia): No significant changes in activity have occurred, although some local media reported apparently stronger (rock-fall and pyroclastic flow) activity over the weekend: The extrusion of viscous lava from the volcano’s summit vent continues to feed the second lava lobe on the steep, upper SE slope of the volcano. As it slowly grows and advances, it continues to produce avalanches of rocks that break off its front and sides, which sometimes generate small to medium-sized pyroclastic flows with associated ash plumes that can rise to a few km.
Dukono (Halmahera): The volcano has been particularly active during the past days and been producing many strong explosions with lots of ash emitted. Ash plumes to 7,000-10,000 ft (2-3 km) altitude and drifting up to 100 km to the NE have been spotted frequently by VAAC Darwin on satellite imagery.
Kilauea (Hawai’i): (14 Jul) The summit of Kilauea began to slowly inflate over the past 48 hrs, and the lava lake within Halemaumau crater rose slightly, its level fluctuating in response to changes in spattering. The lava lake remains around 45m (147ft) below the crater rim. Seismic tremor was low but rose and fell over hours-long periods in response to variations in the intensity of spattering on the lava lake surface.
At the middle East Rift Zone, lava flows continued to erupt from the northeast flank of Puʻu ʻŌʻō cone, spreading to the north. These new flows, which began June 27th, are stalled out in a flat area but are slowly making progress downhill and towards the ocean. Gas emissions remained elevated all along the East Rift Zone.
Popocatépetl (Central Mexico): No significant changes in the currently low activity at the volcano have occurred recently. The continued slow lava extrusion at its summit crater manifests itself in sporadic small explosions, glow visible at night, and a more or less important degassing plume rising up to approx. 1 km above the volcano.
Fuego (Guatemala): Yesterday’s new lava flow was no longer active today. Explosive activity has been weak to moderate today.
Ubinas (Peru): Since some days ago, the volcano’s activity has changed from intermittent, sporadic explosions followed by more or less long-lasting quiet intervals to producing near-constant emissions of low steam and ash plumes.