Batu Tara (Sunda Islands, Indonesia): A few explosions were again strong enough to produce plumes that were spotted on satellite imagery recently.
Sinabung (Sumatra, Indonesia): Weak lava extrusion continues to add material to the viscous lava lobe, which at the same time looses some of its mass in occasional small rockfalls from its front and the sides. These sometimes result in small pyroclastic flows.
Popocatépetl (Central Mexico): No significant changes have occurred in the volcano’s activity during the past weeks. Magma continues to rise, at fluctuating rates, slowly into the summit crater, producing weak intermittent explosions and glow at night.
A small swarm of earthquakes with 6 volcano-tectonic quakes of magnitudes 2.6, 2.7, 1.8, 3.0, 2.6 and 3.0 occurred during 25-26 May.
The alert level remains unchanged at “Yellow Phase 2”. (CENAPRED)
Santa María / Santiaguito (Guatemala): A new viscous lava flow has started to slowly descend through the ravine on the eastern flank of the Caliente dome. Rock falls and strong degassing accompany this activity.
Pacaya (Guatemala): The volcano remains quiet. INSIVUMEH reports only a continuous degassing plume reaching about 50 m above the crater.
Fuego (Guatemala): Explosive activity has been weaker recently, with pulses of strombolian explosions ejecting incandescent material to up to 100 m above the crater. Effusive activity continued to feed the lava flow towards Barranca Taniluyá. This morning, it was still about 100 m long.
San Miguel (El Salvador): Seismic activity remains at elevated levels and the volcano emits strong pulsating gas and steam puffs rising to approx. 800 m. Heavy rainfalls have been causing damage due to mud flows in the areas at the feet of the volcano.
No further ash emissions were mentioned in SNET’s latest report, but reported that ground observers heard noises of what could be falling ejecta from explosions at the volcano. This could not be confirmed.
Ubinas (Peru): Steam and weak ash emissions continue at the volcano, but have decreased over the past days along with weaker seismic activity.
Heard (Australia, Southern Indian Ocean): Some activity has probably resumed (or continued) at the remote volcano. The latest MODVOLC images show a significant hot spot at the summit crater.
While the nature of the activity cannot be determined with certainty, the absence of ash on the snow-covered flanks of the volcano visible on satellite imagery, suggests that the activity is not or only weakly explosive and could consist in turn in the presence of a small lava lake.