The number of VLP seismic events (standard values 5-12) is high, 15.1 events/hour.

The amplitude of seismic tremor is high.

The infrasonic activity is high. The acoustic pressure of explosions is medium, 0.31 bar (standard values <1 bar). The amplitude of puffing is high, ~50 mbar.

Tiltmeters analysis does not show any significant deformation of the volcano edifice

Thermal activity of explosive events is medium. The number of thermal transients in the NE sector of the crater (standard = 100) is high, 221. The amplitude of thermal transients is low, 2.3 ºF. Exit velocity of pyroclasts, estimated through thermal camera analysis, is low, 14 m/s.

MODIS thermal anomalies are medium: 24 MW (00:24 UTC yesterday).

Rockfall activity is high. The number of rockfalls is 12 per day.

SO₂ flux in the NE sector of the crater terrace is medium, 86 t/d

CO₂ flux based on the C/S of 10.87 mesured at 03:20 UTC on 2026/05/30 is low, 180 t/d

Indice di Attività Vulcanica: high

• Seismic (VLP) rate HIGH
• Seismic tremor HIGH
• Puffing HIGH
• Acustic pression of explosions MEDIUM
• Thermal activity MEDIUM
• SO₂ flux MEDIUM
• CO₂ flux LOW
• Rockfall activity HIGH

In the last 24h, the volcanic activity is characterized by Strombolian explosions with MEDIUM acoustic pressures (max 0.31 bar), located at the NE and SW crater sectors. The degassing activity (puffing/spattering), located at the SW sector, shows HIGH values (average of 50 mbar). The volcanic tremor has HIGH values. The number of VLP events is HIGH (15.1 events/hour). MODIS and VIIRS satellite images show MEDIUM thermal anomalies (max 24 MW). SO2 flux shows MEDIUM values (86 t/d). CO2 flux, evaluated using the C/S ratio of 10.87, measured on 30/05/2026 at 03:20 UTC, is LOW (180 t/d). The number of rockfalls is HIGH (12 events detected in the last 24h, with LOW pseudo-volumes involved). The volcanic activity index is HIGH.