The number of VLP seismic events (standard values 5-12) is high, 16.5 events/hour.

The amplitude of seismic tremor is medium.

The infrasonic activity is medium. The acoustic pressure of explosions is high, 1.3 bar (standard values <1 bar). The amplitude of puffing is medium, ~31 mbar.

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

Thermal activity of explosive events is not available. The number of thermal transients in the NE sector of the crater(standard = 100) is not available. The amplitude of thermal transients is not available. Exit velocity of pyroclasts, estimated through thermal camera analysis, is not available.

MODIS thermal anomalies are low: 9 MW (19:10 UTC yesterday).

Rockfall activity is high. The number of rockfalls is 17 per day.

SO₂ flux in the NE sector of the crater terrace is low, 65 t/d

CO₂ flux based on the C/S of 5.86 mesured at 13:20 UTC on 2026/07/31 is medium, 409 t/d

Indice di Attività Vulcanica: medium

• Seismic (VLP) rate HIGH
• Seismic tremor MEDIUM
• Puffing MEDIUM
• Acustic pression of explosions HIGH
• Thermal activity NOT AVAILABLE
• SO₂ flux LOW
• CO₂ flux MEDIUM
• Rockfall activity HIGH

In the last 24h, the volcanic activity is characterized by Strombolian explosions with amplitude have generally been on MEDIUM values with a few events reaching HIGH pressures (max 1.3 bar), located at the NE crater sector. The degassing activity (puffing/spattering), mainly located at the SW sector, shows MEDIUM values (average of 30 mbar). The volcanic tremor has MEDIUM values. The number of VLP events is HIGH (16.5 events/hour). MODIS and VIIRS satellite images show LOW thermal anomalies (9 MW). SO2 flux shows LOW values (65 t/d). CO2 flux, evaluated using the C/S ratio of 5.86, measured on 13:20 of 31/07/2026, is MEDIUM (283 t/d). The number of rockfalls is HIGH (17 events detected in the last 24h), with LOW pseudo-volumes involved. The Volcanic Activity Index is MEDIUM.