Bulletin n. 7695
05/04/2026 - 10:00
The number of VLP seismic events (standard values 5-12) is high, 13.1 events/hour.
The amplitude of seismic tremor is medium.
The infrasonic activity is medium. The acoustic pressure of explosions is medium, 0.82 bar (standard values <1 bar). The amplitude of puffing is medium, ~40 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 medium: 20 MW (11:24 UTC yesterday).
Rockfall activity: no rockfalls detected.
SO2 flux in the NE sector of the crater terrace is low, 66 t/d
CO2 flux based on the C/S of 7.66 mesured at 07:20 UTC on 2026/04/05 is medium, 865 t/d
Indice di Attività Vulcanica: medium
- Seismic (VLP) rate HIGH
- Seismic tremor MEDIUM
- Puffing MEDIUM
- Acustic pression of explosions MEDIUM
- Thermal activity NOT AVAILABLE
- SO2 flux LOW
- CO2 flux MEDIUM
- Rockfall activity LOW
In the last 24h, the volcanic activity is characterized by Strombolian explosions with MEDIUM acoustic pressures (max 0.82 bar), located at the NE crater sector. The degassing activity (puffing/spattering), located at the SW sector, shows MEDIUM values (average of 40 mbar). The volcanic tremor has MEDIUM values. The number of VLP events is HIGH (13.1 events/hour). MODIS and VIIRS satellite images show MEDIUM thermal anomalies (max 20 MW). SO2 flux shows LOW values (66 t/d). CO2 flux, evaluatd using the C/S ratio of 7.66, measured on 05/04/2026 at 07:20 UTC, is MEDIUM (865 t/d). The number of rockfalls is LOW (no events detected in the last 24h). The volcanic activity index is MEDIUM.