Daily Reports | LGS

Daily Reports

Bulletin n. 7699

09/04/2026 - 09:31

The number of VLP seismic events (standard values 5-12) is high, 12.8 events/hour.

The amplitude of seismic tremor is high.

The infrasonic activity is high. The acoustic pressure of explosions is medium, 0.81 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 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: 21 MW (02:05 UTC yesterday).

Rockfall activity is low. The number of rockfalls is 3 per day.

SO2 flux in the NE sector of the crater terrace is medium, 121 t/d

CO2 flux based on the C/S is not available

Indice di Attività Vulcanica: medium

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

In the last 24h, the volcanic activity is characterized by Strombolian explosions with MEDIUM acoustic pressures (max 0.81 bar), located at the NE crater sector. 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 (12.8 events/hour). MODIS and VIIRS satellite images show MEDIUM thermal anomalies (max 21 MW). SO2 flux shows MEDIUM values (121 t/d). No new data of CO2 flux are available. The number of rockfalls is LOW (3 events detected in the last 24h, with LOW pseudo-volumes involved). The volcanic activity index is MEDIUM.