The number of VLP seismic events (standard values 5-12) is medium, 11.1 events/hour.

The amplitude of seismic tremor is medium.

The infrasonic activity is medium. The acoustic pressure of explosions is low, 0.21 bar (standard values <1 bar). The amplitude of puffing is low, ~20 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: no thermal anomalies.

Rockfall activity is low. The number of rockfalls is 5 per day.

SO₂ flux in the NE sector of the crater terrace is not available

CO₂ flux based on the C/S of 14.78 mesured at 04:20 UTC on 2024/04/02 is medium, 1260 t/d

Indice di Attività Vulcanica: medium

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

The volcanic activity is characterized by a few and low strombolian explosions located at NE crater and degassing activity (puffing) located at SW sector. In the last 24h Stromboli volcano shows explosive activity with general MEDIUM acoustic pressure (max 0.21 bar) and MEDIUM degassing activity (puffing 20 mbar). The number of VLP events shows MEDIUM values (11.1 events/hour). Thermal activity by cameras is not evaluable due to technical problems. The volcanic tremor is MEDIUM. MODIS/VIIRS images show no new thermal anomalies. SO2 flux is not available due to bad viewing conditions. CO2 flux show MEDIUM values (1260 t/d), based on a C/S ratio of 14.78 measured on 02/04 at 04.20 UTC. Rockfall activity show LOW values, with 5 rockfalls events associated to LOW seismic energy. The volcanic activity index is MEDIUM.