The number of VLP seismic events (standard values 5-12) is medium, 8.1 events/hour.

The amplitude of seismic tremor is medium.

The infrasonic activity is medium. The acoustic pressure of explosions is low, 0.7 bar (standard values <1 bar). The amplitude of puffing is low, ~40 mbar.

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

Thermal activity of explosive events is low. 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 very high. The number of rockfalls is 54 per day.

SO₂ flux in the NE sector of the crater terrace is very high, 263 t/d

CO₂ flux based on the C/S is not available

Indice di Attività Vulcanica: very high

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

The volcanic activity is generally characterized by feeble degassing activity and few explosions with LOW pressure located at the new NE crater sector. In the last 24h, the Stromboli volcano showed a MEDIUM degassing activity (about 40 mbar). The explosive activity is MEDIUM (few explosion with max acoustic pressure 0.7 bar). No thermal transients (number of explosions) recorded. The volcanic tremor shows MEDIUM values. The number of VLP events showed MEDIUM values (8.1 events/hour). MODIS/VIIRS images showed NO thermal anomalies. SO2 flux increases to VERY HIGH values (last: 263 t/d recorded on the 28/07/2024), CO2 flux shows no new data (last: 1034 t/d based on C/S value of 4.7 recorded on the 27/07/2024). The rockfall activity is VERY HIGH (54 events detected with LOW pseudo-volumes associated). The volcanic activity index is VERY HIGH.