The number of VLP seismic events (standard values 5-12) is high, 16.4 events/hour.

The amplitude of seismic tremor is high.

The infrasonic activity is medium. The acoustic pressure of explosions is medium, 0.7 bar (standard values <1 bar). The amplitude of puffing is medium, ~41 mbar.

Tiltmeters analysis shows a ground deflation of 0.28 microradiants from 07:32 UTC of today

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: 56 MW (07:45 UTC yesterday).

Rockfall activity is medium. The number of rockfalls is 13 per day.

SO₂ flux in the NE sector of the crater terrace is medium, 106 t/d

CO₂ flux based on the C/S is not available

Indice di Attività Vulcanica: high

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

The volcanic activity is generally characterized by strombolian explosions and degassing (puffing/spattering) located at SW and NE crater sectors. In the last 24h, the Stromboli volcano showed a MEDIUM degassing activity (puffing/spattering with values of about 90 mbar). The explosive activity is MEDIUM (max acoustic pressure 0.7 bar). The volcanic tremor shows HIGH values. The number of VLP events shows HIGH values (16.4 events/hour). MODIS/VIIRS thermal data shows MEDIUM thermal anomalies. SO2 flux shows MEDIUM values (last: 113 t/d), with an increasing trend in the last 24 hours. No new measures of CO2 flux in last 24 hours are available. The rockfall activity is MEDIUM (13 event detected with LOW pseudo-volumes associated).Lava flow from NE crater is recorded from 07:32 UTC of today which is related to ground deflation of 0.28 micraradiants measured by the OHO tilt. The volcanic activity index is HIGH.