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, 1 bar (standard values <1 bar). The amplitude of puffing is low, ~30 mbar.

Tiltmeters analysis recorded at 3:00 UTC an infation signal with a duration of 4 minutes related to a major explosion

Thermal activity of explosive events is low. The number of thermal transients in the NE sector of the crater (standard = 100) is low, 59. The amplitude of thermal transients is low, 10 ºF. Exit velocity of pyroclasts, estimated through thermal camera analysis, is medium, 26 m/s.

MODIS thermal anomalies are not available.

Rockfall activity is low. The number of rockfalls is 4 per day.

SO₂ flux in the NE sector of the crater terrace is low, 66 t/d

CO₂ flux based on the C/S of 19.9 mesured at 20:20 UTC on 2020/07/18 is low, 66 t/d

Indice di Attività Vulcanica: medium

• Seismic (VLP) rate HIGH
• Seismic tremor MEDIUM
• Puffing LOW
• Acustic pression of explosions MEDIUM
• Thermal activity LOW
• SO₂ flux LOW
• CO₂ flux LOW
• Rockfall activity LOW

At 03:00:45 UTC today the monitoring network system has recorded a major explosion with a inflation signal of 3,5 µrad and duration of 4 minutes, the acoustic pressure related to the event is 8 bar and located at Central/SW vent,