Emissions of gas and steam plumes from Ambae volcano visible from webcam on 4 May (image: VMGD)
The Vanuatu Meteorology and Geohazards Department (VMGD) reported about slight increase of a seismic unrest at the volcano.
The increased activity follows gas and steam plumes (so-called degassing) observed by monitoring webcams on 4 and 5 May, which continue from the summit vent within the crater lake Voui.
The warning bulletin states about 2 km Danger Zone A around summit vents including danger zone area of flowing creeks as can be seen in Ambae caldera safety map.
The Volcanic Alert Level remains at Level 1
Aoba, also known as Ambae, is a massive 2500 cu km basaltic shield volcano that is the most voluminous volcano of the New Hebrides archipelago.
Source: Vanuatu Meteorology and Geohazards Department volcano activity update 6 May 2021
Ambae caldera safety map (image: VMGD)