Smal amount of ash, gas and steam continues from the active vent of Whakaari/White Island (image: Geonet New Zealand)During an observation flight on 20 October 2026, the activity at Whakaari/White Island was confirmed to have transitioned from intermittent to continuous passive emission of steam, gas, and minor amounts of volcanic ash. Ash accumulation was observed around the active vent in the Main Crater and across parts of the crater floor and outer flanks. The discharge remained weak, with no evidence of explosive activity. However, the vent temperature had increased significantly from approximately 100°C to 395°C over the preceding week, while satellite observations detected daily SO₂ emissions.In response to the continuous ash emission, increased vent temperature, and potential increase in gas output, the Volcanic Alert Level was raised to Level 3 and the Aviation Colour Code to Orange. Minor ashfall was considered likely on and near the island, although no ash impacts had been reported on the mainland. The current activity was assessed as consistent with previous eruptive cycles at Whakaari, potentially continuing for several weeks.Despite the currently low-energy nature of the eruption, the possibility of rapid escalation with little or no warning remains. More explosive activity could generate ballistic projectiles, ash emissions, and pyroclastic surges, posing a threat to life in the Main Crater and offshore areas southeast of the island. Ashfall could also affect aircraft and vessels near the volcano, while significant impacts on the mainland remain very unlikely under the current conditions.Source: Geonet New Zealand Geologi volcano activity update 21 October 2026