A visually impressive Strombolian eruption occurred at Fuego volcano in Guatemala on November 16, 2025, producing rhythmic explosions, incandescent ejections, and an ash plume rising to about 4 300 m (14 000 feet) above sea level.
A major eruption took place at Semeru volcano, Indonesia, on November 19, 2025, producing large pyroclastic flow and ash column up to 16.5 km (54,000 feet) above sea level. The Aviation Color Code was raised to Red while authorities issued exclusion zones along Besuk Kobokan.
Ash from the Whakaari/White Island caused multiple flight cancellations in parts of New Zealand on Tuesday, November 18, 2025, with the Whakatāne and Tauranga airports reporting severe service impacts due to the ash.
Multiple explosive eruptions at Sakurajima’s Minamidake crater in Kagoshima, Japan, on November 16, 2025, sent ash to about 4 400 m (14 400 feet) above sea level, prompting ashfall forecasts and flight cancellations at Kagoshima Airport.
A mud-volcano eruption occurred in Pingtung County, Taiwan, on November 12, 2025, producing five vents that expelled mud and flames up to 2 m (6.5 feet) high. Village authorities created diversion channels to prevent mud from entering nearby farmland.
Effusive eruption at Nyamuragira volcano, Democratic Republic of the Congo, continues at elevated levels. Sentinel-2 imagery from November 12, 2025, shows lava overflowing the northern rim of the caldera and extending about 6.5 km (4 miles) along the northwestern flank. On November 14, 2025, TROPOMI detected a high SO2 plume at approximately 15 km (49 200 feet) altitude, confirming intensified degassing linked to sustained magma supply.
A lava overflow began from Stromboli’s northern crater area on November 13, 2025, sending a confined lava flow down the upper Sciara del Fuoco.
A period of renewed eruptive activity occurred at Planchón-Peteroa volcanic complex on the Chile–Argentina border between late October and early November 2025. Volcanic Ash Advisory Center (VAAC) Buenos Aires issued multiple warnings for continuous ash emissions reaching altitudes of up to 4 600 m (15 000 feet). Local monitoring networks reported persistent degassing and minor explosions. The volcanic alert level remains at Yellow.
A short-lived tornado-like vortex formed above the lava fountains in Halemaʻumaʻu crater, Kīlauea volcano, Hawaiʻi, around noon on November 9, 2025, during Episode 36 of the ongoing summit eruption. The phenomenon, caused by intense heating and localized wind shear, was captured on video from within Hawaiʻi Volcanoes National Park.
A partial collapse occurred at Mount Merapi volcano, Central Java Province, Indonesia, on November 10, 2025, producing lava flows on its slopes. The event follows continuous volcanic activity observed in recent days, including a pyroclastic flow that traveled about 1 500 m (4 921 feet) southwest at 15:19 LT (08:19 UTC) on November 9, lasting 188.32 seconds. The volcano remains at Alert Level III (Siaga), and residents are advised to follow official safety recommendations.
