• Elevated activity, increased sulfur dioxide output at Nyamulagira volcano, DR Congo

    ByTeo Blašković

    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.

  • Planchón-Peteroa volcano enters new eruptive phase, Chile–Argentina border

    ByTeo Blašković

    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.

  • Record-high effusion rate measured during episode 36 of Kīlauea’s Halemaʻumaʻu eruption

    ByTeo Blašković

    Episode 36 of the ongoing Halemaʻumaʻu eruption at Kīlauea volcano, Hawaiʻi, ended at 16:16 LT on November 9 (02:16 UTC, November 10), 2025, after just under 5 hours of continuous fountaining. The event produced record-high lava effusion rates of around 500 m³/s (650 yd³/s) and built fountains up to 330 m (1 100 feet) high, covering 60–80% of the Halemaʻumaʻu crater floor.

  • Observation flight confirms new ash emissions at White Island volcano

    ByTeo Blašković

    Minor ash emissions were confirmed at Whakaari / White Island, New Zealand, following two short-lived eruptions on October 30, 2025. The Volcanic Alert Level remains at 3 and the Aviation Color Code at Orange, indicating minor eruptive activity with uncertain future development. An observation flight on November 3 confirmed an ash plume rising 400–500 m (1 300–1 600 feet) above sea level, drifting southeast for 5–8 km (3–5 miles).

  • PHIVOLCS reports multiple short-lived eruptions at Taal volcano

    ByTeo Blašković

    Four short-lived eruptions were recorded at the northeastern portion of the Taal Main Crater between October 25 and 26, 2025, producing dense plumes 1 200–2 100 m (3 900–6 900 feet) high and minor ashfall over nearby barangays in Laurel and Agoncillo, Batangas Province. PHIVOLCS classified the events as minor phreatic and phreatomagmatic eruptions, with associated shockwaves and localized pyroclastic density currents, but maintained Alert Level 1 (low-level unrest) over the volcano.

  • Strong earthquake swarm shakes Katla volcanic system beneath Mýrdalsjökull, Iceland

    ByTeo Blašković

    A strong seismic swarm began beneath Iceland’s Mýrdalsjökull glacier, part of the Katla volcanic system, around 10:30 UTC on October 20, 2025. Several earthquakes above magnitude 3 were recorded, the largest reaching M4.5 at 10:51 UTC. The Icelandic Meteorological Office reports no felt activity and no changes in river levels, conductivity, or deformation, indicating no immediate signs of eruption at the Katla volcano or glacial flooding.

  • Record lava fountains reach 460 m (1 500 feet) during episode 35 of Kīlauea summit eruption, Hawai‘i

    ByTeo Blašković

    Episode 35 of the ongoing Halemaʻumaʻu eruption at Kīlauea volcano began at 20:05 HST on October 17, 2025 (06:05 UTC on October 18), producing simultaneous fountains from the north and south vents that reached record heights of approximately 460 m (1 500 feet). The eruption cloud rose above 6 000 m (20 000 feet) while lava flows remained contained within the crater.

  • Fine ash emissions and increased tremor at Planchón-Peteroa, Chile–Argentina

    ByTeo Blašković

    The Argentine Geological and Mining Service (SEGEMAR) reported increased surface activity at the Planchón-Peteroa volcanic complex starting at 01:00 LT (04:00 UTC) on October 3, 2025, including emissions of fine volcanic ash rising up to 250 m (820 feet) above the crater. The technical alert remains at Yellow, with continued binational monitoring by SEGEMAR and Chile’s National Geology and Mining Service (SERNAGEOMIN).