• Fifth eruption of the year at Piton de la Fournaise, Reunion

    The Piton de la Fournaise volcano erupted on October 25, 2019, for the fifth time this year. According to OVPF, the tremor corresponding with the arrival of the lava near the surface was recorded since 04:15 LT. The low lava flow front is over the Piton Tremblet, at…

  • Lava flows, large lahar at Shishaldin volcano, Alaska

    Satellite data from the past day show that lava now fills the Shishaldin's summit crater and is beginning to flow over the northern crater rim in two locations, the Alaska Volcano Observatory reported at 20:07 UTC on October 24, 2019. One 200 m (600 feet) long…

  • The Weekly Volcanic Activity Report: October 16 – 22, 2019

    New activity/unrest was reported for 3 volcanoes from October 16 to 22, 2019. During the same period, ongoing activity was reported for 12 volcanoes. New activity/unrest: Masaya, Nicaragua | Metis Shoal, Tonga Islands | Pavlof, United States. Ongoing activity: Aira,…

  • Explosive activity continues at Etna volcano, Italy

    Explosive activity continues at Etna's summit craters with strong degassing and rare ash emissions. Photos below were taken around 16:00 UTC on October 21 from the Taormina. They show emissions of ash from the Southeast Crater to the right, puffs of ash from…

  • Earthquake swarm in the Tjörnes Fracture Zone, Iceland

    A seismic swarm began on October 19, 2019, in Öxarfjörður, Tjörnes Fracture Zone, North Iceland. The swarm is located around 28 km (17 miles) WNW of Kópasker and Icelandic Met Office's (IMO) seismic network has detected roughly 500…

  • Small explosion signals at Pavlof volcano, alerts raised, Alaska

    Small explosion signals from Pavlof volcano have been detected on the infrasound network located at Sand Point and on the local seismic network on October 19, 2019. It is unknown if the explosions produced any volcanic ash, but their small size suggests any hazard…

  • Emission of steam and gas at Momotombo volcano, Nicaragua

    After further investigation, the plume seen in satellite and webcam looks more like water vapor and gases, the Washington VAAC reported at 16:14 UTC on October 18, 2019, shortly after receiving information about possible volcanic ash plume rising above Momotombo…

  • Shishaldin volcano alert levels raised, Alaska

    The Alaska Volcano Observatory (AVO) raised the Aviation Color Code for Shishaldin volcano to ORANGE and the Alert Level to WATCH on October 17, 2019. Satellite observations indicated that a lava effusion event began on October 13 and is likely continuing. The…