Teo Blašković founded The Watchers in 2011 and edited it until 2026, covering seismic and volcanic activity, extreme weather, space weather and near-Earth objects. Articles on this page are his archive.

  • The Weekly Volcanic Activity Report: September 16 – 22, 2020

    New activity/unrest was reported for 3 volcanoes from September 16 to 22, 2020. During the same period, ongoing activity was reported for 13 volcanoes. New activity/unrest: Erta Ale, Ethiopia | Pavlof, United States | Sangay, Ecuador. Ongoing activity: Aira, Kyushu…

  • Rare M4.4 earthquake hits Reunion, one of the largest on record

    A rare earthquake measuring M4.4 on the Richter scale hit 23 km (14 miles) NW of Saint-Denis, Reunion at 17:00 UTC on September 21, 2020. RNS is reporting a depth of 27 km (17 miles). This is the largest earthquake to hit the island since 1979 when Piton de la…

  • Increased seismicity at Pavlof volcano, Alaska

    Seismic activity at Pavlof volcano has increased on September 21, 2020, prompting the Alaska Volcano Observatory (AVO) to raise the Aviation Color Code to Yellow and Alert Level to Advisory. While this does not necessarily mean that an eruption is likely or…

  • Strombolian activity at Mount Etna, Italy

    Strombolian activity with sporadic ash emissions continues intermittently at Mount Etna's 'saddle crater' since around July 10, 2020. ​The image below shows strombolian activity at the newest crater, referred to as the 'cono della sella'…