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.

  • Japan’s Asamayama volcano erupts, alert level remains at 2 of 5

    ​A small-scale eruption took place around 00:20 UTC on June 16 (09:20 JST) at Asamayama volcano located 140 km NW of capital Tokyo, Japan. Alert level remains at 2 since Thursday, June 11, as well as a 2-km exclusion zone around the crater. The Japan Meteorological

  • Departing Region 2360 produces M1.3 solar flare

    Solar activity is again reaching moderate levels today with 'beta-gamma' classified Region 2360 being the most productive. This region, located near the western limb, produced an M1.3 solar flare at 07:29 UTC on June 13. The event started at 07:20 and ended at 0

  • Large pyroclastic flows at Mount Sinabung, Indonesia

    A new set of moderate eruptions at Indonesia's Mount Sinabung volcano produced large pyroclastic flows on June 12 and 13, 2015, ten days after authorities raised the alert level to highest (4/4) and ordered evacuation of all people living within a 7-km radius.

  • Shallow M6.1 earthquake registered off the coast of Hihifo, Tonga

    A shallow M6.1 earthquake was registered by Geoscience Australia off the coast of Hihifo, Tonga at 11:07 UTC on June 12, 2015. The agency is reporting depth of 35 km (21.7 miles). Preliminary report by USGS mentions M6.3 at a depth of 28.6 km (17.8 miles).According to t

  • After Europe and Canada, noctilucent clouds expand to USA

    The 2015 northern hemisphere noctilucent clouds season started on May 19, 2015 when NASA's AIM spacecraft spotted a patch of electric blue clouds over the Artactic Circle. Since then, noctilucent clouds (NLCs) have been moving south and, on June 8 – 9, they…

  • Active volcanoes in the world: June 3 – 9, 2015

    New activity/unrest was observed at 10 volcanoes from June 3 – 9, 2015. During the same period, ongoing activity was observed at 14 volcanoes. New activity/unrest: Barren Island, Andaman Islands (India) | Concepcion, Nicaragua | Cotopaxi, Ecuador | Karangetang [Api Siau