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.

  • Spectacular explosions at Krakatoa volcano, Indonesia

    Some of the most dramatic footage yet of the explosions on collapsed Anak Krakatau, where the vent now is under water and lets water interact violently with rising magma: so-called Surtseyan activity, a type of volcanic eruption that takes place in shallow seas or…

  • Lewotolo volcano Alert Level raised, Indonesia

    Indonesian authorities have raised the Alert Level for Lewotolo stratovolcano, East Nusa Tenggara from 1 to 2 (on a scale of 1 – 4). The Aviation Color Code remains Yellow. The last eruption of this volcano took place in 2012. The decision to raise the alert level…

  • Asteroid 2018 YO2 flew past Earth at 0.51 lunar distances

    A small asteroid designated 2018 YO2 flew past Earth at a distance of 0.51 LD / 0.00131 AU (195 973 km / 121 772 miles) on December 28, 2018. This object belongs to the Apollo group of asteroids. It was first observed at Palomar Mountain, ZTF on December 29, 2018,…

  • Tornado kills 1, damages 165 homes in West Java, Indonesia

    A strong tornado swept through West Java, Indonesia on December 30, 2018, killing one person and damaging 165 homes. The tornado touched down in Panguragan Kulon village in Panguragan, Cirebon around 15:30 local time, Sunday. According to Sutopo Purwo Nugroho,…