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.

  • Comprehensive preparations for a possible eruption of Mount Fuji, Japan

    Japan’s National Police Agency (NPA) has started making comprehensive preparations for a possible eruption of Mount Fuji (Fujisan) – the country’s highest and most noted volcano, located 100 km (62 miles) SW of Tokyo. Its last known eruption took place in December 1707 (VEI 5), spewing ash for more than 2 weeks, with a few centimeters accumulating in the city of Edo, present-day Tokyo.

  • Large temperature contrast during record-breaking June heatwave fuels severe thunderstorms, Europe

    Large swaths of Europe experienced an early-season heatwave over the weekend, with temperatures more than 40 to 43 °C (104 – 110 °F) and numerous daily, monthly and all-time records broken. As those records were falling, a sharp temperature contrast first observed in the UK and NW Germany, fueled severe thunderstorms which are forecast to impact an area from France to Serbia on June 20 and 21.