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.
An impulsive solar flare measuring M7.3 at its peak time erupted from Region 2673 at 10:15 UTC on September 7, 2017. The event started at 10:11, peaked at 10:15 and ended at 10:18 UTC. It comes a day after two major X-class solar flares erupted from the same region….
The coronal mass ejection (CME) produced by the M5.5 solar flare on September 4, 2017 arrived at the DSCOVR spacecraft on September 6 at 23:08 UTC and at Earth 30 minutes later. The impact did not spark a geomagnetic storm, but the potential still exists as the CME…
The eye of Category 5 Hurricane "Irma" passed over the small Caribbean islands of Antigua and Barbuda, one of the most prosperous Caribbean nations, around 06:00 UTC on September 6, 2017 with maximum sustained winds of 298 km/h (185 mph). Irma then…
Tropical Storm "Katia" formed in the Bay of Campeche, near the coast of Mexico at 09:00 UTC on September 6, 2017 as the 11th named storm of the 2017 Atlantic hurricane season. The system is nearly stationary at this time, with its center located 165 km…
A major X-class solar flare erupted from geoeffective Active Region 2673 peaking as X9.3 at 12:02 UTC on September 6, 2017. The event started at 11:53, peaked at 12:02 and ended at 12:10 UTC. This is the second X-class solar flare of the day. It comes just hours…
A powerful, long-duration solar flare measuring X2.2 at its peak time erupted from geoeffective Active Region 2673 at 09:10 UTC on September 6, 2017. The event started at 08:48 and ended at 09:59 UTC. This is the first X-class solar flare since May 5, 2015. There…
A very bright fireball streaked across the night sky over British Columbia, Canada at 05:11 UTC on September 5, 2017 (22:11 PDT, September 4). The event lasted about 10 seconds and was followed by a sonic boom. The American Meteor Society (AMS) received 224 reports…
An asymmetric full halo Coronal Mass Ejection (CME) produced by the M5.5 solar flare at 20:33 UTC on September 4, 2017 is traveling toward Earth and is expected to arrive late on September 6. G3 – Strong geomagnetic storm watch is in effect for September 6 and 7….
Ecuador's Fernandina volcano, the most active of Galápagos volcanoes, entered a new eruptive phase at approximately 17:25 UTC (12:25 local time) on September 4, 2017. The eruption comes after 8 years of superficial calm. It was observed by the crew of…
NOAA and Air Force hurricane hunter aircraft data indicate Hurricane "Irma" has intensified into an extremely dangerous Category 5 hurricane on the Saffir-Simpson Hurricane Wind Scale with maximum winds of 280 km/h (175 mph) with higher gusts. Irma is…
