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.
A strong and shallow earthquake registered by the USGS as M6.3 hit near Dalupiri Island, Babuyan Islands Region, Philippines at 11:03 UTC on September 12, 2023. The agency is reporting a depth of 41.3 km (25.6 miles). EMSC is reporting M6.3 at a depth of 37 km (22.9 miles).
A strong earthquake registered by the USGS as M6.0 hit Halmahera, Indonesia at 12:51 UTC on September 11, 2023. The agency is reporting a depth of 162.5 km (100.1 miles). EMSC is reporting M6.0 at a depth of 157 km (97.5 miles).
On September 10, 2023, the European Sentinel-2 satellite captured high-quality images of massive flooding in central Greece after extremely heavy rains dropped by Storm Daniel over the past week.
At 01:15 UTC on September 11, 2023 (15:15 HST, September 10), the USGS Hawaiian Volcano Observatory (HVO) identified new eruptive activity at Kīlauea’s summit within Hawai‘i Volcanoes National Park, based on webcam images and field reports. The eruption was preceded by intense seismic activity and rapid uplift at the summit.
Medicane “Marquesa” — a Mediterranean tropical-like cyclone, made landfall in Libya at 01:30 UTC on September 10, 2023, causing severe flash flooding in Benghazi and neighboring region.
A very bright fireball entered Earth’s atmosphere over Bariloche, Argentina, and disintegrated in a series of bright flashes around 03:36 UTC on September 9, 2023. The event lasted up to 5 seconds.
A shallow earthquake registered by the USGS as M6.0 hit Sulawesi, Indonesia at 14:43 UTC on September 9, 2023. The agency is reporting a depth of 9.9 km (6.2 miles). EMSC is reporting the same magnitude and depth.
A strong and shallow earthquake registered by the USGS as M6.8 hit Morocco’s High Atlas mountains at 22:11 UTC on Friday, September 8, 2023. The quake hit at 23:11 local time at a depth of 18.6 km (11.5 miles). EMSC is reporting M6.9 at a depth of 10 km (6.2 miles).
Extremely heavy rains brought by the remnants of Typhoon “Haikui” caused severe floods across Hong Kong on September 8, 2023, causing widespread disruption, evacuations, and leading to at least two fatalities.
A strong earthquake registered by the USGS as M6.6 hit south of the Kermadec Islands, New Zealand at 09:09 UTC on September 8, 2023. The agency is reporting a depth of 89.8 km (55.8 miles). EMSC is reporting M6.6 at a depth of 32 km (20 miles).
