Subtropical Storm Karen forms in the Atlantic Ocean north of the Azores, becoming the eleventh named storm of the 2025 hurricane season. A subtropical cyclone is a system that has both tropical and extratropical features. Details: This animation contains the visible (band 2) product from the GOES-19 weather satellite. It spans the nine-and-a-half hour period from 09:00 UTC to 18:40 UTC on 2025-10-10. | Cooperative Institute for Research in the Atmosphere

The intensity of a cyclone is described according to a numerical scale of 1 – 5, with 5 being the highest category. Watch this video to understand cyclone categories and impacts. For the latest forecast and warning information on Severe Tropical Cyclone Ilsa, expected to cross the coast between Port Hedland and Bidyadanga in Western Australia Thursday night or Friday morning, visit our website: http://ow.ly/55A650NHKT3 Know your weather. Know your risk. | Bureau of Meteorology