Overview

• NHC named the far‑north Atlantic system Subtropical Storm Karen early Friday, marking the 11th named storm of the 2025 season.
• At 09:00 UTC, the center was about 915 km (570 miles) north-northwest of the Azores with a minimum pressure near 998 mb.
• Maximum sustained winds were near 45 mph, with a relatively broad wind field characteristic of a subtropical system.
• Guidance indicates a northeast acceleration over colder waters and a transition to an open trough or other post-tropical remnant within about two days.
• No coastal watches or warnings are in effect, and forecasters expect no hazards to land.