"Subtropical Storm Karen has formed, becoming the 11th named storm of the 2025 Atlantic hurricane season and raising concerns along the US East Coast. Subtropical storms are hybrid systems, with characteristics of both tropical storms, which get energy from warm ocean waters, and extratropical storms, which draw power from temperature differences in the atmosphere. As of Friday morning, Karen remained embedded within a large upper-level low-pressure system, producing pockets of moderate thunderstorms, primarily on the eastern side of its compact circulation."
"The National Hurricane Center (NHC) reported that the storm is moving northeast at about 9mph and is expected to accelerate as it interacts with an approaching deep-layer trough from the west. Karen is traveling over cooler waters, with sea surface temperatures below 68°F, but frigid air aloft has allowed it to maintain some organized convection. However, meteorologists warn that environmental and oceanic conditions are becoming increasingly hostile, and the storm's days as a compact subtropical system are likely numbered."
Subtropical Storm Karen formed as the 11th named storm of the 2025 Atlantic hurricane season off the US East Coast. Karen remains embedded in a large upper-level low and has produced pockets of moderate thunderstorms mainly on its eastern side. The system is moving northeast near 9 mph and is forecast to accelerate as it encounters a deep-layer trough. Sea surface temperatures under Karen are below 68°F, though very cold air aloft has sustained some organized convection. Forecast models indicate loss of thunderstorms by early Saturday, followed by dissipation and absorption by a nearby front. More than 15 million residents from Georgia to Massachusetts are advised to prepare for heavy rain, high waves, and major flooding from a developing nor'easter.
Read at Mail Online
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