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Atlantic hurricanes form in the Atlantic Ocean primarily between June and November, developing from organized cloud/thunderstorm systems over tropical or subtropical waters with closed low-level circulation.
An Atlantic hurricane is a tropical cyclone that forms in the Atlantic Ocean, primarily between June and November. It develops from organized systems of clouds and thunderstorms over tropical or subtropical waters, with a closed low-level circulation around a low-pressure center. The term “hurricane” is used in the North Atlantic (as opposed to “typhoon” in the Western Pacific). Formation is most common in warm ocean waters several hundred miles north of the equator near the Intertropical Convergence Zone, where tropical waves can trigger cyclogenesis. The Coriolis force is generally too weak near the equator to initiate sufficient rotation, so formation typically occurs farther north. Common formation regions include the Gulf of Mexico, the Caribbean, the tropical Atlantic Ocean, and as far east as the Cape Verde Islands (Cape Verde hurricanes). Storms can also intensify over the Gulf Stream when sea-surface temperatures exceed about 26.5°C (79.7°F). Occasionally, cyclones form farther north and east through baroclinically induced processes (e.g., disturbances like cold fronts and upper-level lows) rather than classic tropical-wave initiation.
Atlantic hurricanes form in the Atlantic Ocean primarily between June and November, developing from organized cloud/thunderstorm systems over tropical or subtropical waters with closed low-level circulation.
Most storms originate from tropical waves in warm waters north of the equator near the Intertropical Convergence Zone, where the Coriolis force is strong enough to support rotation.
Frequent formation regions include the Gulf of Mexico, Caribbean, tropical Atlantic, and the Cape Verde Islands; storms may strengthen over the Gulf Stream when sea-surface temperatures exceed ~26.5°C.
Some storms form farther north/east via baroclinically induced cyclogenesis caused by non-tropical disturbances such as cold fronts and upper-level lows.
The process by which a tropical cyclone forms and develops organized rotation and a closed low-level circulation.
A near-equatorial region of converging trade winds where tropical disturbances often originate and where cyclogenesis can occur once conditions are favorable.
An apparent force caused by Earth’s rotation that helps impart and maintain the cyclonic rotation needed for tropical cyclone development away from the equator.
An Atlantic hurricane that forms from disturbances near the Cape Verde Islands and often develops after moving westward over warm ocean waters.
A warm ocean current whose elevated sea-surface temperatures can support strengthening of tropical cyclones when they move over it.
Tropical cyclone formation driven by temperature gradients and non-tropical disturbances (such as cold fronts or upper-level lows) rather than by tropical waves alone.
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