Rapid intensification is defined as an increase in a tropical cyclone's maximum sustained winds of at least 30 knots (35 mph or 56 kph) within 24 hours.
October 28, 2025
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definition
Meteorological definition used to characterize quickly strengthening tropical cyclones.
Very warm ocean waters combined with slow movement of a tropical cyclone can promote rapid intensification, potentially allowing the cyclone to reach major hurricane strength (Category 3â5).
October 23, 2025
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process
Meteorological processes linking ocean heat content and cyclone translation speed to intensification.