Season Activity
The season's activity was reflected with a accumulated cyclone energy (ACE) rating of 110. ACE is, broadly speaking, a measure of the power of the hurricane multiplied by the length of time it existed, so storms that last a long time, as well as particularly strong hurricanes, have high ACEs. ACE is only calculated for full advisories on tropical systems at or exceeding 34 knots (39 mph, 63 km/h) or tropical storm strength. Subtropical cyclones, including the latter portion of Allison and the initial portions of Karen, Noel, and Olga, are excluded from the total.
Read more about this topic: 2001 Atlantic Hurricane Season
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