Accumulated Cyclone Energy (ACE)

The chart at right shows the Accumulated Cyclone Energy (ACE) for each storm in the season. ACE is a measure of the power of the hurricane multiplied by the length of time it existed, the storms have passed a long-term as well as particularly strong hurricanes, have high ACE. ACE is calculated only for tropical systems in more than 34 knots (39 mph, 63 kilometers per hour) or tropical storm strength.
Figures in parentheses indicate the storms in the central Pacific Ocean west of 140A W, the other indices to those in the eastern Pacific Ocean.

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