 The season's activity was reflected with a low accumulated cyclone energy (ACE) rating of 45. 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. It is only calculated for full advisories on tropical systems at or exceeding 39 mph (63 km / h), which is tropical storm intensity.
