Accumulated Cyclone Energy (ACE) Rating
| ACE (104 kt2) – Storm | |||||
|---|---|---|---|---|---|
| 1 | 44.75 | Trudy | 12 | 6.57 | Lowell |
| 2 | 33.08 | Marie | 13 | 5.30 | Elida |
| 3 | 30.57 | Hernan | 14 | 5.12 | Boris |
| 4 | 21.9 | Iselle | 15 | (4.93) | Aka |
| 5 | 18.36 | Odile | 16 | 4.61 | Alma |
| 6 | 12.65 | Julio | 17 | 3.78 | Cristina |
| 7 | 11.68 | Genevieve | 18 | 3.67 | Simon |
| 8 | 10.37 | Vance | 19 | 3.36 | Douglas |
| 9 | 9.72 | Kenna | 20 | 2.51 | Rachel |
| 10 | 7.97 | Norbert | 21 | 1.96 | Polo |
| 11 | 6.59 | Fausto | |||
| Total= 245.52 (4.93) | |||||
The table on the right shows the ACE for each storm in the season. 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.
The figures in parentheses are for storms in the Central Pacific basin west of 140°W; those not in parenthesis are for the Eastern Pacific basin.
The cumulative ACE for the Eastern Pacific this season fell within the official "Above Normal" grading, being one of the most active. This occurred because the season had many intense storms that lasted for a long period of time. Also it is important to note that this is the second highest ACE, only behind the 1992 Pacific hurricane season.
Read more about this topic: 1990 Pacific Hurricane Season
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