East Pacific ACE
Accumulated Cyclone Energy is also used in the eastern and central Pacific Ocean. Data on ACE is considered reliable starting with the 1971 season. The season with the highest ACE since 1971 is the 1992 season. The 1977 season has the lowest ACE. The most recent above-normal season is the 2006 season, the most recent near-normal season is the 2011 season, and the most recent below normal season is the 2010 season. The 35 year median 1971–2005 is 115 x 104kt2 (100 in the EPAC zone east of 140°W, 13 in the CPAC zone); the mean is 130 (112 + 18).
The (unofficial) categorisation of seasons for this table is based mutatis mutandis on that used in the Atlantic basin:
- Above-normal season: An ACE value above 135 (117% of the median), provided at least two of the following three parameters exceed the long-term average: number of tropical storms (16), hurricanes (9), and major hurricanes (4).
- Near-normal season: neither above-normal nor below normal
- Below-normal season: An ACE value below 86 (75% of the median)
| Season | ACE | TS | HR | MH | Classification |
|---|---|---|---|---|---|
| 1992 Pacific hurricane season | 290 | 28 | 16 | 10 | Above normal |
| 1990 Pacific hurricane season | 249 | 21 | 16 | 6 | Above normal |
| 1978 Pacific hurricane season | 207 | 19 | 14 | 7 | Above normal |
| 1983 Pacific hurricane season | 206 | 21 | 12 | 8 | Above normal |
| 1993 Pacific hurricane season | 201 | 15 | 11 | 9 | Above normal |
| 1984 Pacific hurricane season | 193 | 21 | 13 | 7 | Above normal |
| 1985 Pacific hurricane season | 192 | 24 | 13 | 8 | Above normal |
| 1994 Pacific hurricane season | 185 | 20 | 10 | 5 | Above normal |
| 1991 Pacific hurricane season | 178 | 14 | 10 | 5 | Above normal |
| 1997 Pacific hurricane season | 167 | 19 | 9 | 7 | Above normal |
| 1982 Pacific hurricane season | 161 | 23 | 12 | 5 | Above normal |
| 2006 Pacific hurricane season | 155 | 19 | 11 | 6 | Above normal |
| 1971 Pacific hurricane season | 139 | 18 | 12 | 6 | Above normal |
| 1972 Pacific hurricane season | 136 | 14 | 8 | 4 | Near normal |
| 1998 Pacific hurricane season | 134 | 13 | 9 | 6 | Near normal |
| 1987 Pacific hurricane season | 132 | 20 | 10 | 4 | Near normal |
| 1988 Pacific hurricane season | 127 | 15 | 7 | 3 | Near normal |
| 2009 Pacific hurricane season | 125 | 20 | 8 | 5 | Near normal |
| 2002 Pacific hurricane season | 124 | 15 | 8 | 6 | Near normal |
| 1976 Pacific hurricane season | 121 | 15 | 9 | 5 | Near normal |
| 2011 Pacific hurricane season | 118 | 11 | 10 | 6 | Near normal |
| 1973 Pacific hurricane season | 114 | 12 | 7 | 3 | Near normal |
| 1975 Pacific hurricane season | 112 | 17 | 9 | 4 | Near normal |
| 1989 Pacific hurricane season | 110 | 17 | 9 | 4 | Near normal |
| 1986 Pacific hurricane season | 107 | 17 | 9 | 3 | Near normal |
| 1995 Pacific hurricane season | 100 | 10 | 7 | 3 | Near normal |
| 2012 Pacific hurricane season | 98 | 17 | 10 | 5 | Currently active |
| 2005 Pacific hurricane season | 96 | 15 | 7 | 2 | Near normal |
| 2000 Pacific hurricane season | 95 | 19 | 6 | 2 | Near normal |
| 1974 Pacific hurricane season | 90 | 18 | 11 | 3 | Near normal |
| 2001 Pacific hurricane season | 90 | 15 | 8 | 2 | Near normal |
| 1999 Pacific hurricane season | 90 | 9 | 6 | 2 | Near normal |
| 2008 Pacific hurricane season | 83 | 15 | 7 | 2 | Below normal |
| 1980 Pacific hurricane season | 77 | 14 | 7 | 3 | Below normal |
| 1981 Pacific hurricane season | 72 | 15 | 8 | 1 | Below normal |
| 2004 Pacific hurricane season | 71 | 12 | 6 | 3 | Below normal |
| 1979 Pacific hurricane season | 57 | 10 | 6 | 4 | Below normal |
| 2003 Pacific hurricane season | 56 | 16 | 7 | 0 | Below normal |
| 1996 Pacific hurricane season | 53 | 9 | 5 | 2 | Below normal |
| 2007 Pacific hurricane season | 53 | 11 | 4 | 1 | Below normal |
| 2010 Pacific hurricane season | 49 | 8 | 3 | 2 | Below normal |
| 1977 Pacific hurricane season | 22 | 8 | 4 | 0 | Below normal |
Mean 1971-2009: 127.07
Median 1971-2009: 114
Calculations from Eastern North Pacific Tracks File at NHC Broken link
Read more about this topic: Accumulated Cyclone Energy
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—Ralph Waldo Emerson (1803–1882)
“American future lies in the East. The great free markets of the Pacific Rim are the American destiny.”
—Donald Freed, U.S. screenwriter, and Arnold M. Stone. Robert Altman. Richard Nixon (Philip Baker Hall)
“I do not object to Gladstone’s always having the ace of trumps up his sleeve, but only to his pretence that God had put it there.”
—Henry Labouchere (1831–1912)