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The 1997 Pacific hurricane season was a very active hurricane season. With hundreds of deaths and hundreds of millions of dollars in damage, this season was the costliest and one of the deadliest Pacific hurricane seasons. This was due to a strong El Niño. The 1997 Pacific hurricane season officially started on May 15, 1997 in the eastern Pacific, and on June 1, 1997 in the central Pacific, and lasted until November 30, 1997. These dates conventionally delimit the period of each year when almost all tropical cyclones form in the northeastern Pacific Ocean. Several storms impacted land. The first was Tropical Storm Andres which killed four people and left another two missing. In August, Tropical Storm Ignacio took an unusual path, and its extratropical remnants caused minor damage in the Pacific Northwest and California. Linda became the most intense east Pacific hurricane in recorded history. Although it never made landfall, it produced large surf in Southern California and as a result five people had to be rescued. Hurricane Nora caused flooding and damage in the Southwestern United States, while Olaf made two landfalls and caused eighteen deaths and several other people were reported missing. Hurricane Pauline killed several hundred people and caused record damage in southeastern Mexico. In addition, Super Typhoons Oliwa and Paka originated in the region before crossing the International Date Line and causing significant damage in the western Pacific. There were also two Category 5 hurricanes: Linda and Guillermo. Activity in the season was above average. The season produced 17 named storms, which was a little above normal. The average number of named storms per year is 15. The 1997 season also had 10 hurricanes, compared to the average of 8. There were also 7 major hurricanes compared to the average of 4. ==Season summary== The 1997 Pacific hurricane season officially started on May 15, 1997 in the eastern Pacific, and on June 1, 1997 in the central Pacific, and lasted until November 30, 1997. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeastern Pacific Ocean. This season exceeded these boundaries appreciably, as Tropical Storm Paka formed December 2, and dissipated nineteen days later after crossing the International Dateline and then moved into the Western Pacific. The 1997 Pacific hurricane season was fairly active, due to the strong El Niño that was occurring at the time. El Niño causes wind shear to be reduced and water temperatures to increase, resulting in conditions more conductive for tropical cyclones in the East Pacific. There were 24 cyclones in total, including five unnamed tropical depressions. Of these, 19 were in the east Pacific (east of 140°W). Of these, eight peaked at tropical storm intensity, while ten reached hurricane status. Seven of these reached Category 3 intensity or higher on the Saffir-Simpson hurricane scale, including central Pacific cyclones Super Typhoons Oliwa and Paka, which became typhoons after crossing into the western Pacific. The first hurricane of the year was Hurricane Dolores, and the first major hurricane was Hurricane Enrique. Most months during the year had several storms,〔 but no records were set for storms in any particular month. Activity in the central Pacific was also above average. Two tropical storms formed, as did several tropical depressions. A number of storms moved in from the east. With a total of nine tropical cyclones entering or forming there, this was the fourth highest number since satellite observations began. The first storm formed on June 1. The last storm dissipated December 21, which gives this season the latest known end. However, if December 6, the date the last storm crossed the dateline is taken to be the end, this season has the second latest end, behind the 1983 season and tied with the 1957 season.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「1997 Pacific hurricane season」の詳細全文を読む スポンサード リンク
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