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Hurricane John was the eleventh named storm, seventh hurricane, and fifth major hurricane of the 2006 Pacific hurricane season. Hurricane John developed on August 28 from a tropical wave to the south of Mexico. Favorable conditions allowed the storm to intensify quickly, and it attained peak winds of 135 mph (215 km/h) on August 30. Eyewall replacement cycles and land interaction with western Mexico weakened the hurricane, and John made landfall on southeastern Baja California Sur with winds of 110 mph (180 km/h) on September 1. It slowly weakened as it moved northwestward through the Baja California peninsula, and dissipated on September 4. Moisture from the remnants of the storm entered the southwest United States. The hurricane threatened large portions of the western coastline of Mexico, resulting in the evacuation of tens of thousands of people. In coastal portions of western Mexico, strong winds downed trees, while heavy rain resulted in mudslides. Hurricane John caused moderate damage on the Baja California peninsula, including the destruction of more than 200 houses and thousands of flimsy shacks. The hurricane killed five people in Mexico, and damage totaled $663 million (2006 MXN, $60.8 million 2006 USD). In the southwest United States, moisture from the remnants of John produced heavy rainfall. The rainfall aided drought conditions in portions of northern Texas, although it was detrimental in locations that had received above-normal rainfall throughout the year. ==Meteorological history== The tropical wave that would become John moved off the coast of Africa on August 17. It entered the eastern Pacific Ocean on August 24, and quickly showed signs of organization. That night, Dvorak classifications were initiated on the system while it was just west of Costa Rica, and it moved west-northwestward at 10–15 mph (15–25 km/h). Conditions appeared favorable for further development, and convection increased late on August 26 over the area of low pressure. Early on August 27, the system became much better organized about 250 miles (400 km) south-southwest of Guatemala, although convection remained minimal. Early on August 28, banding increased within its organizing convection, and the system developed into Tropical Depression Eleven-E. Due to low amounts of vertical shear, very warm waters, and abundant moisture, steady intensification was forecast,〔 and the depression strengthened to Tropical Storm John later on August 28. Deep convection continued to develop over the storm, while an eye feature developed within the expanding central dense overcast. The storm continued to intensify, and John attained hurricane status on August 29 while 190 miles (305 km) south-southeast of Acapulco. Banding features continued to increase as the hurricane moved west-northwestward around the southwest periphery of a mid- to upper-level ridge over northern Mexico. The hurricane underwent rapid intensification, and John attained major hurricane status 12 hours after becoming a hurricane.〔 Shortly thereafter, the eye became obscured, and the intensity remained at 115 mph (185 km/h) due to an eyewall replacement cycle. Another eye formed, and based on Reconnaissance data, the hurricane attained Category 4 status on the Saffir-Simpson Hurricane Scale on August 30 about 160 miles (260 km) west of Acapulco, or 95 miles (155 km) south of Lázaro Cárdenas, Michoacán. Hours later, the hurricane underwent another eyewall replacement cycle, and subsequently weakened to Category 3 status as it paralleled the Mexican coastline a short distance offshore. Due to land interaction and its eyewall replacement cycle, Hurricane John weakened to a 105 mph (170 km/h) hurricane by late on August 31,〔 but restrengthened to a major hurricane shortly after as its eye became better defined. After completing another eyewall replacement cycle, the hurricane again weakened to Category 2 status, and on September 1 it made landfall on Cabo del Este on the southern tip of Baja California Sur with winds of 110 mph (180 km/h). John passed near La Paz as a weakening Category 1 hurricane on September 2,〔 and weakened to a tropical storm shortly thereafter over land. John continued to weaken, and late on September 3 the system deteriorated to a tropical depression while still over land. By September 4, most of the convection decoupled from the circulation towards mainland Mexico, and a clear circulation had not been discernible for 24 hours. Based on the disorganization of the system, the National Hurricane Center issued its last advisory on the system. 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「Hurricane John (2006)」の詳細全文を読む スポンサード リンク
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