|
Tropical Depression Five-E was a tropical depression which made landfall along the south-western Mexican coastline in July 2008. It was the fifth tropical cyclone of the 2008 Pacific hurricane season. The depression developed out of a weak tropical wave which formed off the coast of Africa on June 23. The wave remained poorly organized throughout its journey through the Atlantic Ocean and Caribbean Sea. The wave entered the Eastern Pacific on July 2 after passing through Central America. The wave developed into an area of low pressure that afternoon. The low moved towards the northwest, paralleling the coastline. Continued development led to the eventual upgrade of the low to Tropical Depression Five-E on July 5. It was initially thought that the depression would become a tropical storm before landfall but the winds failed to increase above 35 mph (55 km/h). The depression made a turn towards the north-northwest and made landfall on July 7. It dissipated shortly after landfall due to the mountainous terrain. The depression produced heavy rainfall in parts of southwestern Mexico, peaking at . These rains triggered flooding that killed two people and left roughly MXN 30 million ($2.2 million) in damages. ==Meteorological history== Tropical Depression Five-E formed out of a weak tropical wave, associated with scattered convection, which formed off the coast of Africa on June 23. The wave was moving towards the west at the rate of 23 mph (37 km/h), due to an area of high pressure located over the north-central Atlantic Ocean leading to a prevailing easterly flow. Some cyclonic turning was noted and convection was on either side of the axis— the center of the storm—but was mainly in association with the Intertropical Convergence Zone (ITCZ). The wave remained very close to the intertropical convergence zone for the next several days without any further development.〔 On June 26, a small burst of moisture in the system was noted in the area of the wave, but no other notable development occurred. On July 2, the wave moved over Central America and produced scattered areas of strong convection off the coast of Honduras.〔 Later in the day, the center of the wave became elongated as determined by a QuikSCAT satellite pass. By the afternoon, the wave developed into an area of low pressure and a tropical cyclone formation alert was issued as the possibility of a tropical cyclone developing within 48 hours was present. Not long after the alert was issued, deep convection disappeared from the low while located 400 mi (645 km). Convection was anticipated to redeveloped later that night or early the next morning. The low was moving slowly towards the northwest due to a deep trough located over the Gulf of Mexico and a ridge of high pressure located over western Mexico. By the morning of July 3, convection had redeveloped near the low and its forward motion quickly increased to 11 mph (18 km/h). The low remained disorganized for the next two days as it steadily moved towards the northwest. During the morning of July 5, deep convection rapidly increased and banding features formed despite strong easterly wind shear. The convection persisted into the afternoon and the low was upgraded to Tropical Depression Five-E accordingly. Weak steering currents persisted as the depression moved towards the northwest at 4 mph (6 km/h) to 5 mph (8 km/h). Following the storm's upgrade, further development did not occur as the system tracked steadily towards the north-northwest. Early on July 7, the depression made landfall near Lazaro Cardenas with winds of 35 mph (55 km/h). Rapid weakening followed shortly after landfall and the storm dissipated several hours later over the mountains of Mexico.〔 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「Tropical Depression Five-E (2008)」の詳細全文を読む スポンサード リンク
|