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Hurricane Naomi (1968)
Hurricane Naomi was a short-lived Category 1 hurricane that made landfall in Mexico's Pacific coast during the 1968 Pacific hurricane season. After rapidly intensifying before its landfall in Sinaloa, Naomi caused rainfall throughout northern Mexico and the U.S. state of Texas in association with a frontal system, with the highest measurement occurring in Corpus Christi. Four people perished in Mexico due to Naomi's effects with ten more missing, all in Sinaloa. The only reported injury in Texas due to the remnants was a factory worker who was injured when the roof of the plant they were working in collapsed due to rainfall.
Naomi was the seventeenth tropical depression, fourteenth tropical storm and the fourth hurricane of the 1968 Pacific hurricane season. Its precipitation on the Mexican Altiplano briefly threatened the unfinished Lázaro Cárdenas dam on the Nazas River. If the dam failed, the twin cities of Gómez Palacio, Durango, and Torreón, Coahuila, would have been inundated. On the other hand, releasing water from the dam would have saved Torreón by submerging Gómez Palacio with the dam's runoff. From help with satellite imagery, the authorities decided to keep the dam closed—risking its possible failure—saving both towns.
==Meteorological history==
The disturbance that developed into Hurricane Naomi was reported in the Intertropical Convergence Zone on September 8 at 12 °N, 98 °W. At that time, a ship called the ''Avisfaith'' reported winds to the south-southwest of force 7 on the Beaufort Scale south of this position, the equivalent of a strong tropical depression on the Saffir-Simpson Hurricane Scale. On September 9, six more ships reported winds of from the system, which was at 13°N, 101°W at the time, and the system was given depression status on the same day. Later that day, satellite pictures clearly showed the vortex and center of the developing cyclone, and on September 10, the first report of tropical storm force winds were reported south of the low by the ship ''Builder'', which showed winds of . The depression continued to develop at a rapid pace, with large feeder bands which helped to absorb moisture to strengthen the cyclone extending from the center, which was becoming better defined. One of the feeder bands developed near Manzanillo, Colima, which reported winds of from the band prior to daybreak. Towards the end of the day, the ''Allison Lykes'' reported winds from the cyclone and, early on September 11, sufficient evidence that the depression had reached tropical storm status resulted in the cyclone being upgraded and named "Naomi".〔
For the next twelve hours, Naomi continued to rapidly intensify, with feeder bands flowing into a tightening spiral structure in the center of the storm. Ship reports around this time showed winds of to . Towards midnight, a computerized mosaic showed a clear eye and Naomi was upgraded to hurricane strength early on September 12 while at 19.8°N, 106.8°W based on the mosaic, an intensity that was verified by the ''Meisei Maru'', which reported winds of at 6:00 Greenwich Mean Time (GMT). After being upgraded, the hurricane moved to the north at a pace of before making a slow northeastward turn. The turn had the hurricane passing – west of Mazatlán, Sinaloa. The hurricane then began to accelerate, landfalling on Sinaloa near Punta Piaxtla at 3:00 GMT on September 13.〔 Shortly after landfall, the Sierra Madre Occidental took a toll on the hurricane, causing it to dissipate later that day〔 while midway between Chihuahua, Chih., and Piedras Negras, Coah., with the remnants moving over Texas.〔 〕 In total, the hurricane travelled while active.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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