|
Hurricane Norman was the most recent tropical system to make landfall in California. The 14th named storm, 11th hurricane and 6th major hurricane of the 1978 Pacific hurricane season, Norman evolved from a tropical disturbance noted southeast of Acapulco on the afternoon of August 29. The system moved westward and developed into a tropical depression on August 30. Modest strengthening ensued, and the cyclone became a tropical storm that evening and a hurricane on the evening of August 31 as it turned to the west-northwest. Late on the night of September 1, Norman became a major hurricane with a 40-mile-wide eye, and a nearby ship reported seas of . The center grazed the northeast side of Socorro Island on the afternoon of September 2. Moving over cooler waters west of Baja California, the cyclone slowly weakened. By early on September 4, moisture from the hurricane spread north into California initiating rains in the Golden State. A developing trough to its west caused the initial influx of moisture and Norman's turn to the north as a weakening tropical storm. Eventually turning north-northeast towards southern California, the cyclone did eventually turn north-northeast towards southern California, and the cyclone weakened to a tropical depression as it passed the 30th parallel. Hurricane Norman made landfall in California on September 5, as a minimal tropical depression. The tropical cyclone became a remnant low shortly after California landfall, and the final advisory was issued at 00:00 GMT, on September 6. Over of rain occurred in the Sierra Nevada range.〔(【引用サイトリンク】url=http://www.wpc.ncep.noaa.gov/tropical/rain/norman1978.html )〕 Rare snowfall was also reported. == Meteorological history == This system evolved from a tropical disturbance noted 400 miles southeast of Acapulco on the afternoon of August 29th. The system moved westward and developed into a tropical depression on the 30th. Modest strengthening ensued, and the cyclone became a tropical storm that evening and a hurricane on the evening of the 31st as it turned to the west-northwest. Late on the night of the 1st Norman became a major hurricane with a 40-mile-wide eye, and a nearby ship reported seas of 41 feet. The center grazed the northeast side of Socorro Island on the afternoon of the 2nd. Moving over cooler waters west of Baja California, the cyclone slowly weakened. By early on September 4 moisture from the hurricane spread north into California initiating rains in the Golden State. A developing trough to its west caused the initial influx of moisture and Norman's turn to the north as a weakening tropical storm. Eventually turning north-northeast towards southern California, the cyclone did eventually turn north-northeast towards southern California, and the cyclone weakened to a tropical depression as it passed the 30th parallel.〔(【引用サイトリンク】url=http://www.wpc.ncep.noaa.gov/tropical/rain/norman1978.html )〕 Hurricane Norman made landfall in California on September 5, as a minimal tropical depression. The tropical cyclone became a remnant low shortly after California landfall, and the final advisory was issued at 00:00 GMT, on September 6.〔(【引用サイトリンク】url=http://journals.ametsoc.org/doi/pdf/10.1175/1520-0493%281979%29107%3C0911%3AENPTCO%3E2.0.CO%3B2 )〕 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 Norman (1978)」の詳細全文を読む スポンサード リンク
|