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- The 2009 Atlantic hurricane season was an event in the annual tropical cyclone season in the north Atlantic Ocean. It was below-average Atlantic hurricane season with nine named storms, the fewest since the 1997 season. The season officially began on June 1, 2009, and ended on November 30, 2009, dates that conventionally delimit the period of each year when most tropical cyclones develop in the Atlantic basin. The first storm to form was Tropical Depression One on May 28, 2009 (one of three in 2009 that did not become a tropical storm), while the last storm, Hurricane Ida, dissipated on November 10. Of the year's nine named storms, three became hurricanes with two intensifying further into major hurricanes. The inactivity throughout the basin was linked to the formation of an El Niño, which increased wind shear. The two most significant storms of the season, in terms of loss of life and damage, were Hurricanes Bill and Ida. Hurricane Bill was an unusually large storm and was also the season's strongest, attaining winds of 135 mph (215 km/h). Tropical Storm Claudette was the only storm during 2009 to make landfall in the United States; Hurricane Ida became extratropical shortly before coming ashore in Alabama. This timeline includes information that was not operationally released, meaning that data from post-storm reviews by the National Hurricane Center, such as a storm that was not operationally warned upon, has been included. This timeline documents tropical cyclone formations, strengthening, weakening, landfalls, extratropical transitions, and dissipations during the season. By convention, meteorologists use one time zone when issuing forecasts and making observations: Coordinated Universal Time (UTC), and also use the 24-hour clock (where 00:00 = midnight UTC). The National Hurricane Center uses both UTC and the time zone where the center of the tropical cyclone is currently located. The time zones utilized (east to west) prior to 2020 were: Atlantic, Eastern, and Central. In this timeline, all information is listed by UTC first with the respective regional time included in parentheses. Additionally, figures for maximum sustained winds and position estimates are rounded to the nearest 5 units (knots, miles, or kilometers), following the convention used in the National Hurricane Center's products. Direct wind observations are rounded to the nearest whole number. Atmospheric pressures are listed to the nearest millibar and nearest hundredth of an inch of mercury. (en)
- Abaixo está a cronologia da temporada de furacões no Atlântico de 2009, documentando todas as formações de tempestade, incluindo as transformações (fortalecimento, enfraquecimento, dissipação, transição para extratropical). Também é documentado aqui o momento em que uma tempestade atinge terras emersas. A temporada de furacões no Atlântico de 2009 oficialmente começou em 1 de Junho de 2009 e terminará em 30 de Novembro, embora a depressão tropical Um tenha se formado ligeiramente antes do começo oficial da temporada, em 28 de maio. O gráfico abaixo indica de forma clara a intensidade e a duração de cada tempestade em relação à temporada. (pt)
- Dit artikel geeft een tijdsoverzicht van het Atlantisch orkaanseizoen van 2009 dat in dat jaar op de Atlantische Oceaan geweest is in en bij de Golf van Mexico. (nl)
- В статье приводится полная хронологическая последовательность сезона атлантических ураганов 2009 года с перечислением всех штормовых образований, динамики их усиления и ослабления, времени контакта стихий с сушей, переходы между уровнями интенсивности тропических циклонов а также время их рассеивания (диссипации). Сезон атлантических ураганов 2009 года официально начался 1 июня и продолжался до 30 ноября 2009 года. В статье также приведён краткий хронологический график движения атмосферных образований сезона 2009 года, на котором в качестве наглядности циклоны раскрашены в тот или иной цвет в соответствии с их распределением на шкале классификации ураганов Саффира — Симпсона. (ru)
- 2009年大西洋飓风季是一次活跃程度低于平均水平的大西洋飓风季，一共只形成9场热带风暴，是继1997年以来最少的一年。飓风季从2009年6月1日正式开始，同年11月30日结束，传统上这样的日期界定了一年中绝大多数热带气旋在大西洋盆地形成和发展的时间段，但第一号热带低气压早在5月28日就已形成。飓风艾达是全季最后一场风暴，于11月11日消散。 全季一共产生11个热带低气压，其中9个达到热带风暴强度，3场成为飓风，两场达到大型飓风标准。这种不活跃情况的出现主要是因为圣婴-南方振荡现象导致风切变增多。以造成人员伤亡和经济损失来看，本季最具影响的两场风暴分别是飓风比尔和飓风艾达。飓风比尔是全季最强风暴，持续风速一度高达每小时215公里，并且规模异常之大，飓风艾达在登陆阿拉巴马州前不久转变成温带气旋，热带风暴克劳德特则是本季唯一登陆美国的热带气旋。 这个时间轴中记录了全年大西洋所有热带或亚热带气旋形成、增强、减弱、登陆、转变成温带气旋以及消散的具体信息。还包括实际操作中没有发布的信息，如美国国家飓风中心在风暴过后进行的回顾。包括最大持续风速、位置、距离在内的所有数字都是经四舍五入换算成整数。 (zh)
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- Dit artikel geeft een tijdsoverzicht van het Atlantisch orkaanseizoen van 2009 dat in dat jaar op de Atlantische Oceaan geweest is in en bij de Golf van Mexico. (nl)
- 2009年大西洋飓风季是一次活跃程度低于平均水平的大西洋飓风季，一共只形成9场热带风暴，是继1997年以来最少的一年。飓风季从2009年6月1日正式开始，同年11月30日结束，传统上这样的日期界定了一年中绝大多数热带气旋在大西洋盆地形成和发展的时间段，但第一号热带低气压早在5月28日就已形成。飓风艾达是全季最后一场风暴，于11月11日消散。 全季一共产生11个热带低气压，其中9个达到热带风暴强度，3场成为飓风，两场达到大型飓风标准。这种不活跃情况的出现主要是因为圣婴-南方振荡现象导致风切变增多。以造成人员伤亡和经济损失来看，本季最具影响的两场风暴分别是飓风比尔和飓风艾达。飓风比尔是全季最强风暴，持续风速一度高达每小时215公里，并且规模异常之大，飓风艾达在登陆阿拉巴马州前不久转变成温带气旋，热带风暴克劳德特则是本季唯一登陆美国的热带气旋。 这个时间轴中记录了全年大西洋所有热带或亚热带气旋形成、增强、减弱、登陆、转变成温带气旋以及消散的具体信息。还包括实际操作中没有发布的信息，如美国国家飓风中心在风暴过后进行的回顾。包括最大持续风速、位置、距离在内的所有数字都是经四舍五入换算成整数。 (zh)
- The 2009 Atlantic hurricane season was an event in the annual tropical cyclone season in the north Atlantic Ocean. It was below-average Atlantic hurricane season with nine named storms, the fewest since the 1997 season. The season officially began on June 1, 2009, and ended on November 30, 2009, dates that conventionally delimit the period of each year when most tropical cyclones develop in the Atlantic basin. The first storm to form was Tropical Depression One on May 28, 2009 (one of three in 2009 that did not become a tropical storm), while the last storm, Hurricane Ida, dissipated on November 10. (en)
- В статье приводится полная хронологическая последовательность сезона атлантических ураганов 2009 года с перечислением всех штормовых образований, динамики их усиления и ослабления, времени контакта стихий с сушей, переходы между уровнями интенсивности тропических циклонов а также время их рассеивания (диссипации). (ru)
- Abaixo está a cronologia da temporada de furacões no Atlântico de 2009, documentando todas as formações de tempestade, incluindo as transformações (fortalecimento, enfraquecimento, dissipação, transição para extratropical). Também é documentado aqui o momento em que uma tempestade atinge terras emersas. A temporada de furacões no Atlântico de 2009 oficialmente começou em 1 de Junho de 2009 e terminará em 30 de Novembro, embora a depressão tropical Um tenha se formado ligeiramente antes do começo oficial da temporada, em 28 de maio. (pt)
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