1920 Atlantic hurricane season (original) (raw)

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The 1920 Atlantic hurricane season featured tropical storms and hurricanes only in the month of September. Although no "hurricane season" was defined at the time, the present-day delineation of such is June 1 to November 30. The first system, a hurricane, developed on September 7 while the last, a tropical depression, transitioned into an extratropical cyclone on October 27. Of note, four of the six cyclones co-existed with another tropical cyclone during the season. Of the season's six tropical cyclones, five became tropical storms and four strengthened into hurricanes. Furthermore, none of these strengthened into a major hurricane—Category 3 or higher on the modern-day Saffir–Simpson hurricane wind scale—marking the seventh such occurrence since 1900. The strongest hurricane of the season peaked as only as a strong Category 2 with winds of 110 mph (175 km/h). The second hurricane caused one death and $1.45 million (1920 USD) in damage in Louisiana, the third left one fatality in North Carolina, and the fifth storm indirectly killed one person in Florida. The season's activity was reflected with an accumulated cyclone energy (ACE) rating of 30, below the 1911–1920 average of 58.7. ACE is, broadly speaking, a measure of the power of the hurricane multiplied by the length of time it existed, so storms that last a long time, as well as particularly strong hurricanes, have high ACEs. It is only calculated for full advisories on tropical systems at or exceeding 39 mph (63 km/h), which is the threshold for tropical storm status. (en)
1920年大西洋飓风季的所有热带风暴和飓风都集中在九月，其他月份虽然也有热带气旋形成，但都没有达到热带风暴标准。1920年时气象机构还没有正式规定“飓风季”的起止时间，现今则是以每年6月1日开始，同年11月30日结束。第一号飓风是本季首场风暴，于9月7日发展成型，最后一个气旋是热带低气压，于10月27日转变成温带气旋。全部六场风暴中有四场曾同其他气旋同时存在。全季六个热带气旋中有五个达到热带风暴强度，四个进一步强化成飓风，但都没有达到大型飓风标准，即都未达到现代萨菲尔-辛普森飓风等级下的三级飓风强度，是1900年后第七次出现这种情况。第二号飓风是本季破坏最严重的风暴，最高风速为每小时155公里，只达到二级飓风标准，在路易斯安那州夺走一条人命，并导致价值145万美元的破坏。第三号飓风在北卡罗莱纳州致使一人丧生，第五号飓风则在佛罗里达州间接引起一人遇难。这年飓风季的活跃程度还经累积气旋能量指数反映出来，数值为30。大致来说，气旋能量指数通过飓风强度和持续时间计算，强度越高、持续时间越长的风暴，其指数也相应越高。 (zh)

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Tworef|The "strength" of a tropical cyclone is measured by the minimum barometric pressure, not wind speed. Most meteorological organizations rate the intensity of a storm by this figure, so the lower the minimum pressure of the storm, the more intense or "stronger" it is considered to be. The strongest winds were actually from Hurricane One, at 110 mph (175 km/h).|group="nb" (en)

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1920年大西洋飓风季的所有热带风暴和飓风都集中在九月，其他月份虽然也有热带气旋形成，但都没有达到热带风暴标准。1920年时气象机构还没有正式规定“飓风季”的起止时间，现今则是以每年6月1日开始，同年11月30日结束。第一号飓风是本季首场风暴，于9月7日发展成型，最后一个气旋是热带低气压，于10月27日转变成温带气旋。全部六场风暴中有四场曾同其他气旋同时存在。全季六个热带气旋中有五个达到热带风暴强度，四个进一步强化成飓风，但都没有达到大型飓风标准，即都未达到现代萨菲尔-辛普森飓风等级下的三级飓风强度，是1900年后第七次出现这种情况。第二号飓风是本季破坏最严重的风暴，最高风速为每小时155公里，只达到二级飓风标准，在路易斯安那州夺走一条人命，并导致价值145万美元的破坏。第三号飓风在北卡罗莱纳州致使一人丧生，第五号飓风则在佛罗里达州间接引起一人遇难。这年飓风季的活跃程度还经累积气旋能量指数反映出来，数值为30。大致来说，气旋能量指数通过飓风强度和持续时间计算，强度越高、持续时间越长的风暴，其指数也相应越高。 (zh)
The 1920 Atlantic hurricane season featured tropical storms and hurricanes only in the month of September. Although no "hurricane season" was defined at the time, the present-day delineation of such is June 1 to November 30. The first system, a hurricane, developed on September 7 while the last, a tropical depression, transitioned into an extratropical cyclone on October 27. Of note, four of the six cyclones co-existed with another tropical cyclone during the season. (en)

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1920 Atlantic hurricane season (en)
1920年大西洋飓风季 (zh)

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