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Sigma KEE - TropicalDepression

热带低气压

热带低气压(TropicalDepression) 是等级形态最弱的热带氣旋系统(TropicalCyclonicSystem), 根据美國的國家颶風中心(NHC)、夏威夷州的中太平洋颶風中心(CPHC)和聯合颱風警報中心的标准，它的一分钟平均风速可达每小时38英里（MilesPerHour ）。

Relationships
Parents	热带氣旋系统	TropicalCyclonicSystem is the class of CyclonicStorms that originates in the Tropics and typically have rotational winds of strong force (> 25 mph) or higher.The whole system typically moving forward at 10-15 mph, but it can also stay quasistationary, or travel as fast as 40 mph. https://www.metoffice.gov.uk/research/weather/tropical-cyclones/facts