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Sigma KEE - Storm

风暴

Storm 发生于由 LowPressureWeatherSystem 的 Atmosphere 占领的地区，里面的 Air 的流动方向是 MotionUpward。地面 Wind 速 Likely 高于30 KnotUnitOfSpeed 并或伴有 Precipitation。

Relationships
Parents	天气过程	WeatherProcess is the broadest class of processes that involve weather, including weather seasons (not to be confused with instances of SeasonOfYear), weather systems, and short-term weather events.
Children	暴风雪	A Blizzard is a Snowing with surfaceWindSpeed of over 35 KnotUnitOfSpeed for a sustained duration of at least 3 HourDuration. The strong Wind results in blowing Snow causing the %Region affected to have visibilityInMeteorology reduced to less than 400 Meter.
	气旋风暴	CyclonicStorm is the class of LowPressureWeatherSystems that involve a low pressure area surrounded by winds rotating rapidly inwards.
	尘暴	DustStorms happen in AridClimateZones or SemiaridClimateZones. They occur when a strong Wind carries ParticulateMatter or Sand from its underlying Dry surface and deposit it to another Region.
	雪暴	A Snowstorm is Snowing at the snowfallIntensity of more than 5 Centimeter per HourDuration.
	飑
	雷雨
	龙卷风	A Tornado is a rapidly rotating column of Air which extends from the Cloud base of a cumulonimbus to the ground.
	风暴