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WeatherTalk: This is cold core funnel country

Our region has more cold core funnel clouds than anywhere else in the United States.

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FARGO — The region of the United States from North Dakota eastward across Minnesota and Wisconsin to Michigan has more incidences of cold core funnel clouds than anywhere else in the United States. Cold core funnels, commonly called "cold air funnels," are condensation funnels that form in and around weak convective showers. Because the updrafts within these showers are not nearly an intense as those found in supercell thunderstorms, there is less energy available for rotation.

Cold core funnels usually do not reach the ground and if they do, they usually do not do much damage. Most of the time, these weak rotations produce wind speeds like those in a dust devil rather than a tornado. However, there can be hybrid situations in which a cold core funnel does become strong when its parent shower grows stronger. Cold core funnels are usually small and not too scary-looking but should always be reported to weather media, law enforcement or the National Weather Service.

Related Topics: WEATHER
John Wheeler is Chief Meteorologist for WDAY, a position he has had since May of 1985. Wheeler grew up in the South, in Louisiana and Alabama, and cites his family's move to the Midwest as important to developing his fascination with weather and climate. Wheeler lived in Wisconsin and Iowa as a teenager. He attended Iowa State University and achieved a B.S. degree in Meteorology in 1984. Wheeler worked about a year at WOI-TV in central Iowa before moving to Fargo and WDAY..
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