the live model of the extratropical cyclone as explained by the Bergen School of meteorology. The life cycle progresses from a young frontal wave on a stationary front, to a maturing cyclone with warm and cold fronts, to a weakening occluded cyclone, and finally to a dying cut-off cyclone
an early stage of the life cycle of an extratropical cyclone that is characterized by an undulation along a previously stationary front, with a developing cold front on its backside and a warm front on its front side
the wave shaped region between cold and warm fronts during the early stages of an extra tropical cyclone's development
a young extratropical cyclone with strong warm and cold fronts but no occluded front
a mature extra tropical cyclone that exhibits an occluded front and usually begins to weaken---cyclones winds are strongest during this stage
the development of a cyclone. Surface temp gradients, jet streams and tall mountain ranges can lead to extra tropical cyclogenesis.
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