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ESS124
Prof.
Jin-Yi Yu
The Dissipating Cyclone
•Dissipation of the cyclone can take
several days to over a week depending on the maximum intensity of the storm.
•During this time, active weather still
occurs along the frontal boundary.
•As cold air continues to move
southeastward, the upper-level trough will continue to deepen and will eventually cut off from
the main flow.
•This “cutoff low” aloft has cold air in
the center.
•The low at the surface is directly
underneath the cutoff low aloft, and the whole system slowly spin down as frictional
convergence raises the pressure of the surface low.
