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The descriptor "extratropical" refers to the fact that this type of cyclone generally occurs outside of the tropics, in the middle latitudes of the planet. These systems may also be described as "mid-latitude cyclones" due to their area of formation, or "post-tropical cyclones" where extratropical transition has occurred, [ 5 ] [ 6 ] but are ...
A tropical cyclone can become extratropical as it moves toward higher latitudes if its energy source changes from heat released by condensation to differences in temperature between air masses; [20] From an operational standpoint, a tropical cyclone is usually not considered to become a subtropical cyclone during its extratropical transition. [26]
As a note, tropical and subtropical cyclones are classified by National Hurricane Center as synoptic scale rather than mesoscale. [ 8 ] Features the size of an individual thunderstorm are also known somewhat informally as "storm-scale", typically meso-gamma but sometimes meso-beta [ 9 ] or microscale .
For people on the ground, there is little difference between a subtropical and tropical storm. Both bring high winds and potential flooding.
Hurricane Cristobal (2014) in the north Atlantic after completing its transition from a hurricane to an extratropical cyclone. Tropical cyclones often transform into extratropical cyclones at the end of their tropical existence, usually between 30° and 40° latitude, where there is sufficient forcing from upper-level troughs or shortwaves ...
Continued weakening is expected and Helene is forecast to become extratropical later Friday, the NHC said. Tropical-storm-force winds extended outward up to 345 miles east of the center of the ...
Also actiniform. Describing a collection of low-lying, radially structured clouds with distinct shapes (resembling leaves or wheels in satellite imagery), and typically organized in extensive mesoscale fields over marine environments. They are closely related to and sometimes considered a variant of stratocumulus clouds. actinometer A scientific instrument used to measure the heating power of ...
Will it turn into a tropical storm or tropical cyclone? A low pressure system is bringing rain and wind to the Myrtle Beach, SC area. Will it turn into a tropical storm or tropical cyclone?