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The descriptor extratropical signifies that this type of cyclone generally occurs outside the tropics and in the middle latitudes of Earth between 30° and 60° latitude. They are termed mid-latitude cyclones if they form within those latitudes, or post-tropical cyclones if a tropical cyclone has intruded into the mid latitudes.
World map with the middle latitudes highlighted in red Extratropical cyclone formation areas. The middle latitudes, also called the mid-latitudes (sometimes spelled midlatitudes) or moderate latitudes, are spatial regions on either hemisphere of Earth, located between the Tropic of Cancer (latitude 23°26′09.7″) and the Arctic Circle (66°33′50.3″) in the northern hemisphere and ...
A bomb cyclone, also referred to as explosive cyclogenesis or bombogenesis, is a mid-latitude cyclone that has rapidly intensified. A cyclone is a low-pressure weather system - one where the ...
The now mid-latitude cyclone then moved eastwards, bringing blizzard conditions to the Rocky Mountains and Great Plains on January 7. Six states recorded whiteout conditions during this time. Six states recorded whiteout conditions during this time.
NOAA's GOES West satellite captured enhanced color imagery of a powerful mid-latitude cyclone and atmospheric river impacting Northern California, the Pacific Northwest and British Columbia this week.
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, [16] [17] and are often described as "depressions" or "lows" by weather forecasters and the general public.
“The revolving door of mid-latitude cyclones propagating through the Pacific Northwest is likely to continue through the rest of the weekend,” the National Weather Service said.
Cyclones have also been seen on extraterrestrial planets, such as Mars, Jupiter, and Neptune. [7] [8] Cyclogenesis is the process of cyclone formation and intensification. [9] Extratropical cyclones begin as waves in large regions of enhanced mid-latitude temperature contrasts called baroclinic zones.