spinup
Weather Watcher
Reged: Sat
Posts: 25
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99L is currently being described by the in their Tropical Weather Discussion as being non-tropical at this time (4PM 9/5/07). It looks like a pretty good spinner to me.
The is also saying that a small increase in organization could result in the formation of a tropical or subtropical cyclone.
Hurricanes and tropical storms that move into the northern latitudes and are petering out are typically described as becoming .
Can someone please help me understand the difference between them all?
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Clark
Meteorologist
Reged: Wed
Posts: 1710
Loc:
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Tropical cyclones are warm-cored entities -- tropical storms, hurricanes, etc. Wind speeds are at a maximum close to the center.
Extratropical cyclones are most easily described as "things with fronts." Highly asymmetric, tilt to the west with increasing altitude, can be cold or warm-cored in nature. Wind speeds are at a maximum a fair distance away from the center.
Subtropical cyclones lie between the two. They are usually cyclones that have cut-off from the midlatitude flow and have hybrid characteristics -- a little bit of both types with most characteristics lying between the two extremes. Often warm-cored at the surface but cold-cored aloft.
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Current Tropical Model Output Plots
(or view them on the main page for any active Atlantic storms!)
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