wxman57 wrote:Windsurfer_NYC wrote:cycloneye wrote:If anyone wants to comment to NHC about this not being Dorian you can contact them.
http://www.nhc.noaa.gov/contact.shtml
Does NHC have their criteria posted anywhere for renaming/reusing regenerated storm names?
There must be some identifiable and trackable surface feature. They stretched that rule a bit when they renamed Ivan as Ivan once it emerged into the Atlantic. They said they could track part of the low-level vorticity. But I don't think even that is possible with Dorian.
From NHC facebook page they answered.
NOAA NWS National Hurricane Center The NWS Directive states that "Within a basin, if the remnant of a tropical cyclone redevelops into a tropical cyclone, it is assigned its original number or name." This language is a little ambiguous about what happens when there is more than one remnant (if, for example, a low-level remnant and a mid-level remnant separate). However, in such a case, we follow the primary remnant, which would almost always be considered the lower-level feature.
The reason that 2005's TD Twelve was not renamed TD Ten was because the primary remnant - the low-level circulation - of TD Ten had moved on and was not involved in the genesis of TD Twelve. In the case of Dorian, on the other hand, we're still dealing with the same low-level vorticity feature.
