benny wrote:Noles2006 wrote:Why couldn't they just call it Tropical Depression Ernesto and just say that during the day it acquired TS status, but has since weakened.... is it possible for the NHC to do that?
That would be new to me!
It would be fairest (assuming it's no longer a TS by the next update). Remember, they called it a TD - when it couldn't possibly be one - because they weren't 100% sure it was a TS. IMO the strictness of the definitions is causing problems - you can have a TC without a strictly closed surface circ - and this morning TD5 was unquestionably Ernesto even if the circ was technically open a la Quickscat.
At present, though, there's no question that it's a TS. 48kts flight = 40 surface - that's not marginal - plus the Quickscat, large windfield, and closed circ. Doesn't matter if people don't want to work over the weekend and doesn't matter if it's likely to be downgraded in the near future (hasn't anybody yet noticed unlikely things happen in the tropics all the time?
The dissection, incidentally, is being driven by mid-level NW shear, not W upper shear. Not so clear that the TUTT is death since it won't necessarily intensify mid shear. Most globals relax the mid shear rapidly.