Digital-TC-Chaser wrote:RL3AO wrote:Digital-TC-Chaser wrote:Hammy may well have been correct with her early call on a subtropical storm.
It dont look like this storm has much wind speed around the centre. Atm it looks
all outta radius gales.
Recon and model analysis show basically zero temperature gradient across the system. It's lopsided but I don't see any reasons to justify calling it subtropical.
I have been looking at private marine ascat data, not noaa but usually quite accurate
all i was seeing is 10/15 kts within the elongated centre perimeter and 35kts well away
from centre. TBH RL3AO it looks a sheared mess on ir. likely a good thing really could
be a much worse scenario.
Yes, it is a sheared mess, but nothing else was really be expected from this. As to continue on the tropical vs subtropical thing. Here's the definition from the NHC.
"Subtropical Cyclone:
A non-frontal low-pressure system that has characteristics of both tropical and extratropical cyclones. Like tropical cyclones, they are non-frontal, synoptic-scale cyclones that originate over tropical or subtropical waters, and have a closed surface wind circulation about a well-defined center. In addition, they have organized moderate to deep convection, but lack a central dense overcast.
Unlike tropical cyclones, subtropical cyclones derive a significant proportion of their energy from baroclinic sources, and are generally cold-core in the upper troposphere, often being associated with an upper-level low or trough. In comparison to tropical cyclones, these systems generally have a radius of maximum winds occurring relatively far from the center (usually greater than 60 n mi), and generally have a less symmetric wind field and distribution of convection."
Is it sheared? Yes. Are the winds away from the center? Yes. Is there a temperature gradient (aka baroclinic sources)? Not even a hint of one. That makes it tropical.