Subtropical storm NW of New Zealand

[P.K.]

GALE WARNING 162
This affects ocean area: SUBTROPIC
AT 071800UTC

Over waters east of 160E and south of 25S.
In a belt 240 miles wide centred on a line 35S 167E 32S 164E 27S
162E: Southeast 35kt.
Gale area moving northnortheast 10kt.
This warning cancels and replaces warning 158.

Issued at 19:37:41Z on 07-Jun-2008

[HURAKAN]

07/2030 UTC 28.1S 165.4E ST2.5/2.5 98P -- South Pacific Ocean

Losing intensity.

[HURAKAN]

First Visible image.

[HURAKAN]

Moving north now.

[Chacor]

Now short of convection to its NW.



Already up to 27S.

[Chacor]

GALE WARNING 170
This affects ocean area: SUBTROPIC
AT 080000UTC

Over waters east of 160E and south of 25S.
In a belt 240 miles wide centred on a line 34S 167E 31S 164E 26S
162E: Southeast 35kt easing next 6-12 hours.
Gale area moving northnortheast 10kt.
This warning cancels and replaces warning 162.

Issued at 01:40:48Z on 08-Jun-2008

[Janie2006]

Vince, this storm and the Mediterranean cyclones or hurricanes are very similar.

It seems to me that these four also share some commonalities with strong Arctic storms as well.

[KWT]

Its really complicated to know what they are actually are. What is interesting is that they all seemed to form within a strong pool of colder upper air and yet appear to have a warm core so its an interesting mix, I suppose most of the examples would be hybrid systems, esp the Med system as it formed in Jan...SST's would be too low BUT with a strong cold pool probably alofdt that may well have helped to reduce the sea temps needed to kick off convective instablity, we saw the same thing with Epsilon and probably with Vince as well.

[Derek Ortt]

Some need to stop living strictly by the 26C rule, especially outside of the tropics (I was told this at a seminar in late 2005). It seems that many agencies around the world also seem to follow that rule to closely. The proper rule is the difference between SST and tropopause

[HURAKAN]

Now just a low without convection turning NW.

[KWT]

Yeah now it just looks like a left-over low to be honest but I think this was a tropical system at its peak, I'd say quite a strong strength maybe 50-60kts.

[StormspinnerD2]

It might well have been tropical. It depends on what the upper-air environment was like when it formed. I do know that it developed sometime between 00Z and 03Z yesterday.

EDIT: Never mind, this is from 09Z on Friday:

[HURAKAN]

Loop of the storm's origens, life, and end. Always keep an eye on bottom part of the loop.

[Category 5]

Dumb question, how uncommon is it to have a storm in this area? I'm sure it's uncommon at this time of year at the least.

[StormspinnerD2]

http://australiasevereweather.com/storm ... 080603.htm

Here is another animated loop that focuses more on the storm itself.

As for their rarity, that I am not sure of; someone more in touch with tropical climatology in this area might know.