On Tuesday, 9 September 2014 14:06:09 UTC+1, Weatherlawyer wrote:

This in keeping with the few severe events showing on BoM. The worst of it happening soon and then a massive influx from the South Pacific creating the largest system in Antarctica which should arrive by Friday at Antarctic's Watershed.

From then on it is tropical storms all the way. TBH I wouldn't be surprised to see Norbert and Fengshen rebuilding tonight. There is so much in the works I can't help thinking the MetO&CG is somewhat tardy.

I was somewhat taken aback by the Hawaii output and they way it portrayed Fengshen:
http://mkwc.ifa.hawaii.edu/models/mo...imtype=fl ash

Admittedly Fengshen wasn't a bruiser but in the days of sail it would have been a welcome asset to any ship's captain. I imagine the problem lies in the Aleutians and the way that storms behave in that neck of the woods.

The set up Fengshen was to join is a Low of some 1004 millibars and it is centred to the west of the ocean, near the Russian side of it. From the above link, it looks as though the storm passes to the south of it before rounding the core and joining from the north or NNW (a rotation commonly seen in the Southern Ocean when seismic disturbance is not on the cards.)

It appears that the gyroscopic action of cyclones in the North Pacific require a boost of a complete storm system before they are large enough to crawl ashore. The overall pressure at the centre does not vary very much from 992 millibars during the whole process but the size of the system has to increase to fill the complete void.

The obvious conclusion is that an harmonic has to be obtained in the manner of an aeolian harp. I wonder what tones are set.