So some questions. come to mind.
When was the last SH polar vortex split?
What variables should we watch as this event unfolds. ie 500hpa geopotential height.
I have tweeted michael Ventice and asked him to do a blurb on the event, so hope he does
Any other sites likely to cover this event?
We must keep in mind that is a GPS forecast for 4days time..10th July 2019 .Has the split already started morphing.
Would be happy if people could provide links to their sources.
Here is the SH snapped by 'pow' in ski forum of the SH synoptic before the polar vortex split. Notice the 2very deep high pressure cells with close to record high mslp. I believe high pressure anomalies are often a protagonist in initializing these events. I read that in a research journal last week