"John Hall" wrote in message
...
In article ,
Scott W writes:
excuse the non scientific explanation but this sort of makes it look
like somebody has jabbed a pin against the tropopause, bursting it

http://i50.tinypic.com/1zwgkmd.gif

It's fascination how the first warming seems to have occurred somewhere
in the region of the Red Sea (hardly where one would have guessed),
before moving NE and rapidly spreading.

I wonder if the wave that is breaking is in the Subtropical Jet Stream
rather than the Polar Night Jet?

Cheers, Alastair.