On May 10, 8:56 am, Weatherlawyer wrote:

Therefore a change in the spell from the predictable to the actual of
5 hours is the equivalent of 5 billion tons of TNT per region
affected.

http://www.seismo.unr.edu/ftp/pub/lo...magnitude.html

Hence the need to specify harmonics as per the question that started
this whole fracas off in the first place:

http://groups.google.com/group/uk.sc...m/thread/e447e...

Which Low, as it happens, is still pending at 60 N 30 W:

http://www.wetterzentrale.de/pics/bracka.html

Furthermore the two North Atlantic cells are of the same order of
magnitude. The High focussed at Oslo/Gothenburg and the Low at 55 N 35
W are both about 1 hour wide.

OK, they cover some 20 or 40 degrees but the actual diameter is
Gothenburg to Edinburgh, isn't that far off 15 degrees on a great
circle.

I like that coincidence. 15 degrees suits me.