On Wed, 04 Apr 2012 08:22:58 +0100
Yes, it's unusual but I've got the impression from the media that they
think it's unprecedented and one hint that it might be associated with
GW.
I don't know how unusual it is; I remember one incident in the 50s and
another in the 60s and none since - until now - but there could well be
others I've forgotten. Mind you, you could probably add another if
you allow the reverse effect when in June 1975 we went from snow to
heatwave in less than a week.
I suppose it's a side-effect of growing older. Everyone bangs on about
how unusual something is and I say, "nah, seen it before, move on, get
over it."