On Sat, 22 Mar 2014 11:35:56 +0000
Freddie wrote:

it clearly retrogressed, pulling back SW, to =
the 16th.
Nope - that was a whole new high forming in the west atlantic and
trundling east.

Haven't looked at this set-up but that statement of yours describes how
highs often retrogress. The high itself does not move west but instead
gets eroded and replaced by one further west. That one progresses east,
though not as far as the previous one, and gets eroded in turn and
replaced by another still further to the west. Although the individual
highs all move eastwards, the average position of the main high
pressure area moves west.

--
Graham P Davis, Bracknell, Berks. Mail: 'newsman' not 'newsboy'.
"Welcome to the year of the whores. People around the globe celebrate."
- BBC News subtitle