Despite yesterday looking like there was a trend being established,
changes in the ECM 12z stopped the possible agreement and consistency
that appeared to be emerging yesterday and we are back with model
difference this morning. The gfs shows a northerly, then an Atlantic
breakthrough, but it is short-lived and there are hints of high
pressure building at 10 days (and after). The ECM shows something very
similar, but develops the high pressure over the UK by T+240.

Yesterday, it really would have been very easy to have forecast an
Atlantic regime at 10 days, as the high sinks SE (which is likely). It
looked like it might be the case for much of the day. What price an
Atlantic regime at 10 days this morning?