On Thursday, 5 October 2017 12:21:56 UTC+1, Graham P Davis wrote:

Met Office computer forecast was also going for storms on the Sunday.
When someone asked me in the pub on Monday evening what the weather
would be like on on Friday at Wentworth - he was going to the golf
tournament - I warned him that there'd be storm force winds. In each
successive run of the computer forecast during the week, it looked as
though it was chickening out and if I'd seen the guy on Wednesday
evening, I'd've told him not to worry!

I think in Glenn Shutts' paper (think it might be an internal Met Office paper) on the storm about a "successful fine mesh forecast" (here fine mesh was 50km!) there was talk about a 5-day run being absolutely bang on - so this seems to tally with it !

Richard