Alistair. The wind did actually drop a couple of hours later, as predicted. The forecasts had been moving around over the preceding 24 hours. As you might know, I am a pilot and have flown all over Europe and the UK in light aircraft. In marginal weather, in order to avoid what is nicely known as Controlled Flight into Terrain, I always use the best met. information available. However , even then I can think of two incidences in the UK and France where the up to date aviation forecasts were 2 hours out for frontal movements , necessitating in-flight plan changes. Some Starcross YC examples as well .Rightly or wrongly , I feel the need to give around 24 hours notice of cancellation; thus my update flag of yesterday morning after extensive consultations with the OOD.
Robin