This is a post from Ian Ferguson on the model thread, make what you want of it: Yes, that reflects the current UKMO view and even those counties just north of the M4 (e.g., Glos, Oxon, parts of Berks, Bucks etc.) will probably be very marginal.... that's IF the current evolution proves trustworthy. Latest modified NAE output for Monday carries a rain signal across all of southern England but with the change to wintry PPN starting by ca. 06z in a line essentially from East Wales / Hereford across to Lincs and the Wash. The real midweek snow threat based on UKMO GM (and accepting - as the MO Ops Centre does - a continuing degree of disparity between models for the Wednesday event, albeit UKMO-GM and GFS are largely similar) manifests itself central Midlands northwards; e.g., GM suggestive of up to 25-29cm snowfall (!) into northern districts / northern Ireland whilst in southern England (SW quadrant especially) it's the hefty rainfall totals, plus some quite tight gradients, that catch the eye. So, lively weather for sure, even sans snow (and indeed many might say: have we not seen enough already!?). The UKMO 6-15d briefings now consistently offer the prospect of milder conditions developing across the south and the SIG snow risk being progressively excluded up into northern Scotland by the end of the period. I just photographed the first butterfly I've seen in 2010..... a biomarker of seasonal change afoot? We shall see.