continuing my check on GFS r/f totals different runs; 06z has 20/10mm
It has yet over the past 48-72 hours to come up with 2 runs, consecutive, with totals within 10mm of one another.
I am not having a go at the model, just hoping (!) that some who complain in winter at snow predictions being wrong can see it happens all the time. 500mb fairly easy relatively to get the pattern correct, the low 500mb, 18,000ft where most of the moisture is; incredibly difficult to get this correct even 24 hours out sometimes 12 hours.
please try and remember this come the winter.