The 12z GFS today serves up a classic west-based NAO, the sort of thing that brings very unsettled weather for us, mild wet and windy.
This is, of course, a very familiar pattern in recent years. We see what looks like a northerly plunge, and one of two things happens - either the plunge passes to the east, clipping Scotland, or the plunge spins up a low to the west and bam, west-based NAO.
At least we're not in the heart of winter, so it's all academic at this time of year...
Originally Posted by: Retron