We use the "shepher's" version here too, but did not want to say earlier to minimise ribaldry. As to the direction of weather, most of ours, where I live seems to move from west to east. Most weather systems affecting uys are spawned either in Australia or in the Tasman Sea, and moved westward toward Zild. That's why the East Coast (of both islands) is largely sheltered from much of the dynamic weather patterns. Here in Hawke's Bay, weather from the east (the Pacific, which we are having right now, means grey and/or wet weather for around 3 days.

The other major direction in which weather moves here is south-north. Many of our fronts are generated around Antarctica and work their way down here.