I have tried to clean this post up so it makes a bit more sense. These are my Obbs as at the 18th May that will help to develop a strong snow system over the Aust Alps from around the 2nd of June to 6th June. These days may be pushed back slightly. As at the 18th May, There is a large strong high sitting east of S/America. There is a low sitting in front (east) of this high which is threatening to move south in front of the high. SW of Africa, we have a weak high. Below this high we have a triple low system which should combine in the next few days. SE of Africa we have a developing low which should track south to meet with the triple lows. Between S/America and Africa is very unstable air which will help the S/American high to move east and establish itself. But with all this instability, we will get strong lows and fronts that will develop below this trailing high. This high will then elongate in a SW to NE direction over SW Australia as per the last 2 passing high. This will drive a strong 3 day system over the ALPS and dump around 50cm over the prediction period IMO. All can be seen at the following: http://www.bom.gov.au/australia/charts/pacific_ocean.shtml S/America http://www.bom.gov.au/australia/charts/indian_ocean.shtml Africa.