Crazy Cutoff Low

Darn it, the Queensland jinx is making next Wednesday's rain forecast deteriorate. On the other hand, this weekend's rain forecast is beginning to look better.

Much depends on the behavior of the cutoff low developing over southern Australia. Cutoff lows are notoriously hard to forecast, however, so nothing will be definitive until it happens. And why is the region of positive vorticity advection shown on the 500 mb chart so distant from the region of forecast rainfall on the surface chart? I keep thinking it's gotta rain more than the forecast is showing.

May the rain(s), wherever they are, be plentiful!