There are also some figures here showing a slowing trend in jetstream speeds:
https://www.meteoblue.com/en/weather...tralia_2158177
It's interesting to see these sites, as I'm trying to work out how much use they are. According to Meteoblue Sunday night looks promising, have to wait and see...
There's a cold front hitting Melbourne this weekend so maybe (fingers crossed) Sunday night will be cold and clear...