Looking at patterns 2 weeks out on ensembles helps to give us an idea of where we are possibly heading in terms of potential sensible weather. When the various ensembles agree and they don’t get pushed back in time, then we can reasonably expect that the advertised pattern is likely correct.
The teleconnections that some of us post help to indicate where the pattern is potentially heading. They help to forecast where the ridges, troughs, etc. should be located that then will impact our storm tracks & air mass type.
We all have varying levels of understanding these concepts. I have learned a ton from some good posters in here and the other regional forums.
Discussion on the pattern & looking at the range of possibilities is what most weather boards are built upon.
Sometimes advertised patterns come to fruition and other times they they never materialize, but it should always be ok to discuss and share our thoughts & analysis.
The thrill of the chase, especially in the Winter, is what keeps me coming back here every day!