I was going to ask that.

The 2021 heatwave was caused by a trapped wavenumber 8 pattern under a broad z-cell mean state augmented subseasonally. I doubt it had much to do with latent heat release or atmospheric rivers. Not really a clear mechanism there outside theories simulated in tuned climate models.

And you didn't even mention city vs rural UHI impacts. The warming is clear and obvious, but the "subtleties" as you say also make it complicated.

I think the PNW will be wet but I think Seattle may be spared from most of the rain due to shadowing

Again..context. The discussion has been about comparisons to 2015 with Shawnigan. And do you think Nanaimo is more relevant to most folks here than SEA? Also - why is Shawnigan choosing to post Nainamo stats rather than Shawnigan Lake stats?