My take on that, is eventually we will see a heat wave similar to theirs. It may be a while, but the fact that they will break all time records by that much is insane to even think. I believe they are in a pretty decent drought, which helps fuel the heat, but I'd say we aren't immune to something similar at some point (may be many years). I'd say them shooting to 115 would be like us jumping to 106 or 107.
The crazy thing is Portland and the NW may not see anything this extreme for decades and decades again.
Just to be clear. I like heat, and do want to see us hit 100 soon, to break the drought there, but spiking that far above 100 would be too extreme.