A colder/wetter spring stretch can definitely be beneficial. The problem is that in our current climate capacity, a truly cold + wet stretch is like winning the lottery twice. In our colder past, months like May 1977 likely made a big difference in lessening the blow that summer in terms of water shortages following a historic winter that was the driest on record by a significant margin.

Biggest key to avoid smoke is pretty clearly avoiding 2+ month stretches of very little rainfall. If the PNW can manage 1-2 soaking rains/month from June-September, shouldn't be a major issue.

Adding an extra 20 inches of snow won’t do anything long term for our summer outlook. Unless it’s some super snow

That was a second year Nino, though. Those have a warmer signal for the PNW over the historical record than first year Ninos. Especially if we're talking a very strong Nino.

18z GRAF. That's a thunderstorm for PDX.