A heatwave is anything > 15 degrees over average high, which in June I’m assuming is low 70s. We will have at least 3 days hitting that criteria.

Most of the models show one or two low 90s in Puget sound. Long ways to go but that would be a pretty low end heatwave especially compared to some we’ve had in recent years IMO. To me a “heatwave” is atleast 3 days in the low 90s at the least. Maybe 2 days if you had 2 days of +95 or so with some upper 80s mixed in. For now this doesn’t look like anything too crazy.

If I lived there, there might be a single person sitting at one of those tables!

If the Euro AI is correct, won't be much of a heatwave at all, especially in your area. But then you have the CMC/GFS, which still show SEA getting into the low 90s for at least a day.

I don’t understand why those picnic tables are completely empty…Looks like a perfect morning for a lovely breakfast outside.