Things were already getting pretty brown here in Mays 2015, 2016, 2018, and 2021. Which is just what happens when 80+ temps start becoming the norm and the rains shut off.
It's the official opening day of boating season. Huge event with hundreds of boats all tied to a big log boom they put out in Lake Washington for it. Crew and sailboat races and a big boat parade. They do the same thing for Seafair.
https://visitseattle.org/events/opening-day-of-boating-season/#:~:text=5%2F4%2F2024 | Seattle Yacht Club&text=Opening Day%2C the official opening,Day Boat Parade on Saturday.