The Parrish Art Museum’s Midsummer Gala: In the Clouds could not have been more on theme. After a Saturday of dramatic thunderstorms and a flood watch, 700 guests—many in haute couture—arrived at the museum, and what could have been a washout was an absolute blowout. The gala raised more than $1.7 million in support of the museum’s exhibitions, education initiatives and inclusive programming; honorees included philanthropist Ellen Katz and artis…