
A heavy cover of cumulus clouds moves across the sky over Hoover Dam and reservoir on the first cool day after a lengthy period of high temperatures. (My Final Photo for June 15, 2026. Photo by Gary Gardiner)

A heavy cover of cumulus clouds moves across the sky over Hoover Dam and reservoir on the first cool day after a lengthy period of high temperatures. (My Final Photo for June 15, 2026. Photo by Gary Gardiner)