I stumbled upon this photo while searching for a Seattle Storm (as in the basketball team) image.
The photo was taken in Kansas City, Missouri on Friday at the Royals' Kauffman Stadium just before their game began against the Chicago White Sox..
I'd say in looking at the sky, I'd agree it's time to get the tarp out, pronto!
(AP Photo/Ed Zurga)
And here is what it looked like a few moments later: