Weather Report for July 29, 2016

After last night's impressive fireworks displays, tonight was a good night for astronomy. Thunderstorms developed just south of the US-Mexican boarder, but there seemed to be an invisible wall between Kitt Peak and these impressive storms. They never crossed the border and, in fact, generally propagated further south. Portions of the night were not strictly photometric, but often is was quite clear. About 20 blazars were observed in seeing that varied between 1.5 and 3 arcsec.