Weather Report for October 17, 2017

The night was photometric until the final hour when high thin cirrus clouds moved in from the southwest. Otherwise, it was an ideal warm, calm night to do astronomy. The seeing was good at 1-1.5 arcsec.

The weather is expected to be more challenging over the next several nights as can be guessed by the satellite image. A cloudy mess is coming at Arizona from the Pacific Ocean.