Clear skies were encountered until about the start of morning twilight. That is when the vanguard of the huge cloud shield spawned by hurricane Newton reached Mt. Bigelow. The thin cirrus only affected observations of the final two objects of the night. Seeing was 1.2-1.7 throughout the night.
The northward progress of hurricane Newton
during the night has been impressive. In the satellite image, the
eye of the hurricane is at about the tip of the Baja peninsula (off of
the image), yet clouds are already encroaching on Arizona.
Based on the weather forecast and the immensity of Newton, this may be the
effective end to Campaign 86.