Extensive high clouds covered a large fraction of the sky at the start of the night, but little time was lost as this quickly cleared. The sky was mostly clear except for occasional very thin, scattered cirrus clouds until around 0300 local time. After that, a thicker cirrus cloud deck slowed observations until dawn. The seeing was generally lousy; varying between 2-4 arcsec for most of the night.
A very early evening IR satellite image is displayed for tonight because later images were not forthcoming from the National Weather Service.