Weather Report for November 11, 2012

Almost an inch of light snow fell between sunset and midnight. The sky cleared and the humidity fell after 0100 local time. The temperature fell to -6 C. The problem during the last half of the night was the risk of having snow sitting on the top of the dome fall on the telescope and primary mirror if the dome slit was opened. Because of the powdery nature of the snow and the cold temperatures, any wind at all would bring snow into the dome. It was thought best not to risk the telescope optics and no observations were made. Abundant sunshine expected during the day should eliminate the snow risk for tomorrow night.