No observations on this night. Overcast all night with rain falling in scattered patches throughout the area during the entire night. Steady light rain after 01:30 at the observatory. The monsoon is only moderately active in southern Arizona, but even so, there were two separate thunderstorms over Mt. Bigelow during the afternoon. The big stuff is still in extreme northern Mexico, but is generally moving toward Arizona. It should be another active storm day tomorrow.