Weather Report for September 24, 2016

Although this was mostly a clear night, southern Arizona continues to have problems getting rid of the wet air mass that has been over the state all week long. A cold front came through in the afternoon and dropped some rain on Kitt Peak. By sunset, the sky was mostly clear and remained clear for the first half of the night. After midnight, fast-moving clouds formed and dissipated quickly over the mountain hindering several attempts at photometry. Twenty blazars were successfully observing for polarization and most will have flux information. The humidity was all over the place during the night, ranging from 37% to 80%. Likewise, the seeing varied between 1.3 and 3 arcsec.