Weather Report for April 5, 2011

Except for some persistent jet contrails to the north early in the night, a clear night with better seeing (1.2-1.6 arcsec) than on the previous night. The weather forecast is pretty poor for the remainder of this campaign, with not one, but two storm systems passing through Arizona during the next 5 days. Snow is expected at the elevation of the observatory and above on the weekend! If the forecast holds, it will be especially fortuitous that three extra nights last week were exploited for blazar monitoring.