Weather Report for April 27, 2012

The low pressure system that brought all of the clouds during the previous night ejected out of Arizona as fast as any storm system that I've ever seen. This left very clear skies for observing, though the temperatures were at least 15 degrees colder than earlier in the campaign. However, the seeing was not as bad as expected after such a turbulent day, at 1.5-2.5 arcsec. A good, productive night.