Weather Report for February 9, 2013

A winter storm hit Kitt Peak tonight with dramatically lower temperatures, high winds, high humidity, and some precipitation, but not before about a half dozen blazars could be observed at the beginning of the night. The observations were made in generally clear skies and poor seeing (2-3 arcsec). At about 2200 local time, wind gusts of around 50 mph shook the building and the dome was closed for the night. By the time the wind diminished to below the safe limit, the humidity had risen past 90%. The mountaintop was in a cloud cap by about 0100 local time.