Major Weather Change Ahead, And Why Do Low Temperatures Vary So Much on Cold, Clear Nights?

During the past weeks, the Northwest has been locked in a cold, dry pattern--that will change on Saturday as warm/wet weather returns.  I will describe this change in the podcast and will discuss an interesting subtlety of our cold weather:  the often large air temperatures variations throughout the Puget Sound region.  Why do they occur?  You find out in this podcast.