Meteorologist Spencer Christian will take you and five friends on a behind-the-scenes tour of the ABC7 studio on Front St in San Francisco.  You will get a special tour of the newsroom, and a close-up look at Spencer's Weather Center computers and equipment.  Learn about the ins and outs of daily weather prediction -- just how accurate is it?  Learn about climate change and what it means for the Bay Area.  And learn about how one gets into being a weatherperson, and more specifically, Spencer Christian's own fascinating journey.   Spencer is perhaps best known as the weather forecaster for Good Morning America for 13 years, starting in 1986.  He currently does the weather forecast every weekday at 4pm and 6pm on ABC7 News.