The basic theory about Colorado's volatile climate: If you don't like the weather now, wait a minute. But when it comes to weather forecasts, TV viewers have always had to wait more than a few minutes, since local news broadcasts traditionally like to put weather news at the end of the show, compelling viewers to stay tuned through everything else. But finally this year, Channel 4 decided to experiment with presenting the entire forecast early in its evening broadcast — at the behest of KCNC's chief meteorologist, Ed Greene. Combined with the always dependable Jim Benemann, along with solid performances by new co-anchor Karen Leigh and sports lead Vic Lombardi, Channel 4's new format makes the forecast look bright for this nightly news show.