In 2000, the channel's Weather Star XL systems introduced an audio function, Vocal Local, which assembles narration tracks heard during local forecast segments to introduce forecast products, and read descriptive forecasts and primary weather observations; while most cable operators added the Vocal Local feature, some did not employ it on their Weather Star XL units. The cycling of music playlist changes was increased from a quarterly to a monthly basis; as such, 2000 is considered to be the year the split between the "classic" TWC and "modern" TWC occurred by several websites. On August 23 of that year, the channel debuted "Atmospheres", a weekly newsmagazine-style program hosted by Jim Cantore and Mishelle "Mish" Michaels. It aired Wednesdays at 8pm, Saturdays at 5pm, and Sundays at 8pm and 11pm. Encore editions were aired on Saturday and Sunday at reverse time.