PM Edition and sister program Afternoon Outlook were launched in fall 2003 and helped finish the compartmentalization of the TWC programming day, which transformed the network from just Weather Center to a myriad of different shows with set hosts and tone. The original pair of meteorologists for the program was Carl Parker and Kristina Abernathy. The program, originally two hours in length airing from 6pm to 8pm Eastern Time was expanded to three hours, airing from 4pm to 7pm eastern on September 25, 2006 as a result of the cancellation of Afternoon Outlook and the debut of Abrams And Bettes: Beyond The Forecast. In September 2007, the program once again returned to two hours in length airing from 5pm to 7pm eastern. In March 2009, the show returned to three hours in length replacing the afternoon hour of Weather Center, which was revamped as a primetime program. The format of the program was slightly different on the weekends as the program aired late at night during the weekends, which from 11pm to 2am eastern. The weekend format primarily focuses on the day's significant weather events similar to Evening Edition and the weeknight version of Weather Center. In the event an ongoing significant weather event occurred, the weekday edition of PM Edition began one hour earlier, preempting long-form programming during the 3pm-4pm eastern timeslot. A major shift in The Weather Channel's programming schedule began on September 27, 2010. With this change, PM Edition became a weekend only show, airing four hour-long blocks at 4pm, 7pm, 10pm and 1am Eastern Time. Carl Parker and Heather Tesch, the hosts of Weekend Now, became the hosts of the 4pm eastern hour, while Kim Cunningham and Adam Berg stayed as hosts of the remaining hour-long blocks. Soon after, PM Edition only aired a one-hour block at 4pm eastern and was replaced with Weather Center for the remaining hour blocks. Due to this, Maria LaRosa and Todd Santos began hosting the 4pm eastern hour of PM Edition. On March 31, 2012, PM Edition came to an official end. A week prior, schedule changes were announced that involved moving the weekend afternoon schedule to all days, with Weather Center Live airing at 4pm Eastern Time. The addition of Weather Center Live airing at 4pm Eastern Time was implemented into the weekend schedule, thus ending PM Edition's runtime.
