This second digital subchannel first became active in 2005 when WALB added NBC Weather Plus. Known as "WALB 24/7 Weather", the service gave continuous forecasts for up to thirty cities around Southwestern Georgia. After NBC Weather Plus shut down in December 2008, WALB-DT2 became part of This TV. It was announced November 19, 2010 WALB would begin airing ABC on this second digital subchannel beginning New Year's Day 2011. The actual launch occurred April 27, 2011, which at that point This TV was dropped.
The addition of the network brings back ABC to an Albany-based station since WVGA was closed down. If not for the delay, WALB-DT2 would have represented the network's 240th affiliate.  However, NBC affiliate KSBW in Salinas, California launched its own ABC second digital subchannel on April 18 as the network's actual 240th affiliate just one week ahead of WALB-DT2. This station is the second subchannel affiliate of ABC established in the state of Georgia after WGXA-DT2 in Macon.
With the introduction of ABC on WALB-DT2, there are simulcasts of local news from the main channel. Specifically, this includes the second hour of Good Morning Georgia, midday show at noon, as well as weeknight newscasts at 6 and 11. The area's first prime time broadcast at 7 was added on weeknights exclusive to the ABC subchannel. Weekend newscasts are simulcasted on both channels although there may be delays or pre-emptions on one due to network obligations. In addition to its main studios, WALB operates bureaus in Thomasville (on North Broad Street) and Valdosta (on North Patterson Street). The station operates its own weather radar known as "WALB 24/7 Radar" at Southwest Georgia Regional Airport.