Robin Roberts thanks viewers on day of bone marrow transplant

FILE - This Aug. 20, 2012 file photo released by ABC shows co-host Robin Roberts during a broadcast of "Good Morning America," in New York. Roberts has said goodbye to "Good Morning America," but only for a while. The "GMA" anchor made her final appearance Thursday, Aug. 30, before going on medical leave for a bone marrow transplant. Roberts' departure was first planned for Friday, but she chose to exit a day early to visit her ailing mother in Mississippi. In July she first disclosed that she has MDS, a blood and bone marrow disease. She will be hospitalized next week to prepare for the transplant. The donor will be her older sister, Sally-Ann Roberts, who was on hand for Thursday's emotional send-off. (AP Photo/ABC, Donna Svennevik, file)
Donna Svennevik
Robin Roberts is shown during a broadcast of "Good Morning America," in New York on Aug. 20, 2012.

(CBS/AP) Robin Roberts sent a video message to "Good Morning America" viewers, thanking them for their support as she faces a bone marrow transplant.

Pictures: Robin Roberts

The "Good Morning America" co-anchor sent the message, which aired on the show Thursday, from her New York hospital bed.

Declaring that "thoughts are so powerful," Roberts told her audience: "I feel the love and I thank you for it."

Roberts is scheduled to have the transplant on Thursday. It comes after 11 days spent in the hospital and eight days of chemotherapy to prepare her for the procedure. The donor is her older sister, Sally-Ann Roberts.

In June, the 51-year-old Roberts disclosed that she has MDS, a rare blood disorder.

Her last day on "GMA" was Aug. 30 before she began extended medical leave from the ABC morning show.