The shooting happened just before 7:30 p.m. in the 2500 block of South Norman Street, according to police.
When officers arrived on scene, they found a man in his 30s with multiple gunshot wounds. Police believe the man was talking with friends next to a car when a masked man walked up to him and began shooting.
The shooter then got into a waiting car, described as a gray or silver Mercedes Benz, and sped away with a number of other people, according to Det. Jeff Kappel with the Seattle Police Department.
"The suspect approached him on foot, shot him and then ran back to a waiting vehicle -- the Mercedes -- got in it and they sped off," Kappel said.
A woman who was visiting the neighborhood said she heard the gunshots.
"People were screaming, women were screaming, 'Call the police. Call the police,'" she said.
Witnesses told police the shooter was a black man who stands roughly 5'11" tall with a thin build. He has dreadlocks or braids and was wearing a black ski mask.
The victim was taken to Harborview Medical Center with life threatening injuries.
Homicide and CSI are investigating the shooting.