The incident happened in section 111. A witness who sat nearby said the woman's body appeared to go "totally limp." Emergency medical technicians quickly went into the stands and administered CPR after they laid her down over several seats.
"It happened really fast," the witness said. "It's amazing how quickly the EMTs got there."
The woman's name was not immediately available. She was 67 years old.
Blazer's Edge offers condolences to family and loved ones.
More details as they become available.
Update: Trail Blazers press release
The Trail Blazers and Rose Quarter released this statement Friday afternoon:
"During Portland's game vs. Dallas on Thursday night, Trail Blazers fan Sandra Zickefoose suffered a medical emergency. She was treated immediately by the emergency response team inside the Moda Center and transported to Legacy Emanuel Medical Center. The organization has since been informed that Ms. Zickefoose, age 67, has died. She and her husband, Michael Cowan, have been Trail Blazers season ticketholders since 2011 and reside in Southwest Portland".
Update: Tweets from Mike Tokito
Based on the reaction of players, they were apparently told the woman was a season ticket holder.— Mike Tokito (@mtokito) November 7, 2014
Nicolas Batum said when commenting on being saddened by fan's death: "This team, this city, this community, we are a big family."— Mike Tokito (@mtokito) November 7, 2014