A 16-year-old girl who depends on insulin has been missing from Ada, Oklahoma, since Wednesday morning, prompting an Endangered Missing Advisory. Melissa Black was last seen at approximately 9 a.m. on Wednesday, September 9, 2026, in Ada, wearing a white t-shirt with a red or orange graphic on the front and back, along with dark-colored pants. She is described as 5 feet 6 inches tall, weighing 172 pounds, with brown hair and brown eyes, according to News 9.
The Oklahoma Highway Patrol issued the advisory identifying Black as an at-risk missing person, according to News 9.
Why Her Diabetes Makes Every Hour Count
Black's insulin dependence adds a time-sensitive layer to the search, as noted by News 9.
Authorities are seeking prompt public assistance because Black depends on insulin.
How Ada Police and the State Are Coordinating
The public has been asked to call 911 immediately if they see Black or have information about her whereabouts.
According to the Oklahoma State Bureau of Investigation, the Oklahoma Missing Person Clearinghouse assists law enforcement agencies and families with resources to help locate missing people.
The Advisory in Black's Case
The advisory gives the public identifying details to use when reporting a possible sighting.
Oklahoma's missing-person framework also includes requirements for entering cases into the National Missing and Unidentified Persons System.
How Oklahoma's system works
The OSBI says Oklahoma lawmakers passed Francine's Law in November 2019, redefining the term missing person and requiring a missing person to be entered into the National Missing and Unidentified Persons System within 30 days. The verified OSBI information cited here does not specify how Endangered Missing Advisories are issued or provide recent statewide totals for those alerts, so no frequency figure is included.
Anyone with information on Melissa Black's whereabouts is urged to call 911 right away.
