A 20-year-old Macomb Township man was convicted of second-degree murder Friday for the drunk-driving traffic death of a 26-year-old Shelby Township man over two years ago.

A Macomb County jury deliberated about seven hours over two days before convicting Jack Gerald Robb in the death of Austin “A.J.” Southwell following a two-day trial in the Mount Clemens circuit court.

The jury rejected the lesser charge of manslaughter, punishable by up to 15 years in prison.

He faces a number of years in prison, up to life, when he is sentenced June 25 by Judge Jennifer Faunce. Robb, who had been free after posting a $250,000 bond, was remanded to the county jail to await sentencing.

The incident occurred at about 2 a.m. Jan. 7 at the intersection of Hayes and 21 Mile roads when Robb, who consumed alcohol and smoked marijuana in the hours before, drove a Dodge Ram pickup truck through a red traffic light on northbound Hayes at a speed of 86 mph and crashed broadside into a Honda Civic driven by Southwell.

Robb’s vehicle traveled toward the stoplight for 11 seconds after it turned red and he braked a split second before the collision took place, evidence indicated.

Robb registered a .16 blood-alcohol level and a 5.2 nanogram THC level after the crash. He drank, smoked and skied with friends at Pine Knob Ski and Snowboard Resort near Clarkston in the hours before the crash, according to attorneys.

Southwell had no intoxicants in his system, Assistant Macomb Prosecutor Jeffrey Stone said. His vehicle was traveling 24 mph after it had slowed down or stopped at the red light and had started to accelerate, Stone said.

“Although we would liked to have seen a difference outcome, we respect the decision of the jury,” Robb’s attorney, Peter Torrice, said.

During his courtroom talks with the jury, Torrice attempted to argue Robb was merely grossly negligent, the equivalent of manslaughter.

“Jack did a really stupid thing,” he said. “We’re not asking for a free pass.”

Stone argued Robb’s extremely reckless behavior warranted the murder conviction. Second-degree murder includes a deliberate act to create a high risk of death or great bodily harm, state law says.

“He made deliberate choices that extended far beyond ordinary care,” Stone told jurors.

Among evidence presented at the trial were two SnapChat videos Robb made in his vehicle within a half hour before the crash. In the first one 25 minutes before the crash and one minute before an initial police stop, he films himself chugging a bottle of a blue Smirnoff wine cooler.

“Him slamming that Smirnoff bottle … what does that tell you about Jack had in mind?” Stone said.

Stone was joined by Assistant Macomb Prosecutor Julianne Beslic in prosecuting the case.

Torrice also tried to sway the jury by noting Robb’s youth.

“He looked a lot younger then,” Torrice told jurors.

Robb was 17 and legally a juvenile at the time of the incident but was prosecuted as an adult. He was only six weeks from turning 18 at the time.

Southwell turned 26 the day before he died, and had celebrated with a family dinner in Sterling Heights only hours before.