The Latest on the Detroit Grand Prix (all times local):
The start of the Detroit Grand Prix has been delayed.
A severe thunderstorm warning led to the track and stands being cleared about 90 minutes before the start of the race.
Race officials were unable to provide estimates for a possible start time for the first of two IndyCar races.
Thunderstorms may delay the first of two Detroit Grand Prix races.
Spectators on Belle Isle were advised to exit the stands and seek shelter about 90 minutes prior to the scheduled start of the race Saturday afternoon.
The National Weather Service issued a severe thunderstorm warning that was to end just minutes before the first of two races this weekend in the Motor City was to begin.
Alexander Rossi looks like he may be the driver to beat at the Detroit Grand Prix.
Rossi started first when he went on to win four of the six races in his career. He earned the pole for of two races scheduled on Belle Isle. Severe weather in the area might push back the mid-afternoon start of the race.
Rossi hopes his next run in the Motor City goes better than his last one on the 2.35-mile road course on the banks of the Detroit River.
He had the pole in the second of two races last year and led 46 of 63 laps. But locked up his brakes late in the race when under pressure from Ryan Hunter-Reay. Rossi ended up overshooting a turn and puncturing a tire, requiring a pit stop, and finished 12th.
The Andretti Autosport driver had a second-place finish at the Indianapolis 500 , coming up just short to Simon Pagenaud of Team Penske.
Alexander Rossi won his second pole of the season, leading qualifying for the first of two Detroit Grand Prix races.
The Andretti Autosport driver, coming off a second-place finish at the Indianapolis 500, turned the fastest lap Saturday in just more than 1 minute and 14 seconds on the 2.35-mile road course.
Josef Newgarden qualified second, followed by Scott Dixon and rookies Felix Rosenqvist and Colton Herta. Indy 500 champion and points leader Simon Pagenaud will start 13th in the 22-car field on Belle Isle.
Rossi has taken advantage of the pole to win four of six races, including this year at Long Beach. Rossi earned the pole at the last race in Detroit, but finished 12th after puncturing a tire.
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