The forecasted thunder never came, but as the skies cleared in the second half, lightning struck off Emanuel Reynoso's left foot.
After knocking on the door throughout the first half, Reynoso found the bottom right corner from the top of the box to break a scoreless tie in the 72nd minute. Goals from Kervin Arriaga in the 84th and Robin Lod in the 88th after Chicago went down a man sealed Minnesota United's 3-0 victory over the Fire.
The victory is the Loons' second in a row in MLS play. Across all competitions, the Loons scored eight goals this week after failing to top a single goal in the first six games.
"I think we're getting better, but not where we want to be," coach Adrian Heath said. "I still don't think we put a really consistent 90 minutes together, but it bodes well we're winning games, and I think that they will get a little bit more confidence again after the week we've had."
Reynoso first looked to have broken through in the 10th minute when Robin Lod fed him a through ball on the left side of the box. The midfielder chipped the keeper, but the raised offsides flag kept the game at a dead lock.
Reynoso nearly connected again eight minutes later, curling a left-footed set piece off the crossbar.
"I thought he got better as the game got on," Heath said of Reynoso. "As I've said before, he's MVP talent. We have to make sure he gets that consistency, but I feel as though he's getting there now."
After a slow start to the season, Reynoso has begun to find his rhythm. He recorded his first two assists of the season in the 3-1 win over Colorado last weekend. Saturday's goal was his second of the season and the first from open play.