A strange day at the Tour de France on Friday ended with bad news for the French.

A storm caused organizers to shorten the 19th stage. They decided that riders could not safely race over Alpine roads after a hailstorm. There was also a stretch of road that was blocked by a landslide.

Riders had passed the top of the Col d’Iseran, the highest point in this year’s Tour, when they learned the rest of the stage would be canceled. Organizers said the riders’ positions at the top of the Iseran would determine their stage finish. The final 23 miles, which included one more challenging climb, were omitted.

That might not have been great for Julian Alaphilippe of France, who entered the day wearing the yellow jersey as the race’s overall leader. He was trailing in the stage by about two minutes at the top of the Iseran, but planned to make up some or all of that time on the other side of the slope with his impressive descending skills. Instead, he lost his overall lead to Egan Bernal of Colombia, who will wear the yellow jersey in the race’s penultimate stage on Saturday.

Bernal led the Tour by 48 seconds at the conclusion of the stage, with Alaphilippe in second and last year’s winner, Geraint Thomas, in third, 1:16 back.