On a busy day for American skiers and snowboarders,
Vonn, who is chasing the women's career record for World Cup victories, remains one short after finishing 10th in the fog and snow at Cortina d'Ampezzo, Italy, on Friday.
"I charged but I had a hard time seeing everything," she said after the downhill, adding: "The pressure will be there until I break the record."
Jacobellis fared better in snowboard cross at the world championships in Kreischberg, Austria. Though her start was off, she was able to finish strongly to add to previous world titles in 2005, '07 and '11.
In Wengen, Switzerland,
"It wasn't great skiing," Ligety said. "My turns were really grindy in some places."