Despite the foggy conditions, the 29-year-old shot clean and finished in a time of 22 min 4.9sec for her first IBU World Cup win this season and fourth of her career.

Germany's Denise Herrmann finished 33.1 seconds back in the runners-up spot, with one penalty.

France's Julia Simon matched her career-best IBU World Cup finish in third place, ending 47.4 seconds behind with one penalty.

Røiseland, who missed last month's IBU World Cup stop in Annecy-Le Grand Bornand in France, was thrilled with her victory, admitting her time off at the end of last year helped.

"I had a good Christmas and did a lot of good training," she said.

"I was really excited today and had a lot of energy. 

"It was so fun and I am so glad that I did the job today and hit 20…sorry 10 targets."

On a day when only three women shot clean, Røiseland added: "I am not sure what the key was. 

"I was really focused. 

"I just did what I should do and not focus on the wind and rain or anything; just on the job. 

"It worked this time."

Italy's Dorothea Wierer, the leader of the overall women's IBU World Cup standings, finished fourth today with one penalty.

She now sits on 347 points and has a lead of 20 over nearest challenger Tiril Eckhoff of Norway.

Eckhoff, the winner of the last four events before the Christmas break, had two penalties today and came fifth.

Third in the overall standings with 289 points is Norway's Ingrid Landmark Tandrevold, who finished way down in 34th place today.