Which weather condition is worse — blizzard, polar vortex or ice storm?

Which weather condition is worse — blizzard, polar vortex or ice storm?

SAM STARKIE Marquette “Polar vortex. I just think about it in survival terms. I think it would be the worst conditions to try and stay alive in.”
JOHN GIERKE Marquette “Ice storm.”
ANGELA RAYHORN Marquette “Ice storm for sure.”
AUSTIN DUPRAS Marquette “Blizzards, definitely. M-28 gets so dangerous and there are so many accidents in blizzards.”