Only five others have surpassed the result 4.56 during the championship in the last 21 years.
“NCAA Champion!
And a new personal best indoors with 4.56!
After a tough month with pain in the ankle, I am happy to end the indoor season strongly ", Gunnarsson writes himself on Instagram.
Outdoors, Gunnarsson - who is trained by Greg Duplantis - has a personal best of 4.60 from 2018, but stubborn injury problems have meant that it has been relatively quiet about the Swede who has long been seen as one of the country's greatest athletics talents.
During Friday's NCAA competitions, the American JuVaughn Harrison, 21, had a magical evening with two giant jumps in the space of two hours. He first struck with 2.30 in the high jump and then 8.45 in the long jump.