The 11-year-old, who is hoping to become Britain’s youngest ever Olympian, suffered skull fractures and broke her left wrist and hand, before being taken to hospital by helicopter.
Brown, who has now left hospital, is expected to make a full recovery and revealed that her helmet saved her life.
“Sky landed head-first off a ramp on her hand,” her father Stewart told BBC. “When she first came to hospital, everyone was fearful for her life.
“Sky had the gnarliest fall she’s ever had and is lucky to be alive. Sky remains positive and strong, the whole medical team is shocked to see her positivity.”
Sky Brown: Nothing will stop me
While such a huge fall off a half-pipe would dent most skaters' confidence, the skateboarding prodigy is already looking forward to getting back on four wheels.
“This will not stop me,” Sky said in an Instagram video from her hospital bed. “I am going for gold in Tokyo 2021. I’m going to push boundaries for girls with my skating and surfing. I’m going for gold in 2021 and nothing will stop me.
“I don’t usually post my falls or talk about them, because I want people to see the fun in what I do, but this was my worst fall.
“I want everybody to know that it’s okay, don’t worry, I’m okay. It’s okay to fall sometimes, I’m just going to get back up and push even harder. I know there are a lot of things going on in the world right now.
“I’m excited to come back even stronger and even tougher. My heart wants to go so hard right now. I’m just waiting for my body to catch up.”