Grew up in Wisconsin, this wouldn't work at all. I've been around a roaring bonfire in winter. There's a massive temperature difference a few feet in any direct

Grew up in Wisconsin, this wouldn't work at all. I've been around a roaring bonfire in winter. There's a massive temperature difference a few feet in any direction. It's far too easy to overheat or freeze if you aren't paying attention. Any amount of wind makes this more complicated. Radiative heating outside, in winter only works if you have some kind of shelter to reflect and contain the heat. Even then you have to be mindful of your environment.