Hilleberg - Keron 4 GT

I think it would hold up very well in the conditions you described. If you really want to endure extreme conditions, you’ll probably want a 4 person Hilleberg like a Keron or equivalent. To me the REI Basecamp is a humongous heavy car camping tent. It has a shape like geodesic dome tents like the tried and tested North Face VE 25. It’s just much taller. Since I have expedition tents for those types of conditions, I reserve my REI Basecamp for a car camping. It’s rated for four seasons, at least my version was when I bought it, so I think it would do its part in terms of handling snow loads, and winds, if you do your part to stake it out appropriately. But it is much taller than my mountaineering tents so it will catch more wind.

Yes I’ve used it but not in extreme wind or snow.

Hillebergs really are worth the money, I had a Keron 4GT for years, used it canoe camping with my 135lb dog. They've gotten a lot more expensive in the last few years, unfortunately.

For alpine, windy or snowy conditions, nothing beats a Hilleberg. Pricey though. Akto is my favorite one man shelter of all time (tunnel style). Soulo for a freestanding one man, but with a significant weight penalty. The Rogen is a sweet freestanding two man design. Has more airflow than some of their other models, but will handle wind like a champ. Excellent weight/space/weather compromise.

Hilleberg is solid but damn those prices hurt. If you're not doing serious mountaineering the MSR Hubba series is way more reasonable and still built like a tank

People shit on hilleberg prices till they use a hilleberg in less than ideal weather. I’ll tolerate the price for the long life and ability to handle some nasty weather. Most places in the states below tree line don’t need one though.

Hilleberg, TarpTent, SlingFin, Samaya. Real expeditions are more likely to choose Hilleberg. Their strongest tents are not super light, but they are made to withstand serious weather.

if money isnt a thing then hilleberg, black label series, a staika model kept me and my guide protected and safe when it snowed 14 inches on a high country elk hunt, they are awesome, im from Tennessee we dont need best quality expedition tents generally even in the eastern mountains. but having used that one for a week i can say that one was great.

I swear by my Hilleberg, but that's a terrible deal, even on a great tent.

Naturally I’d say buy a Hilleberg. Yes, they’re expensive, but it will last a lifetime.

Hilleberg is the tent for severe weather. They have different lines depending on how you want to trade weight versus sturdiness. None are "ultralight", but that is not what you are looking for in extreme cold/winds/snow.