by Hikin_Jim » Thu Jun 21, 2007 10:25 pm
Snow load is a concern. A three season often can't take a good dump of snow without collapsing. Some three season tents are better than others. My Sierra Designs Orion AST sheds snow pretty well.
Wind is also an issue. I've been through some pretty good wind storms at Little Round Valley and at High Meadow Spgs (in the SGW). You want something solid.
With fresh powder, having a lot of mesh is a "no go." The blowing snow will get inside. With consolidated snow, mesh is less of an issue, but mesh does not retain heat as well. On the other hand, closing every vent to retain heat sometimes backfires; you get so much condensation that you soak up your sleeping bag -- a really bad idea with down.
Be wary of single wall tents. I've had major condensation problems with my Kelty Dart I (discontinued model now I think). It's light as a dream, but it has unsolvable condensation problems in cold weather.
There are 3+season tents (extended 3 season tents) that you could check into. A little heavier than a 3 three season but not quite a four. I believe Sierra Designs makes a model and probably a couple of other manufacturers. There are also convertible tents where one can remove certain zip out panels and certain poles or segments of poles. I haven't personally tried any 3+ season or convertible tents.
Another option is to RENT a four season tent as needed. A16 rents 4 season tents as does I think REI Santa Ana. Most REI's and all Sport Chalets do NOT rent 4 season tents. I figure for the once or twice a year I really need a four season tent, I'll just rent. The things are freakin' pricey. A lot of my winter hikes I do at lower elevations (below 6000 in the San Gabriels for example), where I can use a 3 season in the "dead of winter."