Snow's affect on orchids

[Pilot]

I know, its a strange title, but one that may have some relevance. Consider, if you will, that we got a foot of snow recently and when it isn't snowing (or raining etc), Colorado is a very very sunny place (it isn't just cloudy like the Northeast can be this time of year). Anyway, I have a phal schill in a place in my solarium where it normally would not be but because of the weak sun of Winter, it got moved to a better spot. Well I noticed yesterday that one of the leaves its showing some darkening-- as in it looks like it's suffered some damage and it showing some dead/scar tissue. So I moved it back to where it normally lives but wondered, how could this happen?

The plant had been in that spot for a month or so but it was only recently that we had the snow on the ground. When you walk into the solarium, it was noticeably BRIGHTER, than it normally would be without the snow on the ground. Snow is a great reflector, but would it do enough to stress and even "sun burn" some of my phals? I wouldn't think so but having several phals that seem a little over-sunned, I believe this could be the case.

Do any other snow dwellers experience the same thing? Light input increases dramatically with a snow pack on the ground?