Quote:
Originally Posted by polarisman14
Not to start an argument, but I was under the impression that the criteria for ice in was that the Mount was no longer able to make it to its normal ports of call. Not sure if the entire route needs to be frozen or just a good portion of it, but that's my understanding. 
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I believe that ice-in has historically been when the lake is complete frozen over solid enough for it not to blow out the next day (a skim coat can disappear overnight with a few degree temp change or some wind). The definition that you gave is the reverse to ice out (the lake does not have to be completely clear of ice to have ice-out called).