Maybe the storm affects Desmond's powers. It causes a psychotic breakdown and he is able to see a point where he might die but cannot tell. Desmond side effects may be that he somehow jumps back and forth from the present to the past and/or future. Thats why he yells at Faraday but Faraday can't remember. Either he is in the past so does not know Desmond yet or in the future but Faraday does not remember. Apparently he suffers from some amnesia since he can only remember two of the three cards.

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