After having made it to work in a blizzard, only 3 hours late, have warmed yourself up with a nice cup of tea, PTSD is the sudden fading of relief amid the feelings of exhaustion and realisation that you'll have to do this all over again in order to go home, in the dark... and then come back tomorrow.
Can throw one into a catatonic twilight zone of mental and physical paralysis whereby making the decision to finally go outside for whatever reason, even for lunch, becomes impossible, regardless of whether the snow is technically preventing you from going outside or not.
Usually only affects those unused to large amounts of snow.
Fuck going outside, that blizzard gave me PTSD. I'll survive by eating the contents of the stationary cupboard til the snow leaves.