Zero, with a hundred percent probability of precipitation, is cool, man, cool, even when you're wearing your red flannels. Air traffic's grounded, feeding station's socked in. You can't stuff your gizzard in a blizzard, so how do you survive? Hunker up and sit it out, rationing your reserves, moderating your metabolism. To put it another way, when there's snow on the roof, how do you keep a fire in the furnace? Cool it, man, cool it.