White stuff. Falls from the sky. Sure sign of the apocalypse. If you see it, run to the grocery store and get all the foodstuffs you can - don't forget a gun to fight off the crowds. You'll need gas and candles too.
Watch the TV for emergency news, but remember, those people have no idea what's happening either, so take what they say with a grain of salt.
Oh, so like a hurricane then, well except for the white stuff.
Seriously though if it's keeping water out it either has to be pressurized (doubtful if it's using a snorkel for air) or just watertight. If it's watertight it's probably only down to a fairly shallow depth, if it gets too deep the water pressure is going to start pushing water in through the "watertight" seals. Assuming a watertight seal (and not a pressurized vehicle) and given that the pressure at 10m (33 ft) is twice the atmospheric pressure at sea level, I'd be willing to guess that the max depth isn't much more than that (if not less).
If a train station is a place where a train stops, what's a workstation?
