Isn't it water is a good conductor of electricity? How come you don't get shock standing understand a power line when it rains. Or specifically. Supposed the rain is continuous (or a building has leaked water from the tank), and it touches the power line hot wire.. can you get a shock if there is continuous path of water between you and the power line?
Well, according to this discussion, at worse the air is 0.2133% water in a hard storm. That's a lot of room for air, which is a great electrical insulator. From this, you can see why it's safe to stay under high-power lines when it's raining.
If there were a direct water connection between you and the line, it would be very dangerous indeed !