do nothing at all
be safe
Unplug all electrical equipment
ignoring safety precautions
none
Yes
NO
There are many precautions you can take after a lightening storm. You could go out and seek immediate shelter for example.
A storm accompanied by lightning (electrical discharge) is called an electrical storm.
Unplug all electrical equipment
Assuming that you are playing your Wii U inside, playing the Wii U during a rainstorm should not pose any risk to the system. In the event of an electrical storm, you should take precautions as you would with any other device; Turn off and unplug any sensitive equipment for the duration of the storm.
Unplug all electrical equipment
That's how you spell it. The kind in the sky during a storm...