Last session the party is next to a building, at night, in the desert. 10th level caster casts lightning bolt off the side of a building. (Bank shot to get a line of bad guys) The question is how much noise does a lightning bolt make, and would bouncing it off the wall wake the inhabitants inside. Now granted it is a thick wall of 10 feet. I can't believe that it would be as loud a lighting bolt that we are all used to hearing. The lighting bolt is only 120 foot long so it's not moving as much air as the lighting bolts that we know. There is nothing in the rules about thundering noise. It is powerful enough to melt low melting point metals and catch combustibles on fire. The session ended right after this battle so I have time to send out the inhabitants of the building at the start of next session. How would you handle this?

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