Is fog from an actual cloud in the sky?

Question

if so, could fog also produce lighting when at ground level in the right conditions or that could never happen?

Answer 1

i think fog is cloud but not concentrated.

you cant get really concentrated fog in ground level to cause lightnining

Answer 2

Fog IS a cloud thats come down to ground level. Lightning wont happen for many and varied reasons.

Answer 3

Not on this planet the atmosphere is not dense enough to support that kind of weather... at least not yet. I believe it would theoretically be possible under different conditions on perhaps a more massive planet provided it still had a surface (not a gas giant).

Answer 4

Fog is an actual cloud, usually a stratus one. Fog forms when there's a  difference between temperature and dew-point of 2.8C or less.

I think there has to be a certain air pressure or something (like being really high up, for example on a mountain where there are clouds that are static or whatever. I dont think storm clouds ever form low enough to be fog at normal ground level... but if you were in a high place and there was fog, and THEN it got stormy... yeah.

Answer 5

Fog is mist and moisture build-up, which is a bit different than clouds. Perhaps some "clouds" are "containers" for mist.