Putting more thought into this I think it would be a better idea to make it easier to find the nuke, instead of turning it into a situation where you're looking for a strange hiding spot it should be about putting up a fight in order to stop the launch. I remember when Born in Blood launched on on SSRP 1 and everyone had to team up to take down the entire base, it was great. Now most of the time you don't even find it at all as people just place them in the most difficult to reach spot possible.

As for how this would be done I'm not quite sure, maybe it could emit a sound or the district that it's being launched in could be specified when the launch is started.