On full moon day the FM stations are very clear. Why like this?

This I used to experience and also on fog days the same thing happens. Do some one else feel like this/On full moon day the FM stations are very clear. Why like this?
* The atmospere is clean and clear*On full moon day the FM stations are very clear. Why like this?
Nothing to do with the moon.





At this time of year, temperature inversions occur, especially around dawn and dusk, which means the air above is warmer than the air below.


These conditions (don't ask me how) cause FM signals to ';duct'; rather than escape off into space, creating stronger signals or signals from relatively distant transmitters that are not normally heard.





The reason you see the moon is, firstly, it's bright and obvious when it's full and, secondly, because there is no cloud, a typical situation when there's a temperature inversion.





Hope this helps.





Ham radio operators use inversions to contact other hams that they are not normally able to reach.