Here I've made some weather on my desk. I took a cardboard box and put some toy pieces in it and moved all around. This became a thunder. Then I took some paper clips and dropped them into the cardboard box.
I guess you don't believe this thunder sound can be the result of cardboard and pieces ...
This is right. The original thunder lacked of bass and the typical reverberation. Hear yourself.
I edited the thunder original in audacity by adding some bass and gverb to get the above result.
The idea I got from the audio assignment of ds106 'Imitate some Weather' and it is meant to be an assignment concerning week 7 and 8 of the regular course requirements for ds106 students.