Storm with continuous thunder

At least two times I have experienced thunderstorms in Daviess County that had a very interesting low rumble of thunder in the distance that never stopped… just a continuous low background rumble that might occasionally have a clap of thunder, but never losing that non-ceasing rumble.

I recorded the audio below of one such storm, which occurred on July 13, 2011.  You can click on the link below to hear it.  (5 minutes, aproximately 4.7 MB).

Storm with continuous thunder