August 3, 2009. This was an amazing thunderstorm as the sound was travelling close to 20-25km through rain before I could hear it. Usually I can’t hear thunder when the lightning gets to about 10-12km in distance, but this storm somehow allowed it and the long deep rumblings were fantastic to listen to. In total I made a 40 minute recording of which this is about 7:15 of the best part. Made using a Sound Devices 702 and two Audio Technica AT3032 mics in a binaural arrangement.
The image below was made just 6 days after I made the recording above just east of Red Deer near the NOVA plant at Joffre. Check out my post showing this same image and a few others along with a bit of a story about this storm.