For years I've been eyeballing the big mast in between La Salle and Ottawa for upward lightning, and finally it delivered! This was from the first of several organized thunderstorm clusters that moved through Illinois on May 7. I tried to capture up-close audio recordings of these events although unfortunately the wiper noise drowned a lot of it out. The best audio is at 1:00 if you want to listen there and mute the rest of the video.
Timestamps:
0:04 -- Flash 1 (Highest NLDN peak current: 59kA)
0:35 -- Flash 2
0:59 -- Flash 3
1:12 -- Flash 4
1:23 -- Flash 5
1:42 -- Flash 6
1:59 -- Flash 7
2:28 -- Flash 8 (Best event; triggered by visible negative crawler tree)
EQUIPMENT I USE:
Nikon D5300 DSLR
Sony CyberShot RX100V
www.sony.com/electronics/cameras
YI 4K Action Camera
Model YAS. 1616.INT
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Samsung Galaxy S9 Smartphone
Sony Stereo Digital Voice Recorder
Model ICD-UX570
Video editing done using Shotcut
Lightning information provided by Vaisala's National Lightning Detection Network (NLDN) through weather.us/lightning. Note that I only use this information to roughly estimate stroke intensity and distance, the data may be prone to error on my end and my work is not, and should not be considered to be, a formal evaluation of the NLDN's performance.
Thanks to Tom A. Warner and other lightning physicists and researchers who have helped me understand lightning processes explained in my videos. Tom has created a great resource for individuals interested in learning how lightning works.
ztresearch.blog/education/