This video was of Tuesday’s tornadoes in southwest Oklahoma. Martin is an expert photographer so he uses a tripod and doesn’t pan and tilt all around. This gives you a terrific view — in HD no less (just adjust the “settings” where it usually says something like “360p”) — of the storm.
At about 3:30 in you can hear the “train” sound of the tornado. At 5:50, he says, “sounds like a waterfall, as usual” and you can here it in the soundtrack.