I could be wrong, goodness knows it wouldn’t be the first, or the last time, but that’s awfully high for flames. The fireball from an accumulation of gas might be that high for a moment, but not sustained.
We’ll just have to wait and see.
Here are a couple of links to a gas fire in Chicago in 1998. This fire was fed by a high pressure 24" gas line that was ruptured by construction equipment. It took 30 minutes for the pipeline to shut down and for the residual pressure to escape.
This comes pretty close: Video of Devil's Cigarette Lighter
The one mention on ABC radio news said one hundred feet.