Didn't look like there was much in terms of flames after the power cut out... I'm assuming that was mostly steam and not smoke as you can hear it boiling through the bark at points in the video.
Had a 4" limb from a neighbor's tree fall on the primary a few years back... Not much in terms of flames, but the line did cut about halfway through the limb before the power was cut. The tree survived, although it was trimmed a little nicer after the incident.
