The phrase "a violent lightning" is not correct in standard English usage.
Typically, "lightning" is an uncountable noun and does not take an article like "a."
Example: "The storm brought violent lightning that lit up the sky."
Alternatives: "a fierce lightning" or "a powerful lightning".
He sends his friends in England a dissertation entitled "An Experiment on the Effects of Violent Lightning Bolts Upon a Specimen of Lepidoptera".
Fires in the surrounding region are a daily occurrence, many started by violent lightning storms and some started deliberately.
The purple emperor is midsummer incarnate – its flashing, iridescent purple wings the perfect accompaniment to both sunshine and, this year, violent lightning.
A violent storm -- rain, lightning, thunder -- shakes the plane.
The Department of the Basses-Pyrénées was visited by a violent hailstorm accompanied by lightning, the hailstones doing great damage in the countryside.
The lighthouse keepers had a lucky escape in December 1790 when their tower was hit by lightning during a violent storm.
Mara raises a vicious storm of lightning and flames, a violent ocean crashes at the feet of Siddhartha, who remains meditating in the lotus position.
A commuter plane with 12 persons aboard crashed in a field during a violent thunderstorm, presumably after being struck by lightning; all aboard the aircraft perished.
It took a while – a violent dust storm accompanied by thunder and lightning saw the game halted for an hour in the 61st minute, before Philadelphia, 2012 semi-finalists, saw the game out.
One lucky Japanese resident was in the right place at the right time when he or she managed to capture lightning striking a commuter train during a violent thunderstorm.
