When lightning forces ground workers indoors, planes can still pull up to gates, saving airlines money and passengers time.

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Another says ordinary lightning hits the ground or a tree and dislodges a glowing mass.

BBC: Ball lightning baffles scientists

The Lightning ended a three-game losing streak while Buffalo failed to make up ground in the race for the final playoff spot in the Eastern Conference.

WSJ: Stamkos, St. Louis send Lightning past Sabres

Such storms produce lightning and rain, but dry air will suck up most of the precipitation before it hits the ground.

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If he is right, an earthquake will generate enormous electrical currents in the ground precisely the sort of thing that would upset the ionosphere and generate strange lights in the form of lightning-related phenomena.

ECONOMIST: Predicting earthquakes