It looks like a rather intense storm and hit.
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Actually, it is not that rare.I have taken photo's of near miss lightning strikes and where they hit there is huge plasma bursts that travel along the ground, while that photo looks like a hit, I would say it was some distance behind as there is no sign of this effect.
at the millions of volts lightening is, a hit would create separate flares to earth from many parts of the plane, the tyres would likely be smoking as well... It would have made the news, however, considering the earthed light towers and buildings are higher than the tail on the 744, it is very likely that if the lightening did come close enough to the terminal it would hit an earthed item rather than an unearthed item (i.e. plane sitting on rubber tires) - the path of least resistance.
I doubt that that lightening is closer than 3-4 km away, just a really cool pic
A plane is normally earthed when parked, it's a requirement for refuelling.
Does it have one of those strips I see hanging off the back of cars?
The discharge straps are used in flight, on the ground it's an earth at the nose:
Who would drink toilet water anyway? Or is that an Adelaide thing?