Swansea fans are celebrating at Wembley Stadium after winger Nathan Dyer put them ahead against Bradford City in the first half.
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A spokesperson said the lightning strikes had left the "aircraft fuelling system unavailable."
Nearly 1,000 properties have been left without power, and road users have been warned of potentially hazardous conditions.
It follows a surprise summit between South Korea's Moon Jae-in and the North's Kim Jong-un.