A "lightning storm" refers to a weather event where there are lots of bright flashes of light in the sky called lightning, often accompanied by thunder and heavy rain. Full definition
Apart from new enemies and new terrain events (such as lightning storm instead of waves), the second island feels just like a repetition of the first one. (indiewatch.net)
Eventually, the player can harness the elements throughout the 20 different stages to cast lightning storms across the forest. (metacritic.com)
It isn't something you think about often, but summer storms can cause big lightning storms and heavy rains. (trustedchoice.com)