I can't tell what's the poem and what's the question, maybe can you put the poem in quotations? Either that or you didn't write it correctly.
Answer:
I honestly have no clue either but I'mma try and "think outside of the box" here so stay with me XD
Explanation:
I mean during thunderstorms there's lightning right? And trees are like the most susceptible thing to lightning strikes because theyre fairly big and tall right? Maybe the trees appearing bright could signify lightning and with lightning comes thunder? I honestly don't know. Or maybe it's relating to some sort of mythology? Like the "heavens" opening up and shining light on the trees to signify rain because a god or something controls the weather? Or maybeee, this might be the best one yet, rain helps plants grow, trees=plants, illuminating of a plant=growth, GROWTH FROM RAIN. Ok I'm done... I hope at least a little of this made sense and maybe helped lol.
Youthful and chatty are connotative, Jump and Bark are denotative
