Lightning and thunder dreams symbolize sudden change and strong stimulation. Bright, powerful lightning means sudden enlightenment or a surprising opportunity. Being startled by thunder warns of shocking news. Being struck by lightning hints at unexpected luck or a special, chosen experience.
Natural phenomena in a dream like "Lightning and Thunder" are traditionally read as symbols of emotional flow or a major life turning point. Modern psychology often connects such large-scale imagery to feelings about a recent change that felt beyond your control.
Was there a major recent change or decision in your life?