Lightning in your dreams might mirror your sentiments and emotional condition. Whether you see it hit anything or not, a quick flash of light might appear rather explosive. Lightning strikes rapidly and vanishes almost as quickly.
Witnessing this phenomenon in your dream might mean that you have something inside you that is causing pressure, or that you are in a position in your reality where the tension is rising.
You may be concerned that this may end in disaster if you do not handle the emotions or circumstances in a timely manner. Consider what is producing stress in your life and whether there is anything you can do to relieve some of that tension.