What Causes Lightning Without Thunder -

In reality, there is no such thing as silent lightning. Here is the science behind why you’re seeing the flash but missing the roar. Distance is the Deciding Factor

Thunder is a physical shockwave. As it travels, it interacts with different layers of air temperature. Sometimes, the sound waves are refracted (bent) upward into the higher atmosphere. This creates a "shadow zone" on the ground where the lightning is visible, but the sound literally passes over your head. Why Do We Call It "Heat Lightning"? What Causes Lightning Without Thunder

The Mystery of Silent Light: What Causes Lightning Without Thunder? In reality, there is no such thing as silent lightning

Here is a blog post breaking down the science behind this glowing phenomenon. As it travels, it interacts with different layers

If you'd like to dive deeper into the science of summer weather: (the "Flash-to-Bang" method)