Rain On Window With Thunder

Sitting close to the window, you can trace the outline of each raindrop as it splashes against the windows and glides effortlessly down. The sky is darkening, and you will see the horizon being split by lightning before you hear the great rumble of the thunder. As the thunder hits, the winds speed up too and the rain comes down in powerful torrents of water, cleansing everything in its path. Thunder is the sound caused by lightning. Depending on the distance and nature of the lightning, thunder can range from a sharp, loud crack to a long, low rumble (brontide). The sudden increase in pressure and temperature from lightning produces rapid expansion of the air surrounding and within a bolt of lightning. In turn, this expansion of air creates a sonic shock wave, similar to a sonic boom, which produces the sound of thunder, often referred to as a clap, crack, or peal of thunder. The distance of the lightning can be calculated by the listener based on the time interval from when the lightning is seen to when the sound is heard.