Red lightning is created by the excitation of nitrogen molecules in the atmosphere. It is produced above the clouds during storms. The red lights produced also are known as sprites. More »

Lightning forms when opposite charges between a cloud and the ground or between two clouds develop. The charges have to be large enough to overcome the resistance of air to create a visible lightning spark. A single ligh... More »

Though it is theoretically possible to hear thunder and then see lightning, lightning actually causes thunder, so it has to come first. Thunder is the noise that's caused by the sound of the rapid expansion of air that g... More »

Lightning starts when the atmosphere becomes electrically charged. This occurs when opposite charges begin building between the clouds and the ground. More »

Thunderstorms cause hail when strong winds push raindrops upward into the atmosphere where the extremely cold air supercools the water and causes it to freeze into spheres of ice. This can occur several times, with balls... More »

A bolt of lightning travels at approximately 224,000 miles per hour or approximately 3,700 miles per second. Lightning is a discharge of static electricity that has accumulated as a result of collisions between ice parti... More »

According to the NOAA, the answer is that technically, lightning is a two-way phenomenon. The part that is visible to the naked eye goes from the ground back up to the sky, but only after a path of negatively charged ele... More »