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Considering this, is heat lightning the same as regular lightning?
There is no difference; heat lightning is nothingmore than lightning generated from a thunderstorm so distantits thunder can't be heard. However, thunder can rarely be heardmore than 15 to 20 miles from the storm.
Hereof, what is heat lightning storm?
The term heat lightning is commonly used todescribe lightning from a distant thunderstorm just too faraway to see the actual cloud-to-ground flash or to hear theaccompanying thunder. Instead, the faint flash seen by theobserver is light being reflected off higher-levelclouds.
Light from a lightning bolt travels outward atover 100,000 miles per second. The flash from a lightningstrike occurring within 10 miles will reach you almostinstantaneously. Heat lightning is known as such becausethunderstorms spawning lightning often occur in thesummertime when temperatures are at their warmest.