Heat lightning

（重定向自Heat lightening）

Distant lightning near Louisville (Kentucky)

Heat lightning is the name used for the faint flashes of lightning on the horizon or other clouds from distant thunderstorms that do not have accompanying sounds of thunder. This happens because the lightning occurs very far away and the sound dissipates before it reaches the observer. The term is a little misleading because it has nothing to do with the heat of the lightning itself. At night, it is possible to see the flashes of lightning from very far distances, up to 100 miles, but the sound doesn't carry that far. Lightning results from the discharge of negative ions created from the friction of ice and water particles bumping into each other at the bottom of a cloud. Heat lightning can be an early warning sign that thunderstorms are approaching. In Florida, heat lightning is often seen out over the water at night, the remnants of storms that formed during the day along a sea breeze front coming in from the opposite coast.

单词	Heat lightening
释义	Heat lightening 英语百科 Heat lightning （重定向自Heat lightening） Heat lightning is the name used for the faint flashes of lightning on the horizon or other clouds from distant thunderstorms that do not have accompanying sounds of thunder. This happens because the lightning occurs very far away and the sound dissipates before it reaches the observer. The term is a little misleading because it has nothing to do with the heat of the lightning itself. At night, it is possible to see the flashes of lightning from very far distances, up to 100 miles, but the sound doesn't carry that far. Lightning results from the discharge of negative ions created from the friction of ice and water particles bumping into each other at the bottom of a cloud. Heat lightning can be an early warning sign that thunderstorms are approaching. In Florida, heat lightning is often seen out over the water at night, the remnants of storms that formed during the day along a sea breeze front coming in from the opposite coast.
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