Heat lightning - Wikipedia, the free encyclopedia

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** Heat lightning **

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Distant lightning near Louisville (Kentucky)
For the 1934 film, see Heat Lightning (film).

*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.^[1]
The term is a little misleading because it has nothing to do with the heat
of the lightning itself. At night, [one] can see the flashes of lightning
from very far distances, up to 100 miles. But the sound doesn't carry near
that far. So down through the years, when [one] see[s] the lightning but
can't hear the thunder, the term heat lightning has been applied to it.^[2]
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.

*Contents*

· 1 Atmosphere
· 2 Curvature
· 3 Under optimum conditions
· 4 Silent lightning
· 5 See also
· 6 References
· 7 External links

*Atmosphere[edit]*

The movement of sound in the atmosphere depends on the properties of the
air, such as temperature and density. Because temperature and density
change with height, the sound of thunder is refracted through the
troposphere. This refraction results in spaces through which the thunder
does not propagate. The sound


Source: en.wikipedia.org/wiki/Heat_lightning


is there heat lightning

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