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Because of how dense it is because of all the moisture that it is made up of, which the light is absorbed by, and cannot penetrate as easily as a white cloud (which does not have as much moisture in it).

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12y ago
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12y ago

Because of how dense it is because of all the moisture that it is made up of, which the light is absorbed by, and cannot penetrate as easily as a white cloud (which does not have as much moisture in it).

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12y ago

because it is close to rain or a storm.

add. As the cloud gets thicker (taller) the sunlight from above has more and more difficulty in penetrating. Hence the underside of the cloud becomes dark.

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10y ago

Thunderstorms form from very tall cumulonimbus clouds. These clouds can block out a large amount of sunlight. Generally, the tall a thunderstorm, the stronger it is. The most violent thunderstorms have been known to make day as dark as night.

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16y ago

It is sometimes dark because there is a typhoon

or rain will come

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10y ago

Thunderheads appear dark when view from below because they consist of towering cumulonimbus clouds. These clouds are so thick that they block out a substantial amount of sunlight.

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13y ago

When a cloud fills up with too much water, dark clouds form. That's why dark clouds are often a signal that rain is coming.

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13y ago

Because they are tall and contain allot of water vapour which blocks out sunlight.

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9y ago

The clouds of thunderstorms are called cumulonimbus clouds. These cloudse are generally quite tall and so block out a significant amount of sunlight.

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Q: Why do lightning clouds appear black?
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Related questions

What is the Hebrew translation of clouds and lightning?

Clouds = ananim (עננים) Lightning = barak (ברק) Clouds and lightning = ananim uvarak (עננים וברק)


Where does lightning form?

Lightning forms in clouds.


Does lightning go from earth to clouds or from clouds to earth?

BOTH of those kinds of lightning occur.


Do all clouds cause lightning?

No, clouds out of a blue sky would not affect lightning or lack of it


What can cause lightning?

Lightning is caused by a voltage difference between the clouds and Earth, or between clouds.


What is the lightning between clouds?

Lightning is just really large static. Lightning between clouds is called cloud lightning or sheet lightning and is caused when one cloud has an excessive charge and another cloud has an excessive amount of the opposite cloud. The lightning is used to relieve the clouds charge.


What normally happens when there are dark black clouds in the sky?

When there are dark clouds in the sky, it is a sign that a rain shower is eminent. Clouds full of precipitation are much more dense than other clouds and as a result less sunlight can shine through causing the clouds to appear black.


Where do lightning bolts occur?

lightning bolts occur in the clouds.


What does lightning results from?

The lightning happens because of the pressure of the clouds and it the lightning comes out from the clouds naturally.... (lightning are dangerous so don't try to go up and see if it is right or wrong


How does the surrounding look when a tornado is coming?

Tornadoes typically form in the rear half of a supercell. So tornadoes are often preceded by cloudiness rain, thunder, lightning, and sometimes hail. The clouds in a tornadic storm sometimes appear black or greenish.


What kind of cloud forms lightning?

Cumulonimbus clouds form lightning


What clouds that heavy rain accompaid by thunder and lightning are?

Cumulonimbus clouds.