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A. Schuyler
A. Schuyler, Research Analyst
Category: General
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Experience:  30 years in research
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Is it true that when clouds are dark grey theyre full of rain?

Resolved Question:

Is it true that when clouds are dark grey they're full of rain? If not, what is the reason why some clouds are really dark and others aren't ? Because the sun is always behind the clouds (at daytime hours) so why do some appear darker?
Submitted: 5 years ago.
Category: General
Expert:  A. Schuyler replied 5 years ago.



Welcome to Just Answer and thanks for your question. It is far more complicated than gray clouds "containing rain." Here is an excellent site that gives some simple lessons about clouds.


Low-lying, dark gray, well-formed clouds (Stratus clouds) are often seen along coastlines and after fog. They also may appear when cold, moist air is conveyed horizontally over a region. The stratocululus clouds vary more in color than stratus but also occur when horizontal cold air pushes over warmer air. They often accompany cold fronts. Less well-defined gray clouds often accompany warm fronts, which do often foretell rain.


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