What does a black cloud mean?

Black Cloud In The Sky

When you can see the Black Cloud in the sky?

In the rainy season you can see the black cloud in the sky.

Now what does a black cloud meaning?

It is common belief within medicine that certain doctors carry clouds, black or white. Simply put, a black cloud harbors disaster. When a black cloud is on call, bad things happen; the heavens open wide and storm emergencies and rare negative outcomes. White clouds float gracefully through their medical training.