Dear Brother’s and Sister’s,
I would like to share with you two verses of the Quran that talk about the weight of clouds. Astonishingly clouds can carry up to a lot of weight as proven by modern day science and exemplified in the Quran 1400 years ago.
The Quran states:
“And it is He who sends the winds as good tidings before His mercy until, when they have carried heavy rainclouds . . .” (Surah A’raf, 7:57)
“It is He who shows you lightening, [causing] fear and aspiration, and generates the heavy clouds.” (Surah Ra’d, 13:12)
The key words that should be noted in these two ayats is that Allah(SWT) mentions clouds as being heavy. 1400 years ago and even till today people may look upon clouds and it may seem like there are extremely light due to it floating in such high altitudes. However, when you calculate the weight of water inside these clouds it is very interesting that they weigh a lot. As an example, a cumulus cloud can contain up to 300, 000 tons of water which is roughly 300000000 kg or 661386786.555 pounds of water. Suban’Allah the beauty of the Quran. If you do not believe me just look it up yourself and be astonished.
Insha’Allah we all ask Allah(SWT) to forgive us, guide us, protect us, and enter us in Junnah-al-Firdaus.
Check out this website service if you want to learn or memorize quran: http://quranbuddyapp.com
The Seeking Of Truth 
Job 26:8
New International Version
8 He wraps up the waters in his clouds,
yet the clouds do not burst under their weight.
Zechariah 14:6
And it shall come to pass in that day, that there shall not be light, But heavy clouds and thick;
Pesachim 50a:3
The verse states: “And it shall come to pass on that day that there shall not be light, but heavy clouds [ yekarot ] and thickness [ vekippaon ]” .
Berakhot 59a:11(450-550 CE)
There is no contradiction ; for this refers to [a sky] covered with heavy clouds, whereas the former refers to [a sky] covered with light clouds.
Taanit 6b:11
This statement of Rav Pappa is referring to when the sky is overcast with heavy clouds, from which rain will fall all day, whereas that statement of Rav Ḥisda is referring to a morning when the sky is