תּלמוד אויף ירמיהו 10:13

R Elazar further said in the name of R. Hanina: Come and observe that the way of the Holy One, blessed be He, is not like the way of flesh and blood — The way of flesh and blood is that a man places a pot on the fire and then pours water into it, but God first puts in the water and then sets the pot, to fulfil what is written, “At the sound of his giving a multitude of waters in the heavens” (Jeremiah 10:13).

And for thunders. What is thunder? Samuel said : The clouds in a whirl ; as it is said, "The voice of Thy thunder was in the whirlwind ; the lightnings lighted up the world, the earth trembled and shook" (Ps. Ixxvii. 19). The Rabbis say : The clouds pouring water one into the other; as it is said, "At the sound of His giving a multitude of waters in the heavens" (Jer. x. 13). Rab Aha b. Jacob said : It is a mighty lightning-flash which strikes against a cloud and the latter is shattered into hail-stones. Rab Ashe said : The clouds are hollow and a blast of wind comes and blows across their mouths, so it is like a blast across the mouth of a jar. The most probable view is that of Rab Aha b. Jacob, that the lightning strikes, the clouds are made to rumble and rain descends.