When Moses raised his rod, heaven answered with a miracle that defied nature itself.
The Targum Pseudo-Jonathan on Exodus 9:23 describes it: "Mosheh lifted up his rod toward the height of the heavens, and the Lord gave forth thunders and hailstones with flaming fire upon the ground; the Lord made the hail descend upon the land of Mizraim."
Thunder. Hail. And fire burning inside the hail.
The sages who transmitted this Aramaic paraphrase, preserved in the Targum long associated with Yonatan ben Uzziel, dwelled on the paradox. Fire and ice are enemies. One should cancel the other. And yet the Holy One caused them to make peace long enough to strike Egypt together. The ice did not quench the flame. The flame did not melt the ice. Each carried out its mission, then withdrew.
The Maggid teaches: when God wills it, the most opposed forces in creation cooperate. What the natural world insists is impossible, the Creator accomplishes without difficulty. This miracle inside the miracle is the Targum's way of saying — do not imagine that Egypt was struck by ordinary weather. This was weather overruled.
The storm was not a storm. It was a signature.