Sforno on Exodus 9:24/ספורנו על שמות ט׳:כ״ד

1ואש מתלקחת בתוך הברד. Driven by the immense velocity and pressure of the descending hailstones. The heat generated in the atmosphere resulted in unnatural sounds being heard everywhere. Both hard and soft plants were destroyed by the hail. Verse 25 spells all this out in detail.