The Hail ClipArt gallery offers 2 illustrations of hailstones. For illustrations related to the cause of hailstone formation, please see the Meteorology gallery.

The wind is supposed to rotate as in a cyclone, only the axis of the whirl is horizontal instead of vertical. Two horizontal layers of cloud exist-the upper layer of snow, the lower, or rain. The snowflakes, which form the nuclei of the hailstones, are caught in the whirl, are dipped in rapid succession into the two clouds, thus receiving alternate coatings of ice and snow, until at last they are hurried to the ground.

Rotary Theory of Hail

The wind is supposed to rotate as in a cyclone, only the axis of the whirl is horizontal instead of…

Concentric layers, similar to those of an onion, will be noticed, arranged around a central nucleus, sometimes of ice and sometimes of snow, through generally the latter. The stones are more or less oblately spheroidal in shape. Their general weight varies from a few grains to several ounces, but they have been known to way several pounds.

Structure of a Hailstone

Concentric layers, similar to those of an onion, will be noticed, arranged around a central nucleus,…