Figure 3.32

Cumulonimbus clouds and hail. (A) Strong updrafts keep hailstones suspended in the cloud, allowing them to accumulate more ice. (B) This thunderstorm in the Black Rock Desert in Nevada is producing a deluge of heavy rain and hail. The hail is visible as the white curtain descending from the base of the cumulonimbus cloud.

(B. George Post/Science Source)