Question

A roll cloud forms in association with which other common thunderstorm feature?

1) the updraft
2) the precipitation
3) the gust front
4) the anvil

Answer 1

A roll cloud forms in association with the gust front of a thunderstorm. The gust front undercuts warm air, causing it to lift and cool, leading to the formation of roll clouds.

Step-by-step explanation:

A roll cloud is a type of arcus cloud that is often associated with a thunderstorm feature known as the gust front. The gust front is the leading edge of cool air rushing down and out from a thunderstorm's downdraft, spreading out across the land surface. This outflow undercuts warm air in front of the storm, sometimes causing roll clouds to form as the warm, moist air is lifted, cools, and condenses.