Which conditions are characteristic of unstable air?

Choices

• Stratiform clouds, poor visibility, and smooth air

  Those describe stable air, not unstable air.

• ✓ Cumuliform clouds, good visibility, and turbulencecorrect

  Unstable air rises freely, producing cumuliform clouds, turbulence, and good visibility.

• Steady precipitation with no vertical development

  Steady, layered precipitation is typical of stable air.

• Fog and low ceilings with light winds

  Fog and low ceilings are associated with stable, saturated air.