Steady precipitation preceding a front is an indication of which cloud type and turbulence level?

• A. Stratiform clouds with little or no turbulence
• B. Cumulonimbus clouds with heavy turbulence
• C. Altocumulus clouds with moderate turbulence
• D. Cirrostratus clouds with variable turbulence

Answer: (A)

Fronts change how air rises, so the way precipitation develops tells you about the cloud type and the turbulence to expect. Steady, widespread precipitation ahead of a front comes from stratiform clouds forming in broad, gentle lifting. These clouds—think layered ones like nimbostratus or altostratus—produce rain that is continuous and uniform, and the air tends to be smooth, with little turbulence. That’s why this scenario fits stratiform clouds with little or no turbulence.

In contrast, convective systems tied to fronts—cumulonimbus clouds—bring strong, gusty, and unpredictable turbulence; mid-level altocumulus can bring some turbulence but not the steady, uniform rain ahead of a front; cirrostratus is a high, thin layer that usually doesn’t produce steady precipitation.