Which of the following would NOT be associated with stable atmospheric conditions?

a. widespread fog

b. temperature inversion

c. dreary overcast with light drizzle

d. afternoon thunder showers

The afternoon thundershowers would not be associated with stable atmospheric conditions.

Explanation:

Thundershowers, in the first place, are an indicator of unstable atmospheric conditions. When there are thundershowers in the middle of the day, the air packets in the region are said to have behaved abnormally owing to the changing pressures. During thundershowers, the winds are dominant and wild. They flow in unpredictable directions and cause a disturbance in the atmosphere making it highly unstable.

D

Explanation:

Thunderstorms are caused by unstable atmospheric conditions. The conditions are created by air masses of different densities. Warm air rises while cool air moves in rapidly to replace the rising air. Stability of an atmosphere is gauged by its tendency to resist vertical movement.