Satellite cloud pictures usually show the ocean in blue, land in green and cloudy and rainy areas in white. When Beijing is thick and white, it means Beijing at that time.

A clear weather appears in the blue and green areas covered by satellite images, so it does not meet the problem.

B. It is correct because there is rainy weather in the white-covered area on the satellite cloud picture.

C. cloudy to sunny weather can only be expressed by weather symbols, which does not meet the meaning of the question.

D. Sandstorm weather can only be expressed by weather symbols, which does not meet the meaning of the question.

Therefore, choose: B.