Answer: More commonly, the meeting of a cold front and a warm front will produce rainfall, because the contact of cold and warm will cause water vapor within either air mass to condense, forming water droplets (if the air mass is sufficiently cold enough, this precipitation will be snow or even hail instead of rain).
Step-by-step explanation:
Therefore, as these cold air masses move, the dense air undercuts the warmer air masses forcing the warm air up and over the colder air causing it to rise into the atmosphere.