As an mP air mass in the United States moves eastward over the northern Great Plains of the U.S.The air mass is likely going to be modified to a

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Quizplus · Accepted Answer

As the mP air mass moves over the northern Great Plains, it will come into contact with colder land surfaces and experience cooling from below. This will cause it to become colder and drier, and as a result, it will transform into a continental polar (cP) air mass.

As an MP Air Mass in the United States Moves