mP Air Mass:

East Coast:

• not as common as west coast mP
• colder than west coast mP
• usually brought onshore by high pressure to the north of us and/or low pressure to the south moving up the coast.

QUESTIONS FOR THOUGHT:

1.  Suppose an mP air mass moving eastward from the Pacific Ocean travels across the United States. Describe all of the modifications that could take place as this air mass moves eastward in winter. In summer.

2.  Explain how an anticyclone during autumn can bring record-breaking low temperatures and cP air to the south-eastern states and only several days later very high temperatures and mT air.