Answer:
The kind of weather usually forms over the Northwest United States in the summer because of maritime polar air masses is fog
Explanation:
Continental polar or continental arctic air masses usually create high pressure, cold temperatures, and low dew points.These air masses are cool, moist, and unstable. During the summer season in the Northwest United States, these air masses deliver cool conditions to shore areas. and usually create fog. The reason that they create moist or fog is that these air masses usually collect warmth and moisture from the ocean.
