Exam 11: Air Masses and Fronts

Drylines are most frequently observed in the western half of Texas,Oklahoma,and Kansas,especially during spring and early summer.In these locations,drylines tend to move eastward during the day,then westward toward evening.

Explain why the observation of a halo around the Moon or Sun could forewarn of the arrival of a warm front.​

A situation,where the cold,damp air is confined to the eastern side of mountains,is called​

Wintertime mP air masses are less common along the Atlantic coast of North America than along the Pacific coast mainly because the

In an exceptionally cold winter during which the Great Lakes were entirely covered by ice,lake effect snows would be expected in extremely high frequency and intensity.

When warm and cold air masses collide,the warm air is forced upward.Why does this occur?​

Lake-effect snows are snowstorms that form on the ____ side of a large lake.

Record breaking low temperatures are associated with which air mass?

A good air mass source region is generally flat and of uniform composition with light surface winds.

Explain how the airflow aloft regulates the movement of air masses.​

A front is the transition zone between two air masses of different​

Compared to an mP air mass,mT air is

Regions where air masses originate are known as ____________________.​

"back door" cold front best describes which of the following situations?

In the Central Plains of the United States,continental polar air is welcome in both winter and summer.​

Alternating lines of blue and red on a surface weather chart indicate a(n)

What type of air mass would be responsible for persistent cold,damp weather with drizzle along the east coast of North America?

Occluded fronts are often associated with a broad band of precipitation

Barometric pressure usually falls with the approach of a(n)____________________ front or ____________________ front.​

What type of air mass would be responsible for hot,muggy summer weather in the eastern half of the United States?