Exam 11: Air Masses and Fronts

Freezing rain more commonly occurs with warm fronts than with cold fronts.

Thunderstorms that have bases at a relatively high level above the surface are called ____________________ storms.​

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.

The only indication on the station model of past weather conditions is the

The word "frontogenesis" on a weather map would mean that

On a weather map, the transition zone between two air masses with sharply contrasting properties is marked by

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

What type of weather front would likely be responsible for the following weather forecast? "Increasing high cloudiness and cold this morning. Clouds increasing and lowering this afternoon with a chance of snow or rain tonight. Precipitation ending tomorrow morning. Turning much warmer. Winds light easterly today becoming southeasterly tonight and southwesterly tomorrow."

A dryline is

Along a dryline, the ____ may drop markedly.

A halo around the Sun or Moon indicates that rain may be on the way because the halo indicates a(n)

What types of weather changes accompany the passage of a dryline (dew point front)?​

​What type of front will most likely pass the area when the weather forecaster states "Light rain and cold today, with temperatures just above freezing. Southeasterly winds shifting to westerly tonight. Turning colder with rain becoming heavy and possibly changing to snow"? (a)

Fronts are associated with high pressure​.

____________________ are not warm fronts or cold fronts, but represent a narrow boundary where there is a steep horizontal change in moisture.​

The "average" speed of a cold front is about half that of an "average" warm front.

Which of the following statements is most plausible?

An elongated area of low pressure is called a(n) ____________________.​

The designation for a cool, moist air mass is

On a colored weather map, a stationary front is drawn as an alternating red and blue line. Red semicircles face toward colder air on the red line and blue triangles point toward warmer air on the blue line.