2. What air mass brings the coldest winter weather to the United States? 3. Why
ID: 160499 • Letter: 2
Question
2. What air mass brings the coldest winter weather to the United States?
3. Why is continental polar air welcome to the Central Planes in summer but not welcome in the winter?
4. List the temperature and moisture characteristics of each of the major air masses.
5. Explain how arctic outbreaks can occur in the southern part of the United States. Where did the arctic air originate, and how is it able to move this far south?
7. Why do air temperatures tend to be a little higher on the eastern side of the Appalachian Mountains than on the western side, even though the same winter continental polar or continental arctic air mass dominates both areas?
8. Explain how the airflow aloft regulates the movement of air masses.
10. The boundaries between neighboring air masses tend to be more distinct during the winter than during the summer. Explain why.
12. What type of air mass would be responsible for the weather conditions listed as follows?
a. Heavy snow showers and low temperatures at Buffalo, NY
b. Hot, muggy summer weather in the Midwest and the East
c. Daily afternoon thunderstorms along the Gulf Coast
d. Heavy snow showers along the western slope of the Rockies
e. Refreshing, cool, dry breezes after a long summer hot spell on the Central Plains
f. Heavy summer rain showers in southern Arizona
g. Drought with record-high temperatures over the desert southwest
h. Persistent cold, damp weather with drizzle along the East Coast
i. Summer afternoon thunderstorms forming along the eastern slopes of the Sierra Nevada
j. Record low temperatures in South Dakota
k. Heavy rain at high elevations along with flooding and mud slides along the west coast of North America
17. How does the weather usually change along a dryline? Since hot, dry air is often located behind (to the west) of a dryline, why are drylines not classified as warm fronts?
18. Based on the following weather forecasts, what type of front will most likely pass the area?
a. 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.
b. Cool today with rain becoming heavy at times by this afternoon. Warmer tomorrow. Winds southeasterly becoming westerly by tomorrow morning.
c. Increasing cloudiness and warm today, with the possibility of thunderstorms by evening. Turning much colder tonight. Winds southwesterly, becoming gusty and shifting to northwesterly by tonight.
d. 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.
20. Why are ice storms more likely to form with a warm front than with a cold front?
Explanation / Answer
2.
Answer: Arctic air mass gives the coldest weather to the United States.
3.
Answer: North winds in makes temperature below “0 degree Fahrenheit”. The north Winds comes with very high winds that make chill factor even lower and if it hits moisture there is heavy snow. But whereas in summer it provides rain and cools the hot southern air.
4.
Answer: Temperature and Moisture are the two basic characters of air mass. There are abbreviated as two letters, the lower case letter is used to symbolize for moisture and capitalized letter symbolized as temperature.
Temperature consistent in layers of vertical and moisture remains fairly consistent.
5.
Answer: Arctic out breaks mainly occurs at the areas of southern part of the United States, due to the change of temperature with high amount in the atmosphere. Across the Canada, the air which is nearer to the ground of southward and into the northern plains and north eastern U.S creating out breaks.
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