What is true about air masses?
It has uniform temperature conditions derived from its source region
An mT air mass is likely to be _____ than a cT air mass because the mT air mass _____.
wetter; forms over the ocean
Which air mass combination would typically form over northern Canada?
cP
Which of the following is always the result at boundaries of two different air masses?
frontal uplift
Following what time of the year do midlatitude cyclones begin to form?
Summer Solstice
The Rossby waves play an important role in?
allowing warm air and cold air to meet along the polar front.
On the diagram of Rossby waves below, where would you expect to find a surface storm?
on the upslope of first part of the wave
Occlusions develop when?
a cold front catches up with a warm front
The gust front forms because of?
vigorous downdrafts in the thunderstorm
Mesocyclones are normally associated with?
supercell tornadoes
Tornadoes are ranked in terms of wind speed and related property damage using the?
Fujita scale
The peak tornado season in the continental U.S. is?
April through July
Which of the following conditions would not support the growth of a tropical cyclone?
abundant lifting
temperatures above 80 degrees Fahrenheit
** Low pressure in the upper atmosphere
high evaporation rates
An easterly wave would be found?
in the tropics before a hurricane forms.
Which of the following is the name of a tropical storm that emerges in the Indian Ocean?
cyclone
Where do midlatitude wave cyclones form?
Along the unstable boundary between warm and cold air
Which one of the following choices is accurate about a warm front?
It's the leading edge of an advancing warm air mass.
What happens to warm air in the center of a midlatitude wave cyclone?
It gets pinched and elevated by the advancing cold front.
What is an occluded front?
It's the atmospheric feature that forms when the intrusion of warm air stops in a midlatitude wave cyclone
Which one of the following choices is correct about midlatitude wave cyclones?
They spin counterclockwise in the northern hemisphere
What is the typical path of a strong midlatitude cyclone affecting the East Coast of the United States?
From the Northcentral US, southeast through the Southcentral US, then northeast along East Coast
As the cyclone proceeds through the southcentral US toward the East Coast, what is the moisture source for the cyclone?
Gulf of Mexico
The cold front associated with the cyclone extends in which direction from the cyclone's center?
South
What causes the ultimate downfall of our midlatitude cyclone?
Dry air is pulled into the core of the cyclone by its strong winds