Frontal Mechanics Flashcards
What properties are used to locate and classify fronts?
Temperature, dew point, pressure, wind
What parameters of an air mass are generally uniform when measured across a horizontal plane?
Temperature and moisture
How will the winds shift during a cold front passage?
SW to NW
Squall lines generally develop where?
50 - 300 miles ahead of the cold front
How far ahead of a warm front can the associated cloud system reach?
500 to 700 miles
When encountering a stationary front, you can expect a ______° wind shift since surface winds tend to blow parallel on both sides of the front.
180
When flying through an occluded front, you can expect weather associated with ______ fronts.
Both cold and warm
The most severe weather with respect to an occluded front is generally located ______ NM south to ______ NM north of the frontal intersection.
100; 300
A(n) ______ front usually has no clouds or precipitation.
Inactive
The area that encompasses the weather located on either side of a front is called the ______.
Frontal zone
Every front is located in a _______.
Low-pressure trough
What kind of frontal system is depicted by the purple symbols in a graphic?
Occluded front
Which frontal system has a steeper slope?
A cold front
A line of violent thunderstorms that forms ahead of a cold front are known as ______.
Squall line
How does the wind normally shift with the passage of a warm front?
SE to SW
