Download MET403-08.pps

• Transition zone between
different air masses.
COLD
AIR
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WARM
AIR
The leading edge of an advancing cold air mass.
COLD
AIR
SLOPE OF A COLD FRONT
The slope of the front is very steep (1 in 50)
Narrow weather band
Can be very severe
1 MILE
50 MILES
• Clouds and weather
–
–
–
–
clouds of vertical development
showers
winds veer
temperature decreases behind front
Fast moving cold fronts may produce severe
thunderstorms and/or squall lines
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Confirmation Stage
NOTE: You must use the buttons in the Confirmation Stage
Meteorology
Fronts
Let's try a few review questions on Meteorology:
Question #1 -
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The slope of a cold front is
A
Shallow
B
Steep
C
Gradual
D
Vertical
.
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Meteorology
Fronts
Let's try a few review questions on Meteorology:
Question #2 -
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What precipitation can you expect at a cold
front?
A
Showers
B
Steady
C
Mist
D
Continuous
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The trailing edge of a retreating cold air mass
Warm air is forced aloft by “overrunning”
WARM
AIR
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COLD
AIR
Shallow slope (1 in 200)
Wide weather band that may extend up
to 500 miles
Extensive stratiform cloud
1 MILE
150 - 200 MILES
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• Clouds and weather
–
–
–
–
–
–
stratus clouds
steady precipitation
winds veer
temperature rises behind front
thunderstorms may be embedded in the stratus clouds
in winter, ice pellets and freezing rain may develop
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Sequence of clouds indicating the
approach of warm front are:
•
•
•
•
•
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C
C
A
N
S
cirrus
cirrostratus
altostratus
nimbostratus
stratus
TROWAL
A TRough Of Warm air ALoft
• A cold front overtakes a warm front and lifts
the warm air off the ground.
• Clouds and weather
– combination of both warm front and cold front
weather.
Regional Gliding School
Confirmation Stage
NOTE: You must use the buttons in the Confirmation Stage
Regional Gliding School
Meteorology
Fronts
Let's try a few review questions on Meteorology:
Question #3 -
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What does the abbreviation TROWAL stand
for?
A
Transition point between fronts
B
Trough of warm air aloft
C
Shallow slope
D
Occluded Fronts
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Meteorology
Fronts
Let's try a few review questions on Meteorology:
Question #4 -
Regional Gliding School
What does the “A” in CCANS abbreviation
indicate?
A
Alto cumulus
B
Alto stratus
C
Altocumulus Castellanus
D
Cumulus
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Meteorology
Air Masses
Congratulations!!
You have now completed the Front lesson of the Meteorology Module.
Of course, this lesson is always available to you for future reference if
required.
You are now ready to move along to the next Meteorology lesson you
have not completed or to any other module you wish. You can advance
to the Self Test Module if you feel ready to challenge the final exam.
Good Luck!
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