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Stage 2 Private Pilot License > Weather > Flashcards

Weather Flashcards

You may prefer our related Brainscape-certified flashcards:
Charter Pilot (Part 135) - Oral flashcards
1
Q

What is a METAR

A

Meteorological Areodrome Report

Current/observed weather updated every 50 min. Past the hour

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2
Q

What is Dewpoint

A

Temperature at which air becomes fully saturated

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3
Q

When should you expect to see fog?

A

When temperatures and dewpoint are within 2° Celsius of each other

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4
Q

What is a TAF

A

Terminal Aerodrome Forecast

Valid for 24 hours, updated every 6 hours

Only acceptable to use within 5sm of airport

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5
Q

What should you use if there is no TAF ?

A

Use Aviationweather.gov

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6
Q

What weather information can you obtain from graphical forecast

A

Cloud coverage
Ceilings
Winds
Storms
Etc.

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7
Q

Flight Categories

A

LIFR = LOW INSTRUMENT FLIGHT RULES (magenta)
Ceiling below 500’ AGL, visibility LESS than 1 mile

IFR= INSTRUMENT FLIGHT RULES ( red)
Ceilings 500’ to below 1000’ AGL, visibility 1 - less than 3 miles

MVFR= MARGINAL VISUAL FLIGHT RULES (blue)
Ceilings 1,000’ to 3,000’ AGL, visibility 3 - 5 miles

VFR= VISUAL FLIGHT RULES (green)
Ceilings greater than 3,000’ AGL, visibility greater than 5 miles

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8
Q

When is an Airport Beacon Lit?

A

IFR Weather conditions during daytime or at night

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9
Q

What are winds aloft

A

Forecasted wind speeds and direction at various altitudes

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10
Q

At what altitude are winds aloft assumed negative

A

24,000 MSL

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11
Q

What are characteristics of a high pressure system

A

Clockwise, outwards, and downwards
Poor visibility
Brings higher pressure / density

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12
Q

Characteristics of a low pressure system

A

Counterclockwise, inwards, and upwards
Good visibility
Includes precipitation because of higher humidity

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13
Q

What is a warm front

A

Slow moving, so gradual change
Stratiform clouds
Poor visibility because air is stable and calm
Steady precipitation

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14
Q

What are the characteristics of a cold front

A

Travels more rapidly than warm fronts,
Dense masses of air that remain close to the ground and displace warm air upward over itself.
The ascending air rapidly cools down forming clouds
Typically a formation of Cumulus clouds
Possible rapid development of thunderstorms
Showery precipitation
Eventually good visibility prevails once the cold front dominates the area
Barometric pressure will rise, because cold air is more dense

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15
Q

What is a stationary front

A

When cold and warm front meet and stop movements
Lingers for a long time

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16
Q

What is a occluded front

A

When one front catches up to another front moving in the same direction
Usually a cold front catches up to a slow moving warm front

17
Q

Bravo cloud clearance

A

3sm

Clear of clouds

18
Q

Charlie / Delta cloud clearance

A

[3-152]
3 sm of visibility
1000’ above
500’ below
2000’ horizontally

19
Q

Echo cloud clearance

A

Below 10,000’ MSL [3~152]
3sm vis., 1000’ above, 500’ below, 2000’ horizontally

Above 10,000 MSL [5~111]
5sm vis., 1000’ above, 1000’ below, 1 mile horizontally

20
Q

Golf airspace cloud clearance

A

Below 1200’ AGL
Day = 1sm visibility, clear of clouds
Night = 3sm visibility, 1000’ above, 500’ below, 2000’ horizontally

Above 1200’ AGL
Day = 1sm visibility , 1000’ above, 500’ below, 2000’ horizontally
Night = 3sm, 1000’ above, 500’ below, 2000’ horizontal

21
Q

What are iso bars

A

Pressure measured in millibars
When close together expect higher winds

22
Q

What is a Airmet

A

Airmen’s meteorological Information
Valid for 6 hours
Contains moderate weather conditions

23
Q

What are the 3 Airmet weather designations

A

○ Tango - Turbulence, >30kt winds, Low level wind shear
○ Sierra - IFR conditions, mountain obscurations
○ Zulu - Freezing

24
Q

What are the 3 types of ice

A

Structural Ice

Instrument icing

Induction icing

25
Q

What is a SIGMET

A

Significant Meteorological Information

○ Valid 4 hours
○ Stronger weather phenomena that will affect safety of all aircraft
○ Severe or greater turbulence
○ Dust or sandstorms, Volcanic ash
○ Severe or greater icing

26
Q

What is a Convective SIGMET

A

Sigmet related to convective activity

○ Valid 2 hours
○ Thunderstorms
○ Winds >50 kt winds
○ Hail 3⁄4” diameter or greater
○ Tornadoes

27
Q

What 3 ingredients make a thunderstorm

A

Moisture
Uplifting action
Unstable air

28
Q

What is unstable air

A

Normal temp decreases 2 celsius per 1000’, unstable is 3° per 1000’

29
Q

What are the 3 stages of a thunderstorm

A

■ Cumulus
● Large updrafts
● Clouds are building in form and height

■ Mature
● Both up/downdrafts
● Extreme precipitation
● Lightning

■ Dissipating
● Mostly downdrafts
● Microburst is localized and can reach downdrafts of up to 6000’ a minute
● Storm weakens in intensity

30
Q

What are the 3 types of structural icing

A

Rime
Clear
Mixed

Stage 2 Private Pilot License (9 decks)

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