Weather Flashcards

1
Q

Low to high

A

look to the sky (holding an altitude will actually take you up)

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2
Q

High to low

A

look out below (opposite)

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3
Q

Standard lapse (<36,000 MSL)

A

1000ft = 1” hg = 2 degrees C

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4
Q

low pressure (warm) aka

A

cyclone (ccw rotation)

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5
Q

high pressure (cold) aka

A

anticyclone (cw rotation)

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6
Q

trophosphere altitude

A

<36,000 msl

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7
Q

Standard day temperature

A

59f (15c)

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8
Q

Standard day pressure

A

29.92” hg

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9
Q

Dewpoint & temperature converge at

A

4.4 degress F per 1,000 feet.

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10
Q

Wind shear risk

A

winds 25kts+ In (1) temperature inversions, (2) frontal zones, or (3) clear air turbulence

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11
Q

Weather code (RXX/XXXFT)

A

Runway visual range

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12
Q

Weather code (TS)

A

Thunderstorms

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13
Q

Weather code (SH)

A

Showers

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14
Q

Weather code (RA)

A

Rain

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15
Q

Weather code (SQ)

A

Squall

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16
Q

Weather code (SLP)

A

sea level pressure

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17
Q

Weather code (A)

18
Q

Weather code (BCMG XXXX)

A

Gradual change between XX and XX zulu

19
Q

Weather code (NSW)

A

No significant weather

20
Q

Weather code (CB)

21
Q

Weather code (PROBXX)

A

Probability XX of occurrence

22
Q

Weather code (Winds Aloft Over 100kts)

A

subtract 50 from direction, add 100 to velocity

23
Q

Weather code (9900)

A

light/variable wind

24
Q

Weather code for temperatures above 24,000

A

Always negative, so the sign is omitted

25
Report coded UA
Pirep
26
Report coded FD
Winds & temperatures aloft
27
Report coded AC
Convective outlook
28
Report coded AIRMET
Weather of [moderate] interest to all aircraft. Sierra
29
Report coded SIGMET
Weather of significant interest in a region
30
Wind Coriolis deflection (northern hemisphere)
right
31
Wind sea breeze
pulls cool air in (day), Land breeze pushes it back at night
32
Wind valley breeze
pulls cool air toward the mountain (day), Mountain breeze pushes it back at night
33
Wind Snow covered mountains
can cool and push air down even during the day
34
Wind Air flowing over a mountain
will decompress and therefore produce a warm downslope
35
Wind in tropical air
Warm/Moist, Unstable
36
Wind in polar air
Cool/Dry, Stable air
37
Automated weather (Most basic)
AWOS-A through AWOS-3
38
Automated weather (Next level)
ASOS AO1/AO2 and AWSS (available in most places)
39
When calling FSS, State:
Qualifications (e.g. Pilot), VFR/IFR, N-number, Aircraft type, Departure place/time, Altitude, Route/Time enroute, Destination. Outlook/Standard/Abbreviated.
40
Decoding Winds/Temperatures Aloft
2 digit true wind direction, 2 digit speed, temperature after +/- sign (above 24, it's always negative)