Weather Flashcards

1
Q

TAF stands for

A

Terminal aerodrome forecast

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2
Q

TAF reporting periods and area

A

4 times a day every 6hrs 5sm radius from center of runway complex Valid for 30hrs

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3
Q

FA stands for

A

Area Forecast

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4
Q

FA reporting periods and location

A

3 times a day every 8hrs good for 12hrs for clouds/weather and outlook for an additional 6hrs several states

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5
Q

Winds aloft forecast every

A

4hrs

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6
Q

WA-no wind indication means

A

if airport is within 1500 of altitude

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7
Q

WA-No temp indication means

A

elevation is within 2500 of station

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8
Q

WA- 9900 means

A

Winds variable

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9
Q

WA-negative not indicated on altitudes

A

24000 and above

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10
Q

WA- 100-199knts wind indicated

A

subtract 50 from direction and add 100 to speed

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11
Q

Airmet issued for.. Types.

A

Weather dangerous to light/limited aircraft -Sierra-ifr and mountain obstruction -Tango-moderate turbulence sustained wind surface at 30 or more and nonconvective low level windshear -Zulu-Moderate icing and freezing levels scheduled 4 times a day every 6hrs and unscheduled as neccessary valid for 6hrs

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12
Q

SIGMET issued for..

A

weather potentially dangerous to all airmen and aircraft -severe or greater turbulence -clear air turbulence -sever icing -wide spread dust or san storm -volcanic ash unscheduled but valid for 4 hrs

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13
Q

Convective SIGMET for..

A

-thunderstorms -severe or greater turbulence -severe icing -low level wind shear -tornadoes and large hail which is 3/4 or greater at surface and winds greater than 50 at the surface -heavy precipitation. issued hourly and good for 2hrs

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14
Q

Surface Prognostic Charts issued periods

A

Current and is issued 8times a day

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15
Q

Milibars Standard is

A

1013.2mb

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16
Q

ATIS stands for.. issued periods

A

Automated Terminal Information System 1hour

17
Q

ASOS stands for.. issued periods

A

Automated Surface Observing System Minute by minute

18
Q

AWOS stands for.. issued periods

A

Automated Weather Observing System Minute by minute

19
Q

Winds flow from..

A

High to Low

20
Q

High pressure flow..

A

down and to the right

21
Q

Low pressure flow..

A

up and to the left

22
Q

Coriolis Force deflects air to the.. in the northern hemisphere.

23
Q

Microburst is..

A

most common in thunderstorm. is a severe downdraft up to 6000fpm and most severe low level wind shear type

24
Q

3 stages of thunderstorms

A

-cumulous -mature -dissapating

25
To form a thunderstorm needs..
-lifting action -high humidity -unstable
26
Cloud Categories -low -medium -high -clouds with extensive vertical developement
-stratus sfc-6500agl -alto-6500 to 20000agl -sirius-above 20000agl -towering cumulous,cumulonibus-
27
Avoid thunderstorms by..
20nm
28
Fog is..
cloud within 50ft of surface and happens when temp and dew point are rather close
29
METAR stands for and issued
Aviation routine weather report every hour
30
FOG types: RAIS UP
-radiation -advection -ice -steam -upslope -precipitation