Weather Whiz

Question 1

Define GFA

Answer 1

Graphic Area Forecast

Usually issued every 6hrs, for AC operating within 1000NM and below 240.

Question 2

SIGMET

Answer 2

Significant Meteorological Phenomen

Significant weather that WAS already inlcuded in the GFA

Question 3

AIRMET

Answer 3

Significant weather that was not previously included in the GFA.

Question 4

TAF

Answer 4

The Aerodrome Forecast
Intended to relate to weather conditions within 6SM (5NM) of the runway.

Question 5

How many hourly obs are required for a TAF to be made?

Answer 5

Two consecutive

Question 6

ABV VC

Answer 6

Vicinity

Question 7

ABV MI

Answer 7

Shallow

Question 8

ABV BC

Answer 8

Patches

Question 9

ABV PR

Answer 9

Partial (covering part of the aerodrome)

Question 10

ABV GR

Answer 10

Hail (larger)

Question 11

ABV GS

Answer 11

Hail (small) or snow pellets

Question 12

Two types of GFA

Answer 12

-Clouds and weather
-Icing, turbulence, and freezing level.

Question 13

GFA symbol that Looks like a capital R with an arrow on the tail

Answer 13

TS

Question 14

GFA symbol that is a triangle with a dot in the middle of it.

Answer 14

Ice pellets

Question 15

.~

Answer 15

Freezing Rain

Question 16

,~

Answer 16

Freezing Drizzle

Question 17

)=

Answer 17

Moderate Icing

Question 18

) with 3 lines

Answer 18

Severe Icing

Question 19

^

Answer 19

Moderate Turbulence

Question 20

^ with two ^

Answer 20

Severe Turbulence

Question 21

ISOL

Answer 21

Isolated (25% or less of the area)

Question 22

STNR

Answer 22

Stationary (moving at a speed of less than 5kts)

Question 23

OCNL

Answer 23

Occasional (25-50% of the area)

Question 24

FREQ

Answer 24

Frequent (Greater than 50%)

Question 25

LCA

Answer 25

Local (Less than 25% of an area)

Question 26

PTCHY

Answer 26

Patchy (25-50% of an area)

Question 27

Xtnsv

Answer 27

Extensive (Greater than 50%)

Question 28

Light Icing

Answer 28

Ice accretion is such that flying for more than one hour without deicer may create a problem

Question 29

Moderate Icing

Answer 29

Ice accretion is such that flying for even a short amount of time without deicer can be hazardous. Deicer or a diversion are necessary

Question 30

Severe Icing

Answer 30

Ice accretion is such that deicer wont mitigate the problem. a diversion is necessary.

Question 31

What are the 5 types of turbulence?

Answer 31

-CAT -Mech -MTW -L LVL JET -L LVL WS

Question 32

Light Turbulence

Answer 32

Such turbulence momentarily causes slight, erratic changes to the altitude or attitude of the AC.

Question 33

Moderate Turbulence

Answer 33

Similar to light, but more frequent. The AC is always in positive control.

Question 34

Severe Turbulence

Answer 34

Such turbulence causes large, abrupt changes in altitude or attitude of an AC.

Question 35

CAT

Answer 35

Clear Air Turbulence: Turbulence in the absence of clouds. Caused when masses of differently moving air meet.

Question 36

Mech

Answer 36

Mechanical Turbulence: Caused by friction between the air and ground, over uneven land masses or man made structures.

Question 37

MTW

Answer 37

Lee waves (Mountain Waves): Caused by stationary waves on the sheltered side of a mountain.

Question 38

LLWS

Answer 38

Low Level Wind Shear: When there are significant differences in wind in a small vertical distance. A wind shear of 10 knots or more per 100 feet in a layer more than 200 feet thick which occurs within 2,000 feet of the surface

Question 39

L LVL Jet

Answer 39

Turbulence caused by high speed winds (jet streams) in low levels of the atmosphere. Included in GFA when 50kts or more.

Question 40

Which way does wind travel around a L pressure system?

Answer 40

Counter clock-wise

Question 41

Which way does wind travel around a H pressure system?

Answer 41

Clock-wise

Question 42

How is the area of the GFA applicable to you identified?

Answer 42

It is within a scalloped, red border, indicating the layer of cloud affecting the area.

Question 43

How is obstruction to vision shown on GFA?

Answer 43

Orange, hyphenated border

Question 44

Continuous precip on GFA

Answer 44

Green border with dots inside

Question 45

Intermittent precip on GFA

Answer 45

Hyphenated green border with lines inside

Question 46

Continuous freezing precip on GFA

Answer 46

Red border with dots inside

Question 47

Intermittent freezing precip on GFA

Answer 47

Red, hyphenated border with lines inside.

Question 48

Moderate Icing on GFA

Answer 48

Blue border with fewer dots

Question 49

Severe Icing on GFA

Answer 49

Blue border with more dots

Question 50

Moderate LLVL turbulence on GFA

Answer 50

Red border with fewer lines going from right to left.

Question 51

Severe LLVL turbulence on GFA

Answer 51

Red border with more lines going from left to right

Question 52

Moderate HLVL turbulence on GFA

Answer 52

Red border with fewer lines going from right to left.

Question 53

Severe HLVL turbulence on GFA

Answer 53

Red border with more lines going from right to left.

Question 54

Freezing level on GFA

Answer 54

Represented by a hyphenated black line.