SIGWX

Question 1

Flight Level coverage for SIGWX High charts

Answer 1

FL250 to FL600

Question 2

Flight Level coverage for SIGWX Medium Charts

Answer 2

FL100 to FL250

Question 3

Jet stream information appears on a SIGWX chart when the jet core equals or exceeds what speed?

Answer 3

80Kts

Question 4

In this jet stream what does the 220/400 Mean?

Answer 4

When max wind speed is 120kt or more, the flight levels between which the winds are greater than 80 are included.

In this example, winds are greater than 80kt between FL220 and FL400

Question 5

What does the symbol in the centre of the jet stream indicate?

Answer 5

This symbol is used whenever the height of the jet axis changes by +/- 3,000ft or the speed changes by +/- 20kt

Question 6

What speed does a Pennant correspond to?

Answer 6

50Kt

Question 7

What speed does a feather correspond to?

Answer 7

10Kt

Question 8

What speed does a half-feather correspond to?

Answer 8

5Kt

Question 9

Answer 9

Cyclone

Question 10

Answer 10

Moderate Turbulence

Question 11

Answer 11

Severe Turbulence

Question 12

Answer 12

Moderate Icing

Question 13

Answer 13

Severe Icing

Question 14

Answer 14

Volcanic Eruption

Question 15

Answer 15

Cold Front

Question 16

Answer 16

Warm Front

Question 17

Answer 17

Occluded front

Question 18

Answer 18

Stationary front

Question 19

Answer 19

Area of significant weather

Question 20

Answer 20

Area of turbulence

Question 21

Answer 21

Radioactive materials in the atmosphere

Question 22

Answer 22

Freezing Level and its flight level

Question 23

Answer 23

Tropopause high and its flight level

Question 24

Answer 24

Tropopause low and its flight level

Question 25

Answer 25

Tropopause flight level

Question 26

Answer 26

Tropopause contours