GFA

Question 1

Synoptic features

Answer 1

When a motion of a synoptic feature is 5 kt or more, it will be indicated by an arrow and a speed value

Question 2

Clouds on GFA

Answer 2

The bases and tops of forecast clouds between the surface and 24,000 feet ASL will be indicated on the GFA clouds and weather chart

Question 3

When are the speed and direction of forecast surface winds indicated by wind Barb’s and wind speed values?

Answer 3

With Sustained speed of 20KT or more, or gusts to 30KT or more

Question 4

Dashed outer line with internal bars that are solid and slanted. Are used to enclose areas of?

Answer 4

Intermittent or showery precipitation

Question 5

A solid outer line with a dotted interior is used to enclose areas of?

Answer 5

Continuous precipitation

Question 6

Obstructions to vision are enclosed with a ————-Line?

Answer 6

Dashed orange line

Question 7

Icing is depicted whenever:

Answer 7

Moderate or severe icing is forecast for the coverage area

Question 8

The bases and tops of each icing layer is measured in:

Answer 8

Hundreds of feet MSL, as well as the type of icing will be indicated

Question 9

Icing. Caution!!!

Answer 9

If icing is expected to be present, during only part of the forecast. Covered by the chart, the time of occurrence of the icing is indicated in the comment box.

Question 10

When is turbulence depicted on a GFA?

Answer 10

Whenever moderate or severe turbulence is forecast for the coverage area. The base and top of each turbulence layer is measured in hundreds of feet ASL.

Question 11

How is the height of freezing level measured above sea level?

Answer 11

With 2500 foot intervals, starting at the surface.

Question 12

What is the GFA automatically amended by?

Answer 12

AIRMET
SIGMET