GFAs Flashcards
GFAs describe most probable weather for an area between the surface and _____ft.
24 000 ft
GFAs consists of two charts, what are they?
Clouds and weather chart
Icing, turbulence and freezing level chart.
True or False?
GFAs are issued 4 times per day, with 3 forecast times per issue and there are 2 charts per time.
True
True or False?
Convective clouds such as CU, TCU, ACC and CB will always be stated.
True
Obstructions to vision are mentioned when the visibility is ___SM or less.
6
Referring to the clouds and weather chart, what does a continuous green border indicate?
Enclosed areas of continuous precipitation.
Referring to the clouds and weather chart, what does a dashed red border line mean?
Enclosed areas of intermittent freezing precipitation.
True or false?
Convective weather abbreviations:
ISOLD = Less or equal to 25% coverage
OCNL = Between 26 and 50% coverage
FRQ = Greater than 50% coverage
True
Describe the symbols for enclosed areas of moderate and severe icing.
Moderate: Continuous blue border with light stippling.
Severe: Continuous blue border with dense stippling.
Continuous red border line with dense light positive cross-hatching describes what?
Enclosed areas of low level turbulence
A continuous red border line with dense negative cross-hatching describes what?
Enclosed areas of severe high level turbulence
What appears in the title box of a GFA if there is a correction?
CCA, CCB etc..
What automatically amends a GFA?
AIRMET or SIGMET
Which short term weather advisory is for greater hazards?
SIGMET
WA and WS at the beginning of a short term weather advisory signify what?
AIRMET and SIGMET, respectively
