GFA VERIFIED STUDY GUIDE
What Is A GFA - Answers - A group of graphical charts forecasting most likley weather
conditions below 24000 feet
Issue And Valid Times - Answers - - 4 Times daily
- Issued ~30 minutes before validity time
- Valid at 0000z, 0600z, 1200z, 1800z
- Consists of 6 charts (3 clouds and weather) (3 icing, turbulence, and freezing level)
- 2 charts are valid 6 hours into the forecast period
- 2 charts are valid 12 hours into the forecast period
- 3rd clouds and weather chart will always have 12 hour IFR outlook in the comments
Motion In-between Validity Periods - Answers - 5kts over 6 hours is 30nm
Units - Answers - Speed- Knots
Height- Hundreds of feet ASL (unless otherwise stated)
Visibility- Statute Miles
Time- UTC (Zulu)
4 Parts Of GFA - Answers - - Title Box (Top Right)
- Legend (Below Title Box)
- Comments Box (Below Legend)
- Weather Info (Map)
GFA Stands For - Answers - Graphical Area Forecast
Title Box Includes - Answers - - Chart name
- Issuing office
- Name of the region
- Chart type
- Issue time
- Validity time
Legend Includes - Answers - - Weather symbols
- Nm scale bar
Comments Box Includes - Answers - - Weather deemed important by the forecaster
- Description of weather that would otherwise be difficult to show graphically
- 3rd clouds and weather chart includes the 12hr IFR outlook
IFR Outlook - Answers - - Only IFR conditions included in outlook
- MVFR and VFR are for reference only
- If no IFR conditions are forecast you will see "NIL SIG WX"
What Is A GFA - Answers - A group of graphical charts forecasting most likley weather
conditions below 24000 feet
Issue And Valid Times - Answers - - 4 Times daily
- Issued ~30 minutes before validity time
- Valid at 0000z, 0600z, 1200z, 1800z
- Consists of 6 charts (3 clouds and weather) (3 icing, turbulence, and freezing level)
- 2 charts are valid 6 hours into the forecast period
- 2 charts are valid 12 hours into the forecast period
- 3rd clouds and weather chart will always have 12 hour IFR outlook in the comments
Motion In-between Validity Periods - Answers - 5kts over 6 hours is 30nm
Units - Answers - Speed- Knots
Height- Hundreds of feet ASL (unless otherwise stated)
Visibility- Statute Miles
Time- UTC (Zulu)
4 Parts Of GFA - Answers - - Title Box (Top Right)
- Legend (Below Title Box)
- Comments Box (Below Legend)
- Weather Info (Map)
GFA Stands For - Answers - Graphical Area Forecast
Title Box Includes - Answers - - Chart name
- Issuing office
- Name of the region
- Chart type
- Issue time
- Validity time
Legend Includes - Answers - - Weather symbols
- Nm scale bar
Comments Box Includes - Answers - - Weather deemed important by the forecaster
- Description of weather that would otherwise be difficult to show graphically
- 3rd clouds and weather chart includes the 12hr IFR outlook
IFR Outlook - Answers - - Only IFR conditions included in outlook
- MVFR and VFR are for reference only
- If no IFR conditions are forecast you will see "NIL SIG WX"
