Table of Contents
Are winds aloft true?
Winds Aloft are reported in true headings. The FAA’s Student Pilot VFR Navigational Planning courses says: “Winds aloft are provided at specific reporting stations for various altitudes in the FD or winds aloft weather product.
Are winds aloft in Foreflight true or magnetic?
On the Airports page and in the NavLog in the Flights tab where the wind Dir/Speed is given, winds aloft are displayed as true north.
What does 9999 mean on winds aloft?
When the term “light and variable” is used in reference to a winds aloft forecast, the coded group and wind speed is. A. 9999 and less than 10 knots. B. 9900 and less than five knots.
Are winds given in true or magnetic?
Remember that these winds directions are given in relation to true north, not magnetic north. Wind aloft reports generally do not report wind conditions close to the surface, for example at the airports of departure or arrival. For this information, the Airport METAR is the best source.
Are upper winds in true or magnetic?
The general rule is: If you read it, it’s true. If you hear it, it’s magnetic. All charts and textual sources (METAR, TAF, winds aloft, surface analysis charts, etc) use true north as the reference.
Are Winds given in true or magnetic?
What does 9999 mean in TAF?
9999. This value represents a visibility greater than 9000. meters (7 SM or more). The contraction CAVOK (ceiling and visibility OK) may be used when there is no significant weather, the visibility is 10 km or greater, and the ceilings are greater than 5,000 ft.
What does the term winds aloft mean?
winds and temperatures aloft forecast
Winds aloft, officially known as the winds and temperatures aloft forecast, (known as “FD” in the US and Canada, but becoming known as “FB”, following the World Meteorological Organization [WMO] nomenclature), is a forecast of specific atmospheric conditions in terms of wind and temperature at certain altitudes.
How do you read a wind report?
Wind direction is usually reported in cardinal (or compass) direction, or in degrees. Consequently, a wind blowing from the north has a wind direction referred to as 0° (360°); a wind blowing from the east has a wind direction referred to as 90°, etc.