Why are winds aloft forecasts called "FDs"?

Question

What does FD stand for?

Thanks.

Answer 1

Forecast Direction

The estimated winds and temperature for selected levels.

Answer 2

"F" is for "Forecast," as in "FA."

I thought "D" was for "winD"--but maybe Get a Grip is right in saying "Direction."

Answer 3

They are not abbreviations of anything.  All weather products were assigned coded letters like that.  FD simply got to be the winds aloft's name.

WS= Sigmets

WA=Airmets

WST=Convective Sigmets

CWA=Center Weather Advisory

WW=Severe Weather Watch Bulletin

You know what a METAR, TAF, and NOTAM are.

Answer 4

Winds aloft forecast are designated by either "FD or "FB"

These reports are  known as "FD" in the US, but are becoming known as "FB", following the World Meteorological Organization (WMO) nomenclature.

simply put ,it is the product code for the textual winds aloft forecast.

http://www.weather.gov/tg/headef.html