What do all the numbers on this wind chart mean?

Question

http://i213.photobucket.com/albums/cc115/PilotFerdi/fr.jpg

Answer 1

those are temperatures in celcius. the minus sign is not printed because it's redundant.

Answer 2

temp

Answer 3

Cherokee is right.

Those are temperature indications.  The direction and speed of the winds are indicated by the flags.  The numbers correspond to the temperature.  Because this is above FL240 (in this case it is published at FL390) these are all temperatures that are below zero degrees Celsius.  the - is deleted because it is redundant...all temperatures that high are negative.

Answer 4

Wind speed, direction and temperature at 39,000 feet (FL390). A "pennant" = 50 knots, a long "tick mark" = 10 knots, and a short one = 5 knots. The entire symbol shows where the wind is coming from. For example, over central  Spain the wind is southwest at 60 knots  and the temperature is -63 degrees C. Off the coast of Ireland the wind is northwest at 55 knots and the temp is -54 degrees C. The highest wind speed on that chart is 110 knots over central Europe.

Answer 5

That indicates wind direction as well as speed. It also tells you what altitude the winds are at.