Garmin GXM 30A - Manual (Page 18)

 GXM 30A XM Radio Smart Antenna Owner’s Manual
Surface Winds
Marine and Automotive units shows Surface Winds with a wind barb. The wind barb is a circle with a tail. The circle points into the
wind. Wind speed is indicated by the different combination of flags that are attached to the tail.
Wind Direction
Calm
5 knots
10 knots
15 knots
20 knots
50 knots
Surface Winds
XM W
eather
f
eatures
> s
urface
W
Inds