Garmin GXM 40 - Manual (Page 17)

GXM 40 Owner’s Manual 
XM WX Weather Features
Surface Winds
Marine and automotive units show surface winds. The barb attached to the circle points in the direction of the wind. Wind
speed is indicated by different flags attached to the barb.
Wind Direction
Calm
5 knots
10 knots
15 knots
20 knots
50 knots
Surface Winds
Wind Direction
Calm
5 knots
10 knots
15 knots
20 knots
50 knots
Surface Winds