Garmin GI 275 Pilot's Manual page 171

Winds Aloft
Winds Aloft data shows the forecasted wind speed and direction at the surface, and at
selected altitudes. Altitudes can be displayed in 3,000 ft increments up to 42,000 feet MSL.
Winds Aloft are displayed using wind barbs depending on the selected range. The wind
barbs indicate wind speed and direction. The wind streamline indicates wind direction with
arrows.
The wind barbs always point in the direction the wind is coming from. The wind speed is
depicted using flags at the end of the wind barb. A short wind flag is 5 knots, a long wind flag
is 10 knots, and a triangle flag is 50 knots.
Range
Displayed Weather
Altitude Setting
190-02246-01 Rev. L
Winds Aloft -'SXM WX' Page
Wind Barb Symbols
Garmin GI 275 Pilot's Guide
Hazard Avoidance
Wind Barb
149