3D Connexion GNS 530(A) manual Winds, Wind Speed, Blank Unknown

SECTION 14

ADDITIONAL FEATURES

Winds

Wind Vector - The wind vector indicates the direction of the surface wind to the nearest 30˚ increment (e.g. 30˚, 60˚, 90˚, 120˚, etc.).

Wind Speed - In general, the sum of the wind barbs (see Table 14-13) is the sustained surface wind speed.

Wind Speed

	(Blank)		Unknown
		Short Barb	5 kts
		Long Barb	10 kts
			≥ 37 kts
	Table 14-13 Wind Speed Graphics
		Gust Offset
(Blank)	Gusts are unknown or < 5 kts above
		sustained wind speed.
G10	Wind is gusting 5 - 10 kts more than
(Green)		sustained speed.
G11+	Wind is gusting 11 kts or more above its
(Yellow)		sustained speed.

Table 14-14 Gust Offset Graphics

To interpret wind speed, add the values of each of the wind speed barbs. In Figure 14-37, there are two long barbs (10 knots each) and one short barb (5 knots each). Thus, the total wind speed is 25 knots. Adding the gust offset to this figure gives winds gusting to 36 knots. Thus, the symbol in Figure 14-37 indicates the surface wind at KFRM is coming from a direction of 300° at a speed of 25 knots, gusting to 36 knots or greater. The data age is 11-20 minutes old.

Gust Offset Wind Speed

Wind Vector

Data Age

Figure 14-37 Wind Symbol

14-30 GNS 530(A) Pilot’s Guide and Reference 190-00181-00 Rev. E