56
User can change to wind direction shown in 360 degrees.
Press and hold [ WIND ] key for 2 seconds until the wind direction is ashing. Press [
/ INDEX ] or [ /
MODE ] key to select the display format between 16-point direction and 360 degrees.
4.3.8.4 BEAUFORT SCALE TABLE
The Beaufort scale is an international scale of wind velocities ranging from 0 (calm) to 12 (Hurricane force).
Beaufort Scale Description Wind Speed Land Condition
0 Calm
< 1 km/h
Calm. Smoke rises vertically.
< 1 mph
< 1 knots
< 0.3 m/s
1 Light air
1.1 ~ 5km/h
Smoke drift indicates wind direction.
Leaves and wind vanes are stationary.
1 ~ 3 mph
1 ~ 3 knots
0.3 ~ 1.5 m/s
2 Light breeze
6 ~ 11 km/h
Wind felt on exposed skin. Leaves rustle.
Wind vanes begin to move.
4 ~ 7 mph
4 ~ 6 knots
1.6 ~ 3.3 m/s
3 Gentle breeze
12 ~ 19 km/h
Leaves and small twigs constantly moving,
light ags extended.
8 ~ 12 mph
7 ~ 10 knots
3.4 ~ 5.4 m/s
4
Moderate
breeze
20 ~ 28 km/h
Dust and loose paper raised. Small
branches begin to move.
13 ~ 17 mph
11 ~ 16 knots
5.5 ~ 7.9 m/s
5 Fresh breeze
29 ~ 38 km/h
Branches of a moderate size move.
Small trees in leaf begin to sway.
18 ~ 24 mph
17 ~ 21 knots
8.0 ~ 10.7 m/s
6 Strong breeze
39 ~ 49 km/h
Large branches in motion. Whistling heard
in overhead wires. Umbrella use becomes
dicult. Empty plastic bins tip over.
25 ~ 30 mph
22 ~ 27 knots
10.8 ~ 13.8 m/s
7 High wind
50 ~ 61 km/h
Whole trees in motion. Eort needed to
walk against the wind.
31 ~ 38 mph
28 ~ 33 knots
13.9 ~ 17.1 m/s
To Next Page
Loading...
