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4.3.8.3 WIND DIRECTION IN 16-POINT DIRECTIONS AND DEGREES
By default, wind direction is displayed by a 16-point compass, which include N, E, S, W, NE,
NW, SE, SW, NNE, ENE, SSE, ESE, NNW, WNW, SSW, WSW.
User can change to wind direction shown in 360 degrees.
Press and hold
[ WIND ]
key for 2 seconds until the wind direction is flashing. Press
[ / MODE ]
or
[ / INDEX ]
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 flags 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
difficult. 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. Effort needed to
walk against the wind.
31 ~ 38 mph
28 ~ 33 knots
13.9 ~ 17.1 m/s
