Airo X Series - Wind Speed According to BEAUFORT SCALE

Use and Maintenance Manual – Series X – XS E RESTYLING
Page 45
3.3.4 Wind speed according to BEAUFORT SCALE
You can use the table below for a simple assessment of the wind speed. We remember that the max. limit for each machine model
is indicated in the table TECHNICAL FEATURES OF STANDARD MACHINES.
The machines for which the max. wind limit is 0 m/s must be used indoors only. These machines
cannot be used outdoors even with no wind.
Beaufort
Number
Wind
speed
(km/h)
Wind
speed
(m/s)
Description
Sea conditions
Land conditions
0
0
<0.28
Calm
Flat
Calm. Smoke rises
vertically.
1
1-6
0.28–1.7
Light air
Ripples without crests.
Wind motion visible in
smoke.
2
7-11
1.7–3
Light Breeze
Small wavelets. Crests of glassy
appearance, not breaking.
Wind felt on exposed skin.
Leaves rustle.
3
12-19
3–5.3
Gentle breeze
Large wavelets. Crests begin to break;
scattered whitecaps.
Leaves and smaller twigs
in constant motion.
4
20-29
5.3–8
Moderate
breeze
Small waves.
Dust and loose paper
raised. Small branches
begin to move.
5
30-39
8.3-10.8
Fresh breeze
Moderate (1.2 m) longer waves. Some foam
and spray.
Smaller trees sway.
6
40-50
10.8-13.9
Strong breeze
Large waves with foam crests and some
spray.
Large branches in motion.
Whistling heard in
overhead wires. Umbrella
use becomes difficult.
7
51-62
13.9-17.2
Near gale /
moderate gale
Sea heaps up and foam begins to streak.
Whole trees in motion.
Effort needed to walk
against the wind.
8
63-75
17.2-20.9
Fresh gale
Moderately high waves with breaking crests
forming spindrift. Streaks of foam.
Twigs broken from trees.
Cars veer on road.
9
76-87
20.9-24.2
Strong gale
High waves (6-7 m) with dense foam. Wave
crests start to roll over. Considerable spray.
Larger branches break off
trees,
construction/temporary
signs and barricades
blown over, damage to
circus tents and canopies.
10
88-102
24.2-28.4
Whole gale /
Storm
Very high waves. The sea surface is white
and there is considerable tumbling. Visibility
is reduced.
Trees broken off or
uprooted, saplings bent
and/or deformed, poorly
attached asphalt shingles
and shingles in poor
condition peel off roofs.
11
103-117
28.4-32.5
Violent storm
Exceptionally high waves.
Widespread vegetation
damage, minor damage to
most roof
shingles/surfaces, gravel
may be blown from flat
roofs.
12
>117
>32.5
Hurricane
Huge waves. Air filled with foam and spray.
Sea completely white with driving spray.
Visibility greatly reduced.
Considerable and
widespread damage to
vegetation, a few windows
broken, structural damage
to mobile homes and
poorly constructed sheds
and barns.