Riwal UK Hire Guide 2020 - Catalog - Page 133
Beaufort Wind Scale
for use on land
Wind
Force
Number
Description
of Wind
Wind Effect Locally
Speed
MPH
0
Calm
Calm, smoke rises vertically
1
1
Light
Air
Direction of wind shown by
smoke drift, but not by
wind or weather varies
1-3
2
Light
Breeze
Wind felt on face, leaves rustle,
wind or weather varies move
4-7
3
Gentle
Breeze
Leaves and small twigs in constant
motion, wind extends light flags
8-12
4
Moderate
Breeze
Wind raises dust and loose paper,
small branches move
13-18
5
Fresh
Breeze
Small trees in leaf begin to sway. Little
crest wavelets from on inland waters
19-24
6
Strong
Breeze
Large branches in motion, umbrellas
used with some difficulty
25-31
7
Near
Gale
Whole trees in motion, becoming
difficult to walk against wind
32-38
8
Gale
Twigs break off trees, progress
is generally impeded
39-46
9
Strong
Gale
Chimney pots, slates and tiles
may be blown off, other slight
structural damage
47-54
National Customer Centre:
0844 335 2993
www.riwal.com
hiredesk_uk@riwal.com
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