Mechanical effects that make it difficult to walk and thermal effects that make a place chillier than it would otherwise be, will be considered. Speeds shown are averages only and may be exceeded by gusts. As winds are usually very gusty between buildings, some of the effects will occur at Beaufort numbers lower than those stated. Difficulties with gusty winds similar to those experienced by pedestrians near the base of tall buildings have been studied in Australia. No noticeable wind.
Smoke rises nearly vertically.
2 4-7 Wind felt on face, leaves rustle. Hair is disturbed, clothing flaps. 4 13-18 Dust and loose paper raised, hair disarranged. 5 19-24 Force of wind felt on body. Limit of agreeable wind on land.