Developed in 1805 by Sir Francis Beaufort of England ... Wind felt on face, leaves rustle, vanes begin to move ... Whole trees moving, resistance felt walking against wind...
www.spc.noaa.gov/faq/tornado/beaufort.html www.spc.noaa.gov/faq/tornado/beaufort.html
Beaufort scale - Wikipedia, the free encyclopedia
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The Beaufort scale (pronounced /ˈboʊfərt/ ) is an empirical measure for describing wind speed based mainly on observed sea conditions. Its full name is the Beaufort wind force scale . The sc...
en.wikipedia.org/wiki/Beaufort_scale
Beaufort number; (force) Wind Speed Wave height; (feet) WMO* description Effects observed on the sea Effects observed on land ... Devised by British Rear-Admiral, Sir Francis Beaufort in 1805 based on observations of the effects of the wind ... Fujita Scale of Tornado Intensity...
www.stormfax.com/beaufort.htm www.stormfax.com/beaufort.htm
Beaufort Number or Force ... Wind Speed ... F-Scale / Intensity Phrase...
www.marinewaypoints.com/marine/wind.shtml www.marinewaypoints.com/marine/wind.shtml
Whole trees moving, resistance felt walking against wind ... Appearance of Wind Effects ... Wind felt on face, leaves rustle, vanes begin to move...
www.cs.rice.edu/~jnavarro/windsurfing/beaufort.html www.cs.rice.edu/~jnavarro/windsurfing/beaufort.html
5-7 Light breeze Small wavelets (0.2 m). Crests have a glassy appearance. Wind felt on face. ... 39-46 Gale Moderately high waves (5.5 m), crests break into spindrift. Difficult to walk against wind. Twigs and small branches blown off trees.
www.unc.edu/~rowlett/units/scales/beaufort.html www.unc.edu/~rowlett/units/scales/beaufort.html
Beaufort wind scale #1 ... You can use a flag and the Beaufort wind scale below to find out how fast wind is moving. ... a printed copy of "Beaufort wind scale #1", below...
www.miamisci.org/hurricane/windscale.html www.miamisci.org/hurricane/windscale.html
PLEASE NOTE: "Beaufort scale numbers and descriptive terms such as 'near gale', 'strong gale' and 'violent storm' are not normally used in Bureau of Meteorology communications or forecasts". ... Wind felt on face; leaves rustle; ordinary vanes moved by wind.
www.bom.gov.au/lam/glossary/beaufort.shtml www.bom.gov.au/lam/glossary/beaufort.shtml
The Beaufort Wind Scale ... The Beaufort Scale, used throughout the marine world, has developed over many years since it was first devised by Admiral Francis Beaufort in 1806. Today, the Beaufort scale is defined for seamen in terms of sea state.
www.r-p-r.co.uk/beaufort.htm www.r-p-r.co.uk/beaufort.htm