The beaufort scale of wind force, internationally employed by weather agencies, was not designed for use. Wind data can be expressed in a number of ways, including scales, such as the beaufort scale, and more commonly as wind speeds that use a variety of units e. Heavy flag extends fully and flaps only at the end. Beaufort wind force scale poster this poster cites the official description of each wind force, but goes beyond that to show how it impacts both land and sea. Necessary to lean slightly into the wind to maintain balance.
Beaufort wind scale one of the first scales to estimate wind speeds and the effects was created by britains admiral sir francis beaufort 17741857. Beaufort wind scale in miles per hour mph, knots and. Beaufort wind scale beaufort wind scale the beaufort. Meaning, pronunciation, translations and examples log in dictionary.
One of the first scales to estimate wind speeds and the effects was created by britains. Sea heaps up and white foam from breaking waves begins to be blown in streaks along the direction of wind. Beaufort scale definition and meaning collins english. Beaufort wind scale the beaufort wind scale is a historical wind speed classification developed for use by. Beaufort wind chart estimating winds speeds beaufort mph number range average terminology description 0 0 0 calm calm. Photographs of the sea in wind forces 012 mounted on one card and varnished are published by h. If you have trouble viewing linked files, obtain a free viewer for the file format. Reference is made to table 21 bf number beaufort number as defined by the beaufort wind scale brake power, pb is the mcr brake power available in dp modebollard pull, i. This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. Pdfdateien mit adobe acrobat pro optimieren adobe support. View notes beaufort wind scale from npre 475 at university of illinois, urbana champaign.
If the file has been modified from its original state, some details may not fully reflect the modified file. Beaufort wind scale in miles per hour mph, knots and kilometers per hour kmh beaufort scale force wind in mph wind in knots wind in kmh description wave heightsvisible condition force 0 0 1 01 01 calm. A north east wind blowing from the ne varying between 10 knots of less, becoming 7 16 knots rotating anticlockwise to a northerly blowing from the north 17 27 knots. Pdfreader, pdfviewer kostenlos adobe acrobat reader dc. National weather service tampa florida is your best source for complete weather forecast and weather related information on the web for the tampa bay area. Higher pitched moaning and whistling heard from rigging. If the file has been modified from its original state, some details may not fully reflect the. Beaufort scale of wind force as adapted for use on forested areas of. Francis beaufort devised his scale of wind force in 1805, when serving aboard hms woolwich, and first mentioned it in his private log on january 1806, stating that he would, hereafter estimate the force of the wind according to the following scale. He developed the scale in 1805 to help sailors estimate the winds via visual observations. A guide that helps mariners to estimate the wind speed over open water based on the. Beaufort scale force equivalent speed description specifications for use on land 10 m above ground mph kts 0 01 01 calm calm wind.
699 1417 1419 1040 578 266 485 1230 1132 883 1013 874 126 501 1552 6 884 577 482 482 373 1064 893 1292 357 442 873 126 572 429 27