Research Article
Using the SWEPT Methodology for a Preliminary Wind Potential Estimation
Table 1
On-shore Beaufort scale.
| Beaufort number | Estimated Velocity (m/s) | International description | Observed conditions |
| 0 | <1 | Calm | Smoke rises vertically | 1 | 1 | Light air | Direction of wind shown by smoke drift but not by wind vanes | 2 | 2 | Light brise | Wind felt on face: leaves rustle, vanes move by wind | 3 | 4 | Gentle breeze | Leaves and small twigs in constant motion; wind extends light flag | 4 | 7 | Moderate | Raises duct, loose paper; small branches move | 5 | 10 | Fresh | Small trees in leaf begin to sway; crested wavelets form on inland waters | 6 | 12 | Strong | Large branches in motion; whistling heard in telephone wires; umbrellas used with difficulty | 7 | 15 | Near gale | Whole trees in motion; resistance felt walking against wind | 8 | 18 | Gale | Breaks, twigs off trees; impedes walking | 9 | 20 | Strong gale | Slight structural damages occurs | 10 | 26 | Storm | Trees uprooted; considerable damage | 11 | 30 | Violent storm | Widespread damage |
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