Beaufort scale - Wikipedia
A ship in a force 12 ("hurricane-force") storm at sea, the highest rated on the Beaufort scale. The Beaufort scale (/ ˈ b oʊ f ər t / BOH-fərt) is an empirical measure that relates wind speed to observed conditions at sea or on land. Its full name is the Beaufort wind force scale.
What Are Gale Force Winds And How Are They Formed? - Own …
2024年5月22日 · A gale force wind or gale is a strong, persistent wind ranging from 50 km/h or 31 mph to 102 km/h or 63 mph and is typically associated with but not limited to coastal regions. According to the Beaufort Scale, gale force winds can be broken down into four subcategories.
Gale - Wikipedia
The U.S. National Weather Service defines a gale as sustained surface wind moving at a speed between 34 and 47 knots (63.0 and 87.0 km/h; 17.5 and 24.2 m/s; 39.1 and 54.1 mph). [1] Forecasters typically issue gale warnings when winds of this strength are expected.
Beaufort Wind Scale - National Weather Service
One of the first scales to estimate wind speeds and the effects was created by Britain's Admiral Sir Francis Beaufort (1774-1857). He developed the scale in 1805 to help sailors estimate the winds via visual observations. The scale starts with 0 and goes to a force of 12. The Beaufort scale is still used today to estimate wind strengths.
Beaufort Wind Scale - NOAA/NWS Storm Prediction Center
Force Wind (Knots) WMO Classification Appearance of Wind Effects; On the Water On Land; 0: Less than 1: Calm: Sea surface smooth and mirror-like: Calm, smoke rises vertically: 1: 1-3: ... Near Gale: Sea heaps up, waves 13-19 ft, white foam streaks off breakers: Whole trees moving, resistance felt walking against wind: 8:
The Beaufort Wind Scale | Royal Meteorological Society
The Beaufort Scale is an empirical measure that relates wind speed to observed conditions at sea or on land. Its full name is the Beaufort wind force scale. Below is a table showing the Beaufort Scale with speeds in knots, miles per hour and kilometres per hour.
Gale - UK Sailmakers
Gale-force winds are common in open seas and coastal areas during strong weather systems, including low-pressure systems, and can lead to dangerous conditions due to increased wave heights, sea spray, and reduced maneuverability.
Gale | Tropical Storms, Hurricanes & Cyclones | Britannica
gale, wind that is stronger than a breeze; specifically a wind of 28–55 knots (50–102 km per hour) corresponding to force numbers 7 to 10 on the Beaufort scale. As issued by weather service forecasters, gale warnings occur when forecasted winds range from 34 …
Estimating Wind - National Weather Service
Strong Gale: 47 to 54 mph: Structural damage occurs, such as chimney covers, roofing tiles blown off, and television antennas damaged. Ground is littered with many small twigs and broken branches. 10: Whole Gale: 55 to 63 mph: Considerable structural damage occurs, especially on roofs. Small trees may be blown over and uprooted. 11: Storm Force ...
Gale Force Winds - Climate & Weather
Gale force winds occur when air from a high pressure system flows into a low pressure one. Although gales can be dangerous, they are moderate compared to more powerful storms.