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.
Beaufort Wind Scale - National Weather Service
Beaufort Wind Scale. 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 …
Beaufort Wind Scale - NOAA/NWS Storm Prediction Center
Gale. Moderately high (18-25 ft) waves of greater length, edges of crests begin to break into spindrift, foam blown in streaks. Twigs breaking off trees, generally impedes progress. 9. 41-47. Strong Gale. High waves (23-32 ft), sea begins to roll, …
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.
Beaufort scale | Definition & Measurements | Britannica
2024年9月24日 · Beaufort scale, scale devised in 1805 by Commander (later Admiral and Knight Commander of the Bath) Francis Beaufort of the British navy for observing and classifying wind force at sea. Originally based on the effect of the wind on a full-rigged man-of-war, in 1838 it became mandatory for log entries in all ships in the Royal Navy.
Beaufort Scale - National Weather Service
18 ft. (max 25) Moderately high waves of greater length. Edges of crests begin to break into the spindrift. The foam is blown in well-marked streaks along the direction of the wind. Head pushed back by the force of the wind if allowed to relax. Oilskins …
Beaufort Scale - National Geographic Society
2023年10月19日 · The Beaufort scale, officially known as the Beaufort wind force scale, is a descriptive table. It depicts the force of wind by a series of numbers, typically from 0 to 12. The Beaufort scale goes all the way to 17, but the last five numbers only apply to tropical typhoons.
Beaufort Wind Scale - Weather Prediction Center
2022年5月12日 · The Beaufort Wind Scale Force: Name: Wind Speed knots mph: Consequence: 0: Calm: 0: 0: Smoke rises vertically: Wave height: 0 m - Sea: Like a mirror: 1: Light air: 1-3: 1-3 ... Wind Speed Converter More Meteorological Conversions and Calculations NOAA/ National Weather Service
Beaufort wind force scale - Met Office
Beaufort wind force scale. The Beaufort scale, which is used in Met Office marine forecasts, is an empirical measure for describing wind intensity based on observed sea conditions.
The Beaufort Scale was originally developed in 1805 by Sir Francis Beaufort as a system for estimating wind strengths without the use of instruments.
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