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
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 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 Wind Scale - NOAA/NWS Storm Prediction Center
Beaufort Wind Scale. Developed in 1805 by Sir Francis Beaufort, U.K. Royal Navy. 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: ... Wind felt …
Beaufort wind force scale - Met Office
The Beaufort scale, which is used in Met Office marine forecasts, is an empirical measure for describing wind intensity based on observed sea conditions. These values refer to well-developed...
Beaufort Wind Scale - National Weather Service
Beaufort Wind Scale Developed in 1805 by Sir Francis Beaufort of England. Force Wind WMO Classification Appearance of Wind Effects; Kts MPH On the Water On Land; 0: Less than 1: Less than 1: Calm: Sea surface smooth and mirror-like: Calm, smoke rises vertically: 1: 1-3: 1-4: Light Air: Scaly ripples, no foam crests:
Beaufort Scale - National Weather Service
Wind stings face in temperatures below 35 deg F (2C). Slight effort in maintaining balance against wind. Smoke rises at about 15 deg. Both slack and taut halyards whip slightly in bent position. Low moaning, rather than whistle, in the rigging. Heavy flag extends and flaps more vigorously.
Beaufort scale | Definition & Measurements | Britannica
2025年1月5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 wind scale table - Canada.ca
Sea heaps up and white foam from breaking waves begins to be blown in streaks along the direction of the wind. Whole trees in motion. Inconvenience felt in walking against wind.
Beaufort Wind Scale - HWN
The Beaufort Wind Scale is named after Sir Francis Beaufort, an admiral in the British Navy. He developed the scale in 1805 in order to estimate wind speed by noting how sails move in the wind. It turned out to be a great help and was later adapted for use on land.