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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.
Gale warning flags (USA) A gale warning is an alert issued by national weather forecasting agencies around the world in an event that maritime locations currently or imminently experiencing winds of gale force on the Beaufort scale. [1]
The Beaufort Wind Scale applies visual clues to gauge how fast the wind is blowing. Watches, advisories and warnings Anytime a significant weather event is expected, the Weather Service will issue ...
The most common way of describing wind force is with the Beaufort scale [3] which defines a gale as wind from 50 kilometres per hour (14 m/s) to 102 kilometres per hour (28 m/s). It is an empirical measure for describing wind speed based mainly on observed sea conditions.
The same flag as a storm warning is used to indicate a tropical storm warning. On land, the National Weather Service issues a 'high wind warning' (Specific Area Message Encoding code: HWW) for storm-force winds, which also encompasses the lesser gale-force and greater hurricane force winds. In most cases, the warning applies to winds of 40-114 ...
Wind chill chart shows when frostbite is a danger A chart from the Weather Service shows the relationship between temperature, wind and how long before frostbite occurs. The wind chill chart.
In US maritime warning flag systems, two red square flags with a black square taking up the middle ninth of each flag is used to indicate a hurricane force wind warning (the use of one such flag denotes a storm warning or a tropical storm warning). The flags used to denote hurricane force winds are also used to warn of incoming hurricanes. [5]
Beaufort Wind Scale; 0 1 2 3 4 5 6 7 8 9 10 11 12; Calm: Light Air: Light Breeze: Gentle Breeze: Moderate Breeze: Fresh Breeze: Strong Breeze: Near Gale: Gale: Strong ...