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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]
Warning pennant Warning flag. A single red pennant was shown from the top of the tower as a small craft advisory; for a gale warning, two such pennants were used. Two square flags, red with a black square at center, indicate an approaching hurricane or winds >73 MPH. One such flag warns of storm-force winds or an approaching tropical storm.
A set of red warning flags (daylight) and red warning lights (night time) is displayed at shore establishments which coincide with the various levels of warning. [citation needed] In Canada, maritime winds forecast to be in the range of 6 to 7 are designated as "strong"; 8 to 9 "gale force"; 10 to 11 "storm force"; 12 "hurricane force".
Mariners advised to avoid hazardous conditions by remaining in port, seeking safe harbor, altering course, or securing vessels for severe conditions.
The insignia that denotes a small craft advisory is one red, triangular flag (two such flags, one placed above the other, signify a gale warning). Inland, this advisory is known as a wind advisory . A lake wind advisory is issued for winds just below this range, because unobstructed winds across the open waters of a lake are normally faster ...
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 ...
Red flag criteria is generally when relative humidity is at 15% or less, combined with sustained winds and/or gusts of 25 mph or greater. Both of these conditions must occur simultaneously for at ...
A gale is a strong wind; the word is typically used as a descriptor in nautical contexts. 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 ...