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In the United States of America, winds of force 6 or 7 result in the issuance of a small craft advisory, with force 8 or 9 winds bringing about a gale warning, force 10 or 11 a storm warning ("a tropical storm warning" being issued instead of the latter two if the winds relate to a tropical cyclone), and force 12 a hurricane-force wind warning ...
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 ...
Gale, storm and hurricane-force wind warnings are subsequently issued for the above areas by FMS, when a tropical cyclone is either causing or expected to cause either gale storm or hurricane-force winds within 24 hours. [34]
Gale warnings (and gale watches) allow mariners to take precautionary actions to ensure their safety at sea or to seek safe anchorage and ride out the storm on land. Though usually associated with deep low-pressure areas , winds strong enough to catalyze a gale warning can occur in other conditions too, including from anticyclones , or high ...
A Category 4 hurricane has winds of 113 to 136 kn (130 to 157 mph; 209 to 252 km/h), while a Category 5 hurricane has winds of at least 137 kn (158 mph; 254 km/h). [1] [3] A post tropical cyclone is a system that has weakened, into a remnant low or has dissipated and formal advisories are usually discontinued at this stage. [1]
Smallest tropical cyclone with hurricane strength on record: Hurricane Oscar - 2024 - gale-force winds extended 35 mi (55 km) from storm center Smallest tropical cyclone eye on record : Hurricane Wilma – 2005 – diameter 2.3 miles (3.7 km)
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 MPH for at least 1 hour; or any gusts of 58-114 miles per hour on land unless a ...
At the time of the 1900 hurricane, the highest point in the city of Galveston was only 8.7 ft (2.7 m) above sea level. [23] The hurricane brought with it a storm surge of over 15 ft (4.6 m) that washed over the entire island. Storm surge and tides began flooding the city by the early morning hours of September 8.