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A hurricane force wind warning is a warning issued by the National Weather Service of the United States when sustained winds or frequent gusts of 64 knots (118 km/h, 74 mph) or greater are either being observed or are predicted to occur.[1] The winds must not be directly associated with a tropical cyclone, or a hurricane warning will be issued.[2] If winds are lighter than 64 knots, a storm warning or gale warning will be issued.[3] The hurricane force wind warning is only used to warn of the possibility of wind which reaches hurricane-level severity, but lacks direct connection with a hurricane system.[3] The hurricane force wind can either signal sustained winds of 64 knots, or gusts of 64 knots lasting for two or more hours.[4]
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]
- ^ Meteorologists, Gene Norman and Allison Chinchar, CNN. "A rare hurricane force wind warning was just issued for Alaska". CNN. Retrieved 2022-04-14.
{{cite web}}:|first=has generic name (help)CS1 maint: multiple names: authors list (link) - ^ National Weather Service. "Hurricane Force Wind Warning". Glossary - National Weather Service. Retrieved 21 July 2011.
- ^ a b "Wind Warnings". www.boat-ed.com. Retrieved 2022-04-14.
- ^ US Department of Commerce, NOAA. "Watch/Warning/Advisory Definitions". www.weather.gov. Retrieved 2022-04-14.
- ^ "Warning Signals". www.seaflags.us. Retrieved 2022-04-14.
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