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Wind speed: Marine or beach hazard warning: Land warning: Tropical cyclone warning(s) Flags: Lights: Beaufort force: 25 to 38 mph (22 to 33 knots) Small craft advisory [56] Wind advisory: Wind advisory or small craft advisory: 6–7 39 to 54 mph (34 to 47 knots) Gale warning [57] High wind warning: Tropical storm warning* 8–9 55 to 73 mph (48 ...
A wind advisory is generally issued by the National Weather Service of the United States when there are sustained non thunderstorm winds of 31–39 miles per hour (50–63 km/h) and/or gusts of 46–57 miles per hour (74–92 km/h) over land. Winds over the said cap will trigger high wind alerts rather than a wind advisory
The National Weather Service issues a similar high wind warning (Specific Area Message Encoding code: HWW) for high winds on land. The criteria vary from place to place; however, in most cases, the warning applies to winds of 40 miles per hour (64 km/h) to 73 miles per hour (117 km/h) for at least 1 hour; or any gusts of 58 miles per hour (93 km/h) to 114 miles per hour (183 km/h) on land.
The National Weather Service shares alerts as it warns of potential risks from thunderstorms, flooding, tornadoes and other dangers. But when forecasters issue a watch or a warning for a specific ...
Here’s what to know about the difference between the weather alerts. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us ...
As the winds howl, the snow flies and the temperatures drop, the National Weather Service issues various alerts for wintry weather. Winter storms can trigger warnings, watches and advisories. What ...
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 ...
A small craft advisory is a type of wind warning issued by the National Weather Service in the United States. In Canada a similar warning is issued by Environment Canada. It is issued when winds have reached, or are expected to reach within 12 hours, a speed marginally less than gale force. A Small Craft Advisory may also be issued when sea or ...