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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 ...
Small craft advisory [55] Wind Advisory: Wind Advisory or Small craft advisory: 6–7 39 to 54 mph (34 to 47 knots) Gale warning [56] High wind warning: Tropical storm warning* 8–9 55 to 73 mph (48 to 63 knots) Storm warning [57] High wind warning: Tropical storm warning† 10–11 74–110 mph (64 to 99 knots) Hurricane Force Wind Warning [58]
A flash flood warning (SAME code: FFW) is a severe weather warning product of the National Weather Service that is issued by national weather forecasting agencies throughout the world to alert the public that a flash flood is imminent or occurring in the warned area. A flash flood is a sudden, violent flood after a heavy rain, or occasionally ...
Special weather statement. A Special Weather Statement (SAME event code SPS) is a form of weather advisory. Special Weather Statements are issued by the National Weather Service of the United States (NWS) and the Meteorological Service of Canada (MSC). There are no set criteria for special weather statements in either country.
Tornado warning. A tornado warning (SAME code: TOR) is a public warning that is issued by weather forecasting agencies to an area in the direct path of a tornado, or a severe thunderstorm capable of producing one, and advises individuals in that area to take cover. Modern weather surveillance technology such as Doppler weather radar can detect ...
Hazardous weather outlook. Heat advisory. Heavy freezing spray warning. Heavy freezing spray watch. Heavy snow warning. History of Atlantic hurricane warnings. Hong Kong rainstorm warning signals. Hong Kong tropical cyclone warning signals. HURCON.
A flood warning or flash flood warning is issued when flooding is imminent or already occurring. When flood warnings are issued, it means that area waterways will likely soon be in flood. [2] Not all flood watches suggest that large-scale flooding, such as during landfalling tropical cyclones, is possible.
Storm warning. Storm warning flag (US) At sea, a storm warning is a warning issued by the National Weather Service of the United States when winds between 48 knots (89 km/h, 55 mph) and 63 knots (117 km/h, 73 mph) are occurring or predicted to occur soon. The winds must not be associated with a tropical cyclone. [1]