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Small craft advisory pennant. 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 ...
In United States maritime warning flag systems, two red pennants indicate a gale warning; the use of one such flag denotes a small craft advisory. The National Weather Service issues a storm warning for higher winds of 48 knots (89 km/h; 55 mph) to 63 knots (117 km/h; 72 mph) at sea.
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 to 63 knots) Storm warning [58] High wind warning: Tropical storm warning† 10–11 74–110 mph (64 to 99 knots) Hurricane force wind warning ...
Through a system of flags, the towers can indicate not only wind-related warnings, but also major aspects of the local daily weather forecast. 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 ...
A gale watch is issued by the National Weather Service of the United States when there is an increased risk for a gale-force wind event, meaning sustained surface winds, or frequent gusts, of 34 to 47 knots (39 to 54 mph; 63 to 87 km/h), but the occurrence, location, and/or timing of the event is still uncertain.
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An excessive heat warning, the highest alert level on a four-tier scale, means everyone needs to take precautions to stay safe in the heat because "you may become seriously ill or even die," the ...
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