A large dark cloud on the horizon, and all the fish swimming quickly to the other side of th lake (or ocean) with fear in their eyes.
Also thunder and lightning, high winds, rain, hail and finally tornadoes, water spouts, or the eyewall of a hurricane. With this last you'll realize you should have gone to port sooner.
Radar and a weather radio can also be helpful. As a backup plan, break an egg over your head. If the yolk goes in your eyes there is bad weather on the way. You could also sacrifice a goat and devine the answer from its entrails.
Usually on boats they have a barometer, and when the barometer begins to fall it indicates that bad weather is approaching. They also have computers on board which can access satellite data and marine forecasts.
When out on a lake or ocean, changes in wind patterns are usually the first indication bad weather is on the way. Clouds may also quickly increase.
A sign that foul weather is approaching on a boat could be rolling thunder or darkening clouds. Another sign might be the waves picking up and getting bigger.
A falling barometer indicates that foul weather is approaching. When the atmospheric pressure decreases rapidly, it typically means that a low-pressure system is moving in, which can bring stormy weather like rain, thunderstorms, or snow.
A drop in air pressure, increased cloud cover, darkening skies, and wind shifts are all indicators that foul weather, such as storms or heavy rain, may be approaching. Animals behaving unusually, such as seeking shelter or becoming noisy, can also signal approaching bad weather.
Weather men have special equipment that inform them on upcoming weather. also, if a pine cone, closes, it meens a storm is coming, if its open, its gonna be a nice day :)
The winds will pick up, the sky will darken and the waves will get choppy. It is best to head in when this is occurring.
A sign that foul weather is approaching on a boat could be rolling thunder or darkening clouds. Another sign might be the waves picking up and getting bigger.
A falling barometer indicates that foul weather is approaching. When the atmospheric pressure decreases rapidly, it typically means that a low-pressure system is moving in, which can bring stormy weather like rain, thunderstorms, or snow.
A drop in air pressure, increased cloud cover, darkening skies, and wind shifts are all indicators that foul weather, such as storms or heavy rain, may be approaching. Animals behaving unusually, such as seeking shelter or becoming noisy, can also signal approaching bad weather.
Weather men have special equipment that inform them on upcoming weather. also, if a pine cone, closes, it meens a storm is coming, if its open, its gonna be a nice day :)
Weather men have special equipment that inform them on upcoming weather. also, if a pine cone, closes, it meens a storm is coming, if its open, its gonna be a nice day :)
Weather men have special equipment that inform them on upcoming weather. also, if a pine cone, closes, it meens a storm is coming, if its open, its gonna be a nice day :)
A Marine Chart.
The winds will pick up, the sky will darken and the waves will get choppy. It is best to head in when this is occurring.
Usually fair is given as the antonym for foul, as in foul play, foul weather, etc. There are many others, however, as there are several definitions of foul to begin with.
A falling barometric reading indicates that the atmospheric pressure is decreasing, which typically suggests that a low-pressure system or a storm is approaching. This change in pressure can be associated with cloudy, rainy weather and potentially strong winds.
The alleged presence of the 'Bell Witch' was accompanied by a foul odor. The weather turned suddenly foul. Put on your foul weather gear. See the related link(s) listed below for more information:
Though you do not state where you are sailing from, yes is the quick answer. Foul weather gear is essential for all but very short passages.