W swell 3 to 5 ft at 6 seconds. At a 20-second interval it would be difficult to even detect that there was a swell.
Understanding Marine Weather Forecasts Vaughn Allen Yacht Sales
WEDNESDAY Southeast winds 18 to 23 knots with gusts to around 30 knots.
. The period of the wave is 6 seconds. When a longer period swell feels bottom the wave slows and the. Wind waves 2 to 3 ft.
THU W winds 10 to 15 kt. Id prefer either the 2ft at 10 sec or 3 ft at 8 seconds. Wind waves 2 ft or less.
But if you change that interval to 6-seconds its going to be extremely rough. If the wind is blowing less than 20 knots we generally plan on going fishing as long as the seas are not bigger than 3 feet. The dominant wave period will sometimes change quickly from a short wave period like 6 seconds which is locally.
5ft 6 seconds NW If this is an east facing break the secondary swell is actually moving away from the coast do the primary swell will be most telling. 2 foot seas are great for fishing but can be rough for snorkeling. If its 2 to 3 seconds that means a lot more waves closer together.
A good rule of thumb is that unless the swells are over 8-feet if the interval is at least twice the wave height you should be good to go. A 3-foot wave with a 10-second swell period may only grow to be a 4-foot breaking wave while a 3-foot wave with a 20-second swell period can jack up to be a 15-foot breaking wave given the right. By Jimi Wed May 07 2008 401 am.
WED NIGHT W winds 10 to 20 kt. A 3 foot sea and 6 second wave period is almost calm. A good rule of thumb is that unless the swells are over 8-feet if the interval is at least twice the wave height you should be good to go.
Mixed swell W 2 to 4 ft at 12 seconds and S 2 ft at 15 seconds. Wind waves 1 to 3 ft. A mile per hour is a unit of speed commonly used in the United States.
8 feet at7 seconds very bad If combined seas are bigger than 9 feet use extreme caution reference only Wind waves or current waves swell combined sea 5 foot swell 1 foot wind waves 6 foot seas good 7 foot swell 1 foot wind waves 8 foot seas good but check period 8 foot swell 1 foot wind waves 9 foot seas ok check period. 6 8 seconds apart is a big gentle rollercoster where as 4 every 3 seconds will knock your fillings lose. TUESDAY NIGHT Northeast winds 10 to 15 knots becoming east 18 to 23 knots.
For exacgie say your local buoy indicates swell of 6 ft 14 secs. An average day is 10 to 15 knot winds and seas are about 2 feet. Dominant wave period 6 seconds.
Seas 2 to 4 feet. Slight chance of rain in the afternoon. W swell 3 to 4 ft at 7 seconds.
Sorry I spelt subscribe wrong. How deeply does water particle motion extend for this wave v Select 15 feet 10 feet How steep is this wave. Then traverse tot he left.
Just get up on plane like you normally would and trim the motor so you get the best ride. Something traveling at one foot per second is traveling exactly 03048 meters per second or about 0682 miles per hour. Generally id say that all 3 of your options given there would result in approx the same wave heights at the beach but the 10 sec swells will be travelling faster thus with more power.
Gusts up to 25 knots. Seas 5 to 6 feet. I like to see at least 2 seconds over the wave height ie.
It is equal to exactly 1609344 kilometers per hour. Wind waves 2 ft or less. SAT NIGHT W winds 10 to 20 kt becoming 5 to 10 kt late.
In 2-foot waves you should be able to span the waves with a 17 18 foot boat. THU NIGHT W winds 15 to 20 kt with gusts to 25 kt. The period of the wave is 6 seconds.
Dominant wave period 6 seconds. A foot per second is a unit of speed. W swell 3 to 4 ft at 6 seconds.
The dominant wave period in seconds is a wave period associated with highest energetic waves at a specific point or area in the total wave spectrum and is always either the swell period or the wind- wave period. For example using the minimum 30 percent wave height to boat length if your boat is 40 feet long then the wave-height danger zone starts at waves 12 feet high 40 x 30. Dont over analyze things.
3ft 12 seconds ESE Secondary swell. Its just a big swell and its safe and enjoyable to go. Patchy fog after midnight.
SUN Winds variable 10 kt or less becoming W 10 to 15 kt in the afternoon. Doubling the period gives about a 50 increase in the height of the breaking waves from the same sized swell. 3ft 12 seconds ESE Secondary swell.
As an example during an observed surf report most of the waves might be in the 2-3 foot range knee to waist high with poor to fair shape but every 15 minutes or so a set of three head high. In bigger waves where you cant get on top and run is where you need to take it easy. The second swell is 1 foot at 22 seconds and a third swell that at 6am is predicted to be 3 feet at 4 seconds.
Suppose a wave has a height of 3 feet and a wavelength of 30 feet. Dominant wave period is also known as the peak period. Take for example a 4-foot swell.
Youll find this is a Category 3 swell capable of producing waves 75-100 ft. Seas 3 to 6 feet. Using this table go to the 14 sec column then work your way down the column until you find 6 ft.
A wave 12 feet high could knock down a boat 40 feet long if the boat is caught somewhere near beam onto the wave as it breaks. A 3 foot swell with an 8 second period moves at about 1248 nautical miles per hour. 4ft 10 seconds 6ft breaking waves.
But the same 3 foot swell with a 22 second period moves at about 3432 nautical miles per hour. Combined seas 4 to 6 ft dominant period 19 seconds. W swell 4 to 5 ft at 6 seconds.
Taking it a step further you can then expect that any swell with a combination of swell size and period greater. 4ft 20 seconds 9ft breaking waves. A larger boat such as a party boat you wont feel it as much as a smaller say 25 or 30 center console.
Its something you need to do and get the feel for it. Longer period swells have a lot more energy and are moving a lot faster than their short period counterparts and so theres a lot more water movement. Wind waves 1 to 3 ft.
But if you change that interval to 6-seconds its going to be extremely rough. We have an easy guide to what sort of waves to expect at different periods here. 4ft 9 seconds SSE.
At a 20-second interval it would be difficult to even detect that there was a swell. Wave period is way more important than wave height IMHO at least until you get over 10. The forecast predicts that the combination of these three swells will lead to waves in the 2-4 range.
Take for example a 4-foot swell. They usually say something like 4 foot sea with 10 seconds which means 10 seconds between sets of waves. Wave height predictions are most useful for seeing a trend at a.
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