Swell waves
Waves which have travelled into the area of observation after having been generated by previous winds in other areas. These waves may travel thousands of kilometres from their origin before dying away.
SWELLS: Ocean waves of regular and longer duration than wind waves.
SWELL Ocean waves that have traveled out of their generating area. Swell characteristically exhibits a more regular and longer period and has flatter wave crests than waves within their fetch.
Swell Wind-generated waves that have travelled out of their generating area. Swells characteristically exhibit smoother, more regular and uniform crests and a longer period than wind waves.
Heavy swells
The powerful winds that accompany tropical cyclones and east coast lows can and do generate huge waves.
Swell: Wave (rising and falling of the sea) caused by winds that can be at some distance or that have already stopped.
Synoptic Chart: Chart or map in which selected meteorological elements are represented over a large region at a given moment.
Swellnet, Streaming Surfcams, Daily Surf Reports (with images) and detailed long-range Surf Forecasts.
Coastalwatch, live cameras and surf forecasting.
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Europe ...
Swell Waves
Long waves formed by winds blowing over a distant area of ocean (fetch), that travel rapidly over the surface, having a uniform and orderly appearance characterised by regularly spaced wave crests.
Synoptic scale ...
SWELL - An ocean wave generated from a distant source, such as a storm system. Swell waves can travel great distances with very little energy loss. For example, most waves in Hawaii are generated by storms thousands of miles away.
Photo by Doswell
Squall lines typically form in unstable atmospheric environments in which low-level air can rise unaided after being initially lifted (e.g., by a front) to the point where condensation of water vapor occurs.
Combined seasThe combined height of swell and wind waves.CondensationThe process by which water vapor becomes a liquid; the opposite of evaporation, which is the conversion of liquid to vapor.
In oceanic terms, it is the apparent absence of motion of the water surface when there is no wind or swell. CALORIE In meteorology, it is the amount of heat required to raise the temperature of one (1) gram of water one (1) degree Celsius.
php Small Craft Advisory for Hazardous Seas(SCAHS) - An advisory for wind speeds lower than small craft advisory criteria, yet waves or seas are potentially hazardous due to wave height, wave period, steepness, or swell direction.
Used to describe the combination or interaction of wind waves and swells in which the separate components are not distinguished. This includes the case when swell is negligible or is not considered in describing sea state.
Swell waves travel along routes that mark out great circles. Great Lakes FaxbackDissemination systems housed at Weather Forecast Office (WFO) Cleveland by which Great Lakes customers request and receive hard copies of selected marine products.
Wind WavesLocal, short period waves generated from the action of wind on the water surface (as opposed to swell). Commonly referred to as waves.
Rogue WaveCommonly used term by mariners of a wave of an unexpected wave of much greater height or steepness than other waves in the prevailing sea or swell system. Rogue waves have been part of marine folklore for centuries.
Devoir, Leo Donner, Charles Doswell III, Thomas Dunne, Dale R. Durran, Ellsworth G. Dutton, John A. Dutton, Wesley Ebisuzaki, Brian K. Eder, David B. Enfield, Ted Engman, Dara Entekhabi, Edward S.
Doswell III, 1989: Microbursts - A Handbook for Visual Identification. NOAA, Environmental Research Laboratories, National Severe Storms Laboratory.
Doswell, Charles A. III, 1982: The Operational Meteorology of Convective Weather.
Chilblains Taken from old Middle English and Anglo Saxon terms ("chill," meaning cold or shiver, and "blains," meaning sore or swelling), this term refers to a distress of the skin as a result of exposure to cold temperatures.
Combined Seas- the interaction of wind waves and swell; the combined seas height is equal to the square root of the sum of the squares of the wind waves and swell.
Condensation- the occurrence of vapor transforming into a liquid.
The speed at which a particular wave front or swell train advances.
Grout Curtain
A barrier produced by injecting grout into a vertical zone, usually narrow (horizontally), and in the foundation to reduce seepage under a dam ...
forerunner - The low-frequency ocean swell that commonly arrives at the coast before the primary swell generated by a distant storm.
FLOODING WORSENS SOME ARE EVACUATED AS THE DELAWARE SWELLS
by SCOTT BIEBER, JOE NIXON And TIM DARRAGH, The Morning Call ...
Doswell III, Mike Emlaw, Mike Foster, Dave Gold, Paul Janish, Tim Marshall, Alan Moller, Mike Morgan, Steve Parker, Steve Piltz, Robert Prentice, Jim Purpura, Gene Rhoden, Lans Rothfusz, Dan Smith, Greg Stumpf, Steve Vasiloff.
Heavy Surf- the result of large waves breaking on or near the shore resulting from swells or produced by a distant storm.
CALM Atmospheric conditions devoid of wind or any other air motion. In oceanic terms, it is the apparent absence of motion of the water surface when there is no wind or swell.
At the end of its life, the Sun will start to fuse helium into heavier elements and begin to swell up, ultimately growing so large that it will swallow Earth. After a billion years as a "red giant," it will suddenly collapse into a "white dwarf.
 See also: Storm, Cloud, Precipitation, Clouds, Thunderstorm
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