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Public Information Statement

Statement as of 6:15 PM EDT on May 21, 2013


... The National Weather Service and neracoos (northeastern regional
association of coastal ocean observing systems) continues to observe
may 18th through 24th as National safe boating week...

... Wind and waves...

The following is a safe boating message from the National safe
boating Council and the National Weather Service... reminding you
that National safe boating week is may 18th through may 24th.

National statistics in 2011 indicated that 377 boats went down in
calm seas nationally. However... 287 crafts also sunk under
choppy... rouch or very rough conditions during this period.

Wind and waves affect all types of boats so it is important all
boaters know some basic facts about winds and waves. Wind over water
is usually stronger than over nearby land. Wind is the main factor
in wave development and in general... the stronger the wind... the
larger the waves.

Individual waves are measured from trough to crest. Seas are the
combination of both locally generated wind waves and distantly
generated swell waves and are expressed in the terms of the
significant-wave-height... the mean or average height of the highest
one third of the waves. It approximates the value an experienced
observer would report if visually estimating sea height. When
expressed as a range (for example... seas 3 to 5 ft)... this indicates
a degree of uncertainty in the forecast and/or expected changing
conditions. The danger presented to a vessel is a function of wave
steepness as well as wave height and is unique to each vessel. In
general for small vessels... for a given wave height the danger
increases as the wave period decreases.

"The seventh wave of the seventh set"... an old fisherman's tale?
Perhaps... but it does serve to highlight that wave and surf
conditions are not always constant. In open waters... the occasional
wave may be twice that of the surrounding sea. There are occasional
reports of "rogue" waves of an even greater ratio. Near
shore... waves are even less predictable. So-called "sneaker waves"
can grab the unwary who venture too close to the unpredictable sea.
Mariners may be drawn too close to the surf zone during periods of
relative calm. Proceed cautiously and always be wary of this not
uncommon phenomenon... especially in areas where breaking surf is
known to occur or appears likely.

Winds and waves can change quickly in speed... direction and
steepness so it is important you include a marine forecast in your
preparations for boating.

This message from the National safe boating Council was forwarded to
you by the National Weather Service and the northeast regional ocean
observing system... neracoos.

Weather Severe Map
Alaska - Areal Flood Warning , Areal Flood Watch , Frost Advisory , Special Weather Statement , Record Report , Public Information Statement
Arizona - Wind Advisory , Fire Weather Warning
Arkansas - Severe Thunderstorm Watch , Flood Warning , Flood Advisory , Special Weather Statement
California - High Surf Advisory , Wind Advisory , Lake Wind Advisory , Freeze Warning , Frost Advisory , Frost Advisory, Freeze Watch , Freeze Watch, Freeze Warning , Special Weather Statement
Colorado - Fire Weather Warning , Fire Weather Watch , Public Information Statement
Connecticut - Severe Thunderstorm Watch , Dense Fog Advisory , Public Information Statement
Florida - Record Report
Georgia - Flood Warning , Special Statement , Record Report
Hawaii - High Surf Advisory , Wind Advisory
Idaho - Lake Wind Advisory , Record Report
Illinois - Flood Warning , Record Report , Public Information Statement
Indiana - Record Report
Iowa - Flood Warning , Public Information Statement
Kansas - Areal Flood Advisory , Record Report , Public Information Statement
Kentucky - Record Report
Louisiana - Severe Thunderstorm Watch , Severe Thunderstorm Warning , Flood Warning , Special Statement
Maine - Public Information Statement
Massachusetts - Severe Thunderstorm Watch , Areal Flood Advisory , Special Statement , Public Information Statement
Michigan - Record Report
Minnesota - Flood Warning , Record Report
Mississippi - Severe Thunderstorm Watch , Severe Thunderstorm Warning , Flash Flood Warning , Flood Warning , Flood Advisory, Areal Flood Advisory , Flood Advisory , Special Weather Statement
Missouri - Flood Warning , Flood Advisory , Record Report , Public Information Statement
Montana - Lake Wind Advisory , Winter Storm Watch
Nebraska - Public Information Statement
Nevada - Lake Wind Advisory , Wind Advisory , Freeze Watch
New Hampshire - Severe Thunderstorm Warning , Public Information Statement
New Mexico - Fire Weather Watch
New York - Severe Thunderstorm Watch , Areal Flood Advisory , Dense Fog Advisory , Special Statement , Special Weather Statement
North Carolina - Areal Flood Advisory , Record Report
North Dakota - Flood Warning , Flood Warning, Areal Flood Warning , Areal Flood Warning , Flood Watch , Flash Flood Watch , Record Report , Public Information Statement
Ohio - Record Report
Oklahoma - Flood Warning , Flood Warning, Areal Flood Warning , Areal Flood Warning , Flood Watch
Oregon - Freeze Warning , Winter Weather Advisory , Special Weather Statement
Rhode Island - Public Information Statement
South Carolina - Flood Warning , Record Report
Tennessee - Severe Thunderstorm Warning , Flood Warning, Flash Flood Warning , Flood Warning , Flash Flood Warning , Flood Advisory, Areal Flood Advisory , Flood Advisory , Special Statement
Texas - Severe Thunderstorm Watch , Areal Flood Advisory , Special Statement , Special Weather Statement , Public Information Statement
Vermont - Severe Thunderstorm Watch , Areal Flood Advisory , Special Weather Statement
Virginia - Areal Flood Advisory , Record Report
Washington - Winter Weather Advisory , Record Report
West Virginia - Record Report
Wisconsin - Flood Warning , Areal Flood Advisory
Wyoming - Public Information Statement
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