Public Information Statement
Issued by NWS Binghamton, NY

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NOUS41 KBGM 191205
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NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043-044
-047-048-072-200400-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
800 AM EDT TUE MAY 19 2015

...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 16TH THROUGH MAY 22ND.

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, 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 PERIOD 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, DIRECTIONS, AND STEEPNESS SO
IT IS IMPORTANT YOU INCLUDE A MARINE FORECAST IN YOUR PREPARATIONS FOR
BOATING.

TO LEARN MORE, VISIT THE NATIONAL SAFE BOATING COUNCIL ONLINE, AT
WWW.SAFEBOATINGCOUNCIL.ORG  (ALL LOWER CASE).

CHECK WWW.WEATHER.GOV OR LISTEN TO NOAA WEATHER RADIO ALL HAZARDS FOR THE
LATEST MARINE FORECASTS AND WARNINGS.

$$

KAH



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