Public Information Statement
Issued by NWS Chicago, IL

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PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
900 AM CDT SUN MAY 17 2015

...MAY 16 THROUGH MAY 22 IS NATIONAL SAFE BOATING WEEK...TODAYS
SUBJECT...MARINE FORECASTS...

THE FOLLOWING IS A SAFE BOATING MESSAGE FROM THE NATIONAL SAFE
BOATING COUNCIL AND THE NATIONAL WEATHER SERVICE.

UNDERSTANDING A MARINE FORECAST IS CRITICAL TO SAFE BOATING. WEATHER
AND WAVE CONDITIONS CAN CHANGE SUDDENLY...CATCHING BOATERS OFF GUARD
AND CREATING LIFE THREATENING CONDITIONS.

TYPICAL MARINE FORECASTS PREDICT WIND SPEED AND DIRECTION...WAVE
HEIGHTS AND PERIODS...ROUGHNESS OF NEAR SHORE WATERS...AND
SIGNIFICANT WEATHER. MARINE FORECASTS COVER LARGE AREAS AND THE
FORECAST ELEMENTS ARE OFTEN GIVEN IN RANGES. THE SIGNIFICANT WEATHER
MAY NOT OCCUR OVER THE ENTIRE AREA OR DURING THE ENTIRE FORECAST
PERIOD. THE RANGES REPRESENT AVERAGE CONDITIONS OVER A PERIOD OF
TIME...USUALLY 12 HOURS...AND THE ACTUAL CONDITIONS MAY BE LOWER OR
HIGHER THAN THE FORECAST RANGE. BOATERS SHOULD PLAN FOR CONDITIONS
ABOVE AND BELOW THE PREDICTED RANGES.

TAKE PARTICULAR NOTE OF ANY CURRENT ADVISORIES AND
WARNINGS...INCLUDING SMALL CRAFT ADVISORIES...GALE OR STORM WARNINGS WHICH
ALERT MARINERS TO EITHER HIGH WINDS OR WAVES OCCURRING NOW OR
FORECAST TO OCCUR UP TO 24 HOURS FROM NOW.  SPECIAL MARINE WARNINGS
ARE ISSUED FOR SUDDEN INCREASE IN WINDS TO OVER 35
KNOTS...WATERSPOUTS...AND HAIL OF THREE QUARTERS OF AN INCH OR GREATER
WHICH INDICATE A MORE IMMEDIATE THREAT.  MARINE WEATHER STATEMENTS
BRING ATTENTION TO SIGNIFICANT RAPIDLY CHANGING CONDITIONS ON THE
WATER INCLUDING INCREASE IN WINDS...NON-SEVERE THUNDERSTORMS...
DEVELOPMENT OF DENSE FOG AND EVEN SNOW SQUALLS OR STRONG AND GUSTY
RAIN SHOWERS.

YOU SHOULD HAVE A MARINE VHF TRANSCEIVER WITH BUILT-IN NOAA WEATHER
RADIO CHANNELS.  IF YOU VENTURE BEYOND ABOUT A 25 NAUTICAL MILE
RANGE FROM SHORE...YOU SHOULD CONSIDER BUYING A GOOD QUALITY HF
SINGLE SIDEBAND TRANSCEIVER AND SATELLITE PHONE.

BEFORE SETTING OUT...OBTAIN THE LATEST MARINE FORECAST AND WARNING
INFORMATION FROM WWW.WEATHER.GOV/MARINE OR NOAA WEATHER RADIO.
SEVERAL DAYS AHEAD OF TIME YOU CAN BEGIN LISTENING FOR EXTENDED
OUTLOOKS WHICH GIVE GENERAL INFORMATION OUT TO THE NEXT 5 DAYS IN
BOTH GRAPHICAL AND TEXT FORMAT.

THIS MESSAGE WAS BROUGHT TO YOU BY THE NATIONAL WEATHER SERVICE AND
THE NATIONAL SAFE BOATING COUNCIL.  VISIT THE NATIONAL WEATHER
SERVICE ON THE WEB AT WWW.WEATHER.GOV...AND THE NATIONAL SAFE
BOATING COUNCIL AT WWW.SAFEBOATINGCOUNCIL.ORG.


$$



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