Public Information Statement
Issued by NWS Sterling, VA

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NOUS41 KLWX 170956
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DCZ001-MDZ006-011-013-014-016>018-507-508-VAZ052>057-502-171500-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
555 AM EDT SUN MAY 17 2015

...PUBLIC INFORMATION STATEMENT...

THE FOLLOWING IS A SAFE BOATING MESSAGE FROM THE NATIONAL SAFE
BOATING COUNCIL AND THE NATIONAL WEATHER SERVICE FOR THIS YEAR`S
SAFE BOATING WEEK.

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 HERE ON THE BAY AND TIDAL POTOMAC PREDICT
WIND SPEED AND DIRECTION, WAVE HEIGHTS, AND SIGNIFICANT WEATHER.
MARINE FORECASTS COVER LARGE AREAS WITH THE FORECAST WEATHER
ELEMENTS OFTEN GIVEN IN RANGES...E.G., SOUTH WINDS 5 TO 10 KNOTS.
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. THE SIGNIFICANT WEATHER MAY NOT OCCUR OVER
THE ENTIRE MARINE AREA OR EVEN DURING THE ENTIRE FORECAST PERIOD.
BOATERS SHOULD PLAN FOR CONDITIONS ABOVE AND BELOW THE FORECAST
RANGES.

PRIOR TO HEADING OUT, TAKE NOTE OF ANY CURRENT ADVISORIES OR
WARNINGS, INCLUDING SMALL CRAFT ADVISORIES, GALE OR STORM WATCHES OR
WARNINGS.  THESE MESSAGES ALERT MARINERS TO THE POTENTIAL FOR HIGH
WINDS AND WAVES NOW OCCURRING OR FORECAST.

SPECIAL MARINE WARNINGS ARE ISSUED FOR A SUDDEN INCREASE IN GUSTY
WINDS TO GALE FORCE OF 34 KNOTS...39 MPH OR HIGHER, WATERSPOUTS...
TORNADOES OVER WATER...OR THREE QUARTER INCH DIAMETER HAIL. WARNINGS
TYPICALLY INDICATE A MORE IMMEDIATE THREAT TO MARINERS USUALLY
WITHIN THE NEXT TWO HOURS FROM WARNING ISSUANCE. WIND GUSTS OF 34
KNOTS OR MORE CAN OCCUR IN AND AROUND THUNDERSTORMS. BUT THEY CAN
ALSO OCCUR WELL AWAY FROM THUNDERSTORMS...E.G., THE STRONG OUTFLOW
WINDS FROM A SINGLE OR LINE OF THUNDERSTORMS OR EVEN STRONG SHOWERS
CAN PRODUCE A GUST FRONT BOUNDARY THAT CAN TRAVEL FAR AWAY FROM THE
ORIGINAL STORMS. SEEK SAFE HARBOR IMMEDIATELY IF A WARNING IS ISSUED
FOR AN AREA YOU ARE BOATING IN.

MARINE WEATHER STATEMENTS BRING ATTENTION TO SIGNIFICANT RAPIDLY
CHANGING CONDITIONS ON THE WATER, INCLUDING NON SEVERE
THUNDERSTORMS,  DENSE FOG OR GUSTY WINDS JUST BELOW GALE FORCE.

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 AT WWW.WEATHER.GOV AND THE
NATIONAL SAFE BOATING COUNCIL AT WWW.SAFEBOATINGCOUNCIL.ORG.

$$


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