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Beach Hazards Statement


COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
402 PM EDT MON JUL 6 2015

MIZ056-064-071-070415-
/O.EXT.KGRR.BH.S.0009.150707T0600Z-150708T0300Z/
OTTAWA-ALLEGAN-VAN BUREN-
402 PM EDT MON JUL 6 2015

...BEACH HAZARDS STATEMENT NOW IN EFFECT FROM 2 AM EDT TUESDAY
THROUGH TUESDAY EVENING...

* HIGH WAVE ACTION... STRONG CURRENTS AND DANGEROUS SWIMMING
  CONDITIONS EXPECTED.

* STRONG STRUCTURAL CURRENTS EXPECTED.

* STRONG LONGSHORE CURRENTS EXPECTED.

* RIP CURRENTS POSSIBLE.

* LOCATION...BEACHES FROM ST. JOSEPH TO GRAND HAVEN.

* BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS LATE TONIGHT
  AND ON TUESDAY INCLUDE... NORTH BEACH IN SOUTH HAVEN...
  HOLLAND STATE PARK...

* OVERVIEW/POTENTIAL IMPACTS...NORTH WINDS WILL INCREASE LATE
  TONIGHT AND CONTINUE ON TUESDAY. WINDS WILL REACH THE 15 TO 25
  MPH RANGE WITH SOME GUSTS TOWARDS 30 MPH POSSIBLE IN THIS TIME
  FRAME. WAVES WILL BUILD INTO THE 4 TO 7 RANGE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HIGH WAVE ACTION MAKES SWIMMING DIFFICULT AND CAN TIRE EVEN A
STRONG SWIMMER QUICKLY.

STRUCTURAL CURRENTS FORM ALONG PIERS WHERE LONGSHORE CURRENTS AND
WAVE ACTION FLOW INTO THE STRUCTURE. STRUCTURAL CURRENTS CAN
SWEEP YOU OUT INTO DEEPER WATER ALONG THE PIER STRUCTURE.

A LONGSHORE CURRENT IS A LAKE CURRENT THAT MOVES PARALLEL TO
SHORE. LONGSHORE CURRENTS CAN BE STRONG ENOUGH TO PREVENT
SWIMMERS FROM BEING ABLE TO KEEP THEIR FEET ON THE BOTTOM...
MAKING IT DIFFICULT TO RETURN TO SHORE.

RIP CURRENTS ARE POWERFUL CHANNELS OF WATER FLOWING QUICKLY AWAY
FROM SHORE...WHICH OCCUR MOST OFTEN AT LOW SPOTS OR BREAKS IN
SANDBARS. RIP CURRENTS CAN SWEEP YOU INTO DEEPER WATER.

&&

$$

DUKE

WEATHER.GOV/GRR

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