Coastal Flood Warnings/Watches/Statements
Issued by NWS Grand Rapids, MI

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WHUS43 KGRR 220243
CFWGRR

COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1043 PM EDT MON AUG 21 2017

MIZ037-043-050-056-064-071-221045-
/O.CON.KGRR.BH.S.0015.170822T1000Z-170823T0100Z/
MASON-OCEANA-MUSKEGON-OTTAWA-ALLEGAN-VAN BUREN-
1043 PM EDT MON AUG 21 2017

...BEACH HAZARDS STATEMENT REMAINS IN EFFECT FROM 6 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 EXPECTED.

* LOCATION...BEACHES FROM ST. JOSEPH TO MANISTEE.

* BEACHES WITH PARTICULARLY DANGEROUS CONDITIONS INCLUDE...

 NORTH BEACH IN SOUTH HAVEN...   HOLLAND STATE PARK...
MUSKEGON STATE PARK...   MEARS STATE PARK IN PENTWATER...
STEARNS PARK IN LUDINGTON.

* OVERVIEW/POTENTIAL IMPACTS...WINDS WILL VEER TO THE WEST TO
  NORTHWEST AND INCREASE TO 15 TO 25 MPH TUESDAY. WAVES WILL
  BUILD TO 3 TO 5 FEET BY DAYBREAK TUESDAY AND TO 5 TO 7 FEET
  FOR THE REST OF THE DAY. NORTH SIDES OF NORTH PIERS WILL BE
  DANGEROUS PLACES TO SWIM.

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.

&&

$$


WEATHER.GOV/GRR


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