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whus43 kgrr 220741

coastal hazard message
national weather service grand rapids mi
341 am edt thu jun 22 2017

mason-oceana-muskegon-ottawa-allegan-van buren-
341 am edt thu jun 22 2017

...beach hazards statement remains in effect through this

* high wave action... strong currents and dangerous swimming 
  conditions expected. 

* strong structural currents expected.

* strong longshore currents possible.

* rip currents possible.

* location...beaches from st. joseph to manistee or appropriate 

* beaches with particularly dangerous conditions include...

 south beach in south haven...   grand haven state park...  
pere marquette park in muskegon.

* overview/potential impacts...south winds will increase to 15 to
  25 mph today. this will cause building waves to over 3 feet 
  leading to hazardous swim conditions. 

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.



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