Harmful swimming, lakeshore flooding Saturday

The advisories are for Lake Michigan seashores from Allegan County north to Manistee County. They’re in impact from early Saturday morning via late Saturday evening.

Seashores with significantly harmful situations embody Grand Haven State Park, Pere Marquette Park in Muskegon and Ludington State Park.

Lake Michigan forecast:

Winds of 10-20 knots growing to 15-25 knots after dawn Saturday.

Waves of 2-Four ft growing to 4-6 ft after dawn Saturday.

Excessive wave motion, robust currents and harmful swimming situations are anticipated.

Robust structural and longshore currents are anticipated. Rip currents are attainable.

Potential impacts:

Southwestward-facing areas will be most prone to minor seaside erosion and lakeshore flooding. The south facet of piers and breakwaters will likely be particularly harmful. Piers and breakwaters will seemingly be overtopped by waves which can sweep folks into the water.

Structural currents kind alongside piers the place longshore currents and wave motion stream into the construction. Structural currents can sweep you out into deeper water alongside the pier construction.

A longshore present is a lake present that strikes parallel to shore. Longshore currents might be robust sufficient to stop swimmers from with the ability to hold their ft on the underside, making it tough to return to shore.

Rip currents are highly effective channels of water flowing rapidly away from shore, which happen most frequently at low spots or breaks in sandbars. Rip currents can sweep you into deeper water.

A lakeshore flood advisory signifies that onshore winds will generate flooding of low areas alongside the lakeshore.

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