* WHAT...High wave action, strong currents, and dangerous swimming conditions expected. Piers may be heavily swamped by waves.
* WHERE...Mason, Oceana, Muskegon, Ottawa, Allegan and Van Buren counties.
* WHEN...Through late tonight.
* IMPACTS...Strong currents can pull swimmers into deeper water and high waves can sweep people off piers.
* ADDITIONAL DETAILS...All beaches will have strong currents and many will have waves 3 to 6 feet. Beaches on the southside of south piers will be especially hazardous.