* WHAT...Very steep and hazardous seas 16 to 21 feet and west winds 10 to 20 kt with gusts up to 25 kt expected.
* WHERE...Coastal waters from Cape Mendocino to Pt. Arena CA out 10 nm.
* WHEN...Until 3 PM PST Monday.
* IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels.