* WHAT...Dangerously large breaking waves 25 to 35 ft. * WHERE...Coastal Del Norte and Northern Coastal Humboldt Counties. * WHEN...From 1 PM Friday to 4 AM PST Sunday. . * IMPACTS...Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening surf conditions and significant beach erosion can be expected. * ADDITIONAL DETAILS...After only brief improvement late Saturday through Sunday, a second large swell is forecast late Sunday through Monday.