* WHAT...For the High Surf Advisory, large breaking waves of 18 to 20 feet expected in the surf zone. For the Coastal Flood Warning, significant coastal flooding expected. Inundation of 2.5 to 3.5 feet above ground level is possible along shorelines and low-lying coastal area.

* WHERE...North Coast and Central Coast zones.

* WHEN...For the High Surf Advisory, from 10 PM this evening to 10 PM PST Saturday. For the Coastal Flood Warning, from 8 AM to 2 PM PST Saturday.

* IMPACTS...Significant coastal flooding due to high tides and storm surge is expected. This is expected to lead to numerous road closures. Low lying property including homes, businesses, and some critical infrastructure may be inundated. Large waves will wash over beaches, jetties, and other structures unexpectedly. People can be swept off rocks and jetties and drown while observing high surf. Localized beach and shoreline erosion is possible.

* ADDITIONAL DETAILS...Highest impacts will occur in the hours near high tide at around 11 AM. Winds and large breaking waves will exacerbate impacts due to coastal flooding. Additional minor coastal flooding is possible around high tide late Monday morning as well.

* WHAT...For the High Surf Advisory, large breaking waves of 18 to 20 feet expected in the surf zone. For the Coastal Flood Warning, significant coastal flooding expected. Inundation of 2.5 to 3.5 feet above ground level is possible along shorelines and low-lying coastal area.

* WHERE...North Coast and Central Coast zones.

* WHEN...For the High Surf Advisory, from 10 PM this evening to 10 PM PST Saturday. For the Coastal Flood Warning, from 8 AM to 2 PM PST Saturday.

* IMPACTS...Significant coastal flooding due to high tides and storm surge is expected. This is expected to lead to numerous road closures. Low lying property including homes, businesses, and some critical infrastructure may be inundated. Large waves will wash over beaches, jetties, and other structures unexpectedly. People can be swept off rocks and jetties and drown while observing high surf. Localized beach and shoreline erosion is possible.

* ADDITIONAL DETAILS...Highest impacts will occur in the hours near high tide at around 11 AM. Winds and large breaking waves will exacerbate impacts due to coastal flooding. Additional minor coastal flooding is possible around high tide late Monday morning as well.

* WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected.

* WHERE...Admiralty Inlet Area, Central Coast, San Juan County, Western Skagit County, Western Whatcom County, and Everett and Vicinity.

* WHEN...From 1 AM to 4 PM PST Saturday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result.

* ADDITIONAL DETAILS...Strongest winds are expected along the central coast, the Admiralty Inlet area, and the San Juans.