Storm Watch

* WHAT...For the Gale Warning, seas 18 to 23 ft at 11 to 12 seconds and south winds 30 to 35 kt with gusts up to 40 kt. For the Hazardous Seas Warning, very steep and hazardous seas 19 to 24 ft at 18 seconds and south winds 25 to 30 kt with isolated gusts up to 35 kt. For the Storm Watch, seas 16 to 18 ft at 12 to 13 seconds and south winds 30 to 35 kt with gusts up to 50 kt possible.

* WHERE...In the Main Channel of the Columbia River Bar.

* WHEN...Gale Warning, until 10 PM PST this evening. Hazardous Seas Warning, from 10 PM this evening to 4 PM PST Saturday. Storm Watch, from Saturday afternoon through late Saturday night.

* IMPACTS...Very strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.

* ADDITIONAL DETAILS...Ebb current of 4.93 kt at 638 PM Friday. Seas 15 to 20 ft. Ebb current of 2.21 kt at 727 AM Saturday. Seas 16 to 21 ft. Ebb current of 4.5 kt at 718 PM Saturday. Seas 12 to 17 ft.