* WHAT...Rough bar conditions expected. Seas 6 to 7 ft at 8 seconds and north winds 15 to 20 kt with gusts up to 25 kt.
* WHERE...In the Main Channel of the Columbia River Bar.
* WHEN...Until 5 AM PDT Wednesday.
* IMPACTS...Conditions will be hazardous to small craft, especially when operating near to, or attempting to cross, the Columbia River Bar.
* ADDITIONAL DETAILS...Ebb current of 4.8 kt at 931 PM Tuesday. Seas 6 to 7 ft. Ebb current of 3.19 kt at 938 AM Wednesday. Seas 5 to 6 ft. Ebb current of 4.87 kt at 1028 PM Wednesday. Seas 4 ft.