* WHAT...Rough bar conditions expected.
* WHERE...In the Main Channel of the Columbia River Bar.
* WHEN...Until 1 AM PDT Tuesday.
* IMPACTS...Conditions will be hazardous to small craft, especially when operating near to, or attempting to cross, the Columbia River Bar.
* ADDITIONAL DETAILS...General seas 4 to 5 ft through Tuesday evening. Ebb current of 4.66 kt at 843 PM Monday. Seas 4 to 5 ft.