* WHAT...West winds 10 to 15 kt with gusts up to 20 kt.
* WHERE...Chesapeake Bay north of Pooles Island MD, Tidal Potomac from Key Bridge to Indian Head MD, and Patapsco River including Baltimore Harbor.
* WHEN...From 6 AM to 6 PM EDT Thursday.
* IMPACTS...Conditions will be hazardous to small craft.