* WHAT. Northwest winds 10 to 20 kt with gusts up to 30 kt and waves 2 to 4 ft. * WHERE. Chesapeake Bay from North Beach MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, Choptank River to Cambridge MD and the Little Choptank River, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN. Until 6 AM EDT Tuesday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Sub-freezing temperatures as low as 30 possible. * WHERE. Page, Shenandoah, Augusta, and Rockingham Counties. * WHEN. From late tonight through Wednesday morning. * IMPACTS. Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

* WHAT. Temperatures as low as 36 will result in frost formation. * WHERE. In Maryland, Northwest Howard, Carroll, Frederick MD, Washington, Cecil, Northern Baltimore, and Northwest Harford Counties. In West Virginia, Berkeley and Morgan Counties. * WHEN. Until 8 AM EDT this morning. * IMPACTS. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

* WHAT. North winds 10 to 15 kt with gusts up to 20 kt. * WHERE. Chesapeake Bay from North Beach MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, Choptank River to Cambridge MD and the Little Choptank River, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN. Until 6 AM EDT early this morning. * IMPACTS. Conditions will be hazardous to small craft.

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

* WHAT. For the first Small Craft Advisory, north winds 10 to 15 kt with gusts up to 20 kt. For the second Small Craft Advisory, northwest winds 10 to 15 kt with gusts up to 20 kt. * WHERE. Chesapeake Bay from North Beach MD to Smith Point VA, Tidal Potomac from Cobb Island MD to Smith Point VA, and Tangier Sound and the inland waters surrounding Bloodsworth Island. * WHEN. For the first Small Craft Advisory, until 6 AM EDT early this morning. For the second Small Craft Advisory, from midnight tonight to 6 PM EDT Wednesday. * IMPACTS. Conditions will be hazardous to small craft.

* WHAT. Temperatures as low as 36 will result in frost formation. * WHERE. In Maryland, Northwest Howard, Carroll, Frederick MD, Washington, Cecil, Northern Baltimore, and Northwest Harford Counties. In West Virginia, Berkeley and Morgan Counties. * WHEN. Until 8 AM EDT this morning. * IMPACTS. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.

* WHAT. Sub-freezing temperatures as low as 30 expected. * WHERE. Page, Shenandoah, Augusta, and Rockingham Counties. * WHEN. From 2 AM to 9 AM EDT Wednesday. * IMPACTS. Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.