Active AlertsBethesda, MD

What: Sub-freezing temperatures as low as 29 expected, especially in outlying areas away from larger bodies of water.
Where: Washington DC, and portions of central, northern, and southern Maryland, and central and northern Virginia.
When: From 2 AM to 10 AM EDT Tuesday.
Impacts: Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants from the cold. To prevent water pipes from freezing, wrap or drain or allow them to drip slowly.