Issued by NWS Baltimore MD/Washington DC at 4:42 PM on October 16.
What: Sub-freezing temperatures in the upper 20s and low 30s are possible.
Where: In Maryland, Carroll, Frederick, Northern Baltimore, and Northwest Harford Counties. In Virginia, Western Loudoun County.
When: From late Saturday night through Sunday morning.
Impacts: Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
What to do
Take steps now to protect tender plants from the cold.
Source: National Weather Service. Alerts may be updated, extended or cancelled; see weather.gov for the latest.
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