Freeze Watch
Status
New Event Active alertStart Time
Tue 04/21/2026 02:00 AM EDTEnd Time
Tue 04/21/2026 10:00 AM EDTSignificance
WatchImpacts
Moderate impact
Locations Affected
Baltimore, MD ∙ Rockville, MD ∙ Gaithersburg, MD ∙ Frederick, MD ∙ Harrisonburg, VA ∙ Bel Air North, MD ∙ Southern Gateway, VA ∙ Shannondale, WV ∙ Bay View, MD ∙ Wilson-Conococheague, MDFull Alert Message
URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1159 PM EDT Sat Apr 18 2026 ...FREEZE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING... * WHAT...Sub-freezing temperatures as low as 29 to 32 degrees possible, especially northwest of I-95. * WHERE...In Maryland, Central and Southeast Howard, Central and Southeast Montgomery, Southeast Harford, and Southern Baltimore Counties. In Virginia, Albemarle, Nelson, Spotsylvania, Central and Southeast Prince William/Manassas/Manassas Park, Fairfax, and Stafford Counties. * WHEN...From late Monday night through Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold.
Technical Header
MDZ011-504-506-508-VAZ036-037-053-055-056-527-191200- /O.NEW.KLWX.FZ.A.0003.260421T0600Z-260421T1400Z/ Southern Baltimore-Central and Southeast Montgomery-Central and Southeast Howard-Southeast Harford-Nelson-Albemarle-Fairfax- Stafford-Spotsylvania-Central and Southeast Prince William/Manassas/Manassas Park- 1159 PM EDT Sat Apr 18 2026