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Freeze Warning

Status

Event Continued Active alert

Start Time

Tue 04/21/2026 02:00 AM EDT

End Time

Tue 04/21/2026 10:00 AM EDT

Significance

Warning

Impacts

High impact

Locations Affected

Baltimore, MD ∙ Washington, DC ∙ Alexandria, VA ∙ Frederick, MD ∙ Gaithersburg, MD ∙ Rockville, MD ∙ Bowie, MD ∙ Harrisonburg, VA ∙ Fairfax Station, VA ∙ New Midway, MD

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 131 AM EDT Tue Apr 21 2026 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 26 to 30 degrees expected. * WHERE...Portions of central, north central, northeast, and northern Maryland, central, northern, northwest, and western Virginia, and panhandle West Virginia. * WHEN...Until 10 AM EDT this 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. To prevent water pipes from freezing, wrap or drain or allow them to drip slowly.

Technical Header

MDZ003>006-008-503-505-507-VAZ025>031-038>040-050-051-501-502- 505>508-526-WVZ051>053-211345- /O.CON.KLWX.FZ.W.0003.260421T0600Z-260421T1400Z/ Washington-Frederick-Carroll-Northern Baltimore-Cecil-Northwest Montgomery-Northwest Howard-Northwest Harford-Augusta-Rockingham- Shenandoah-Frederick-Page-Warren-Clarke-Greene-Madison- Rappahannock-Orange-Culpeper-Northern Fauquier-Southern Fauquier- Western Loudoun-Eastern Loudoun-Northern Virginia Blue Ridge- Central Virginia Blue Ridge-Northwest Prince William-Morgan- Berkeley-Jefferson- 131 AM EDT Tue Apr 21 2026