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Flood Watch

Status

New Event Expired

Start Time

Wed 07/16/2025 05:00 PM EDT

End Time

Thu 07/17/2025 12:00 AM EDT

Significance

Watch

Impacts

Moderate impact

Locations Affected

Baltimore, MD ∙ Washington, DC ∙ Alexandria, VA ∙ Gaithersburg, MD ∙ Frederick, MD ∙ Rockville, MD ∙ Bowie, MD ∙ Harrisonburg, VA ∙ Accokeek, MD ∙ Casanova, VA

Full Alert Message

URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Baltimore MD/Washington DC 1206 PM EDT Wed Jul 16 2025 ...FLOOD WATCH IN EFFECT FROM 5 PM EDT THIS AFTERNOON THROUGH THIS EVENING... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...The District of Columbia, and portions of Maryland, including the following areas, Anne Arundel, Carroll, Cecil, Central and Southeast Howard, Central and Southeast Montgomery, Frederick MD, Northern Baltimore, Northwest Harford, Northwest Howard, Northwest Montgomery, Prince Georges, Southeast Harford and Southern Baltimore, and Virginia, including the following areas, Albemarle, Arlington/Falls Church/Alexandria, Central and Southeast Prince William/Manassas/Manassas Park, Culpeper, Eastern Loudoun, Fairfax, Greene, Madison, Nelson, Northern Fauquier, Northwest Prince William, Rappahannock, Southern Fauquier and Western Loudoun. * WHEN...From 5 PM EDT this afternoon through this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Showers and thunderstorms will track across the area late this afternoon into this evening. Storms will be capable of producing very heavy rainfall, with 1 to 3 inches possible in an hour where stationary cells or multiple rounds occur. Widespread rainfall totals near an inch are expected, with localized maxes of 2-4 inches. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Technical Header

DCZ001-MDZ004>006-008-011-013-014-503>508-VAZ036>040-051-053-054-501- 502-505-506-526-527-170015- /O.NEW.KLWX.FA.A.0028.250716T2100Z-250717T0400Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ District of Columbia-Frederick MD-Carroll-Northern Baltimore- Cecil-Southern Baltimore-Prince Georges-Anne Arundel-Northwest Montgomery-Central and Southeast Montgomery-Northwest Howard- Central and Southeast Howard-Northwest Harford-Southeast Harford- Nelson-Albemarle-Greene-Madison-Rappahannock-Culpeper-Fairfax- Arlington/Falls Church/Alexandria-Northern Fauquier-Southern Fauquier-Western Loudoun-Eastern Loudoun-Northwest Prince William- Central and Southeast Prince William/Manassas/Manassas Park- 1206 PM EDT Wed Jul 16 2025