Severe Thunderstorm Warning

Locations Affected

Rockville, MD ∙ Gaithersburg, MD ∙ Middleburg, VA ∙ Redland, MD ∙ Glenwood, MD ∙ Loudoun Valley Estates, VA ∙ Barnesville, MD ∙ Green Valley, MD ∙ Cascades, VA ∙ Travilah, MD

Full Alert Message

BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Baltimore MD/Washington DC 327 PM EDT Thu Jun 19 2025 The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... South central Carroll County in north central Maryland... Northwestern Howard County in central Maryland... Montgomery County in central Maryland... Southeastern Frederick County in north central Maryland... Loudoun County in northern Virginia... North central Fairfax County in northern Virginia... North central Fauquier County in northern Virginia... Northwestern Prince William County in northern Virginia... * Until 400 PM EDT. * At 327 PM EDT, a severe thunderstorm was located near Purcellville, or near Leesburg, moving east at 50 mph. HAZARD...Emergency management reports a history of downed trees with this line of storms. SOURCE...Radar indicated. IMPACT...Damaging winds will cause some trees and large branches to fall. This could injure those outdoors, as well as damage homes and vehicles. Roadways may become blocked by downed trees. Localized power outages are possible. Unsecured light objects may become projectiles. * Locations impacted include... Germantown, Rockville, Gaithersburg, Leesburg, Olney, Damascus, Broadlands, Lansdowne, Lowes Island, Brambleton, Poolesville, Aspen Hill, Potomac, Ashburn, Montgomery Village, Eldersburg, Sterling, North Potomac, Ballenger Creek, and Redland. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Large hail, damaging wind, and continuous cloud to ground lightning are occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3888 7787 3897 7791 3920 7778 3937 7742 3941 7697 3908 7709 TIME...MOT...LOC 1927Z 259DEG 44KT 3914 7763 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...OBSERVED MAX WIND GUST...60 MPH

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