Maryland Severe Thunderstorm Warning | Effective 05/20/2026 13:55

Headline: 
Severe Thunderstorm Warning issued May 20 at 4:55PM EDT until May 20 at 5:30PM EDT by NWS Baltimore MD/Washington DC
Event: 
Severe Thunderstorm Warning
Urgency: 
Immediate
Effective: 
May 20, 2026 - 1:55pm
Expires: 
May 20, 2026 - 2:30pm
Description: 
SVRLWX The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... Southeastern Harford County in northern Maryland... Southeastern Baltimore County in northern Maryland... Central Cecil County in northeastern Maryland... * Until 530 PM EDT. * At 455 PM EDT, a severe thunderstorm was located over Back River, moving east at 30 mph. HAZARD...60 mph wind gusts and quarter size hail. 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... Baltimore, Middle River, Aberdeen, Havre De Grace, Aberdeen Proving Ground, North Point State Park, Sparrows Point, Back River, Millers Island, Dundalk, Bel Air South, Essex, Parkville, Carney, Perry Hall, Rosedale, Rossville, White Marsh, Bowleys Quarters, and Riverside.
Instruction: 
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.
Area Description: 
Baltimore, MD; Cecil, MD; Harford, MD
Forcast Office: 
NWS Baltimore MD/Washington DC