Severe Thunderstorm Warning for District of Columbia, DC; Anne Arundel, MD; Howard, MD +8 more
Official alert fields
What you need to know
- Applies to
- District of Columbia, Anne Arundel, Howard, Montgomery, Prince Georges, Arlington, City of Alexandria, City of Fairfax and 3 more
- Effective
- Ended
- Official severity
- Severe
- Official urgency
- Immediate
- Official certainty
- Observed
What is happening
At 424 PM EDT, severe thunderstorms with a history of producing wind damage were located along a line extending from near Ellicott City to Rossmoor to American Legion Bridge, moving east at 40 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Damaging winds will cause some trees and large branches...
What the bulletin says to do
For your protection move to an interior room on the lowest floor of a building. Wind damage with these storms will occur before any rain or lightning. Do not wait for the sound of thunder before taking cover. SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from windows. Continuous cloud to ground lightning is occurring with these storms. 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 these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways.
Full official description
Bulletin details
At 424 PM EDT, severe thunderstorms with a history of producing wind damage were located along a line extending from near Ellicott City to Rossmoor to American Legion Bridge, moving east at 40 mph. HAZARD...60 mph wind gusts. 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, Arlington, Alexandria, Columbia, Germantown, Rockville, Bethesda, Gaithersburg, Reston, Bowie, Severn, Annandale, Clinton, Olney, Springfield, College Park, Crofton, South Riding, Fort Washington, and Herndon.
Lifecycle record
Official revisions
- Update
Severe Thunderstorm Warning issued August 10 at 4:24PM EDT until August 10 at 4:45PM EDT by NWS Baltimore MD/Washington DC
Official revision - Alert
Severe Thunderstorm Warning issued August 10 at 3:57PM EDT until August 10 at 4:45PM EDT by NWS Baltimore MD/Washington DC
Official revision
Source and limitations
Publisher: Weather Alert Watch. Primary source: NWS Baltimore MD/Washington DC. This page reorganizes official fields and does not add a forecast or expand the affected area.
- CAP status
- Actual
- Message type
- Update
- Last collected