Waarschuwingen Algonquin Hills, Virginia

Overstroming

6-7 8:00 p.m. 20:00 – 7-7 4:00 a.m. 04:00

Flood Watch issued July 6 at 2:23PM EDT until July 7 at 12:00AM EDT by NWS Baltimore MD/Washington DC ...The combination of a slow moving frontal zone with a tropical air mass in place will increase the risk of flash flooding through this evening... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Washington DC, and portions of Maryland, including the following areas, Anne Arundel, Calvert, Carroll, Cecil, Central and Southeast Howard, Central and Southeast Montgomery, Charles, Frederick, Northern Baltimore, Northwest Harford, Northwest Howard, Northwest Montgomery, Prince Georges, Southeast Harford, Southern Baltimore, St. Marys and Washington, Virginia, including the following areas, Albemarle, Arlington/Falls Church/Alexandria, Central and Southeast Prince William/Manassas/Manassas Park, Clarke, Culpeper, Eastern Loudoun, Fairfax, Frederick, Greene, King George, Madison, Northern Fauquier, Northern Virginia Blue Ridge, Northwest Prince William, Orange, Page, Rappahannock, Shenandoah, Southern Fauquier, Spotsylvania, Stafford, Warren and Western Loudoun, and panhandle West Virginia, including the following areas, Berkeley, Jefferson and Morgan. * WHEN...Until midnight EDT tonight. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Multiple rounds of heavy rainfall are possible through this evening, some of which may occur over areas which recently experienced flooding rains. Slow storm motions and repeat thunderstorm activity will occur within a tropical air mass. Hourly rainfall rates could push into the 2 to 3 inch range in the strongest storms, with an inch in 20 minutes possible. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

National Weather Service

Onweer

7-7 2:57 a.m. 02:57 – 7-7 3:30 a.m. 03:30

Severe Thunderstorm Warning issued July 6 at 10:57PM EDT until July 6 at 11:30PM EDT by NWS Baltimore MD/Washington DC SVRLWX The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... The south central City of Manassas Park in northern Virginia... Central Prince William County in northern Virginia... The City of Manassas in northern Virginia... * Until 1130 PM EDT. * At 1057 PM EDT, a severe thunderstorm was located over Bull Run, or 7 miles southwest of Centreville, moving southeast at 15 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... Dale City, Linton Hall, Bull Run, Manassas, Sudley, Manassas Park, and Independent Hill. Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. 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.

National Weather Service