Updated at 3:50 p.m. — A Flash Flood Warning has been issued for Fairfax County until 6:30 p.m.

Updated at 2:45 p.m. — The Severe Thunderstorm Warning has been extended to 3:30 p.m., and the list of affected locations now includes Vienna and Falls Church.

Earlier: A Severe Thunderstorm Watch has been issued for Fairfax County and the rest of the D.C. area, joining a Flash Flood Watch that will take effect at 2 p.m. today (Thursday).

The thunderstorm watch took effect at 12:40 p.m. and will remain in place until 8 p.m., according to the National Weather Service.

A Severe Thunderstorm Warning has also been issued for the northeastern part of the county, including Wolf Trap and McLean around the American Legion Bridge. That will be in effect until 1:45 p.m.

The Severe Thunderstorm Warning from the NWS says:

* At 103 PM EDT, a severe thunderstorm was located over Ashburn, or near Broadlands, moving east at 25 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…
Rockville, Bethesda, Gaithersburg, Reston, Olney, Herndon, Broadlands, Lansdowne, Lowes Island, Brambleton, American Legion Bridge, Aspen Hill, Potomac, North Bethesda, Ashburn, Sterling, North Potomac, Redland, Wolf Trap and Great Falls.

“For your protection move to an interior room on the lowest floor of a building,” the NWS advises.

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The National Weather Service has issued a Flash Flood Watch for the D.C. area, including Fairfax County.

The alert will take effect at 2 p.m. tomorrow (Thursday) and last through 8 a.m. on Friday (June 2). Thunderstorms could bring up to four inches of rain in some locations.

Here is more from the alert:

* From Thursday afternoon through Friday morning.

* Several rounds of thunderstorms are expected Thursday afternoon through early Friday morning with localized rainfall rates of up to 1-2 inches per hour possible. Total rainfall amounts of 1-3 inches, with locally higher amounts up to 4 inches are possible.

* Heavy rain in short periods of time will cause the potential for streams and creeks to quickly rise out of their banks as well as the potential for flash flooding in urban areas.

“You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued,” the NWS says.

According to the NWS forecast for Tysons, the storms are expected to bring the area’s temperatures from the 90s back to the 60-70 degree range for the weekend, setting the stage for a mostly clear, sunny Independence Day.

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The rain just keeps coming.

While a Flash Flood Warning issued yesterday (Thursday) for the D.C. region, including Fairfax County, was canceled ahead of schedule at 7:15 p.m., the National Weather Service has extended the Flash Flood Watch that was set to end at midnight through today (Friday).

Issued at 3:03 a.m., the new alert will be in effect through this evening, as showers and thunderstorms are expected to bring two to four additional inches of rain to the area.

Here is the full alert:

…FLASH FLOOD WATCH IN EFFECT THROUGH THIS EVENING…

The National Weather Service in Sterling Virginia has expanded the

* Flash Flood Watch to include portions of Virginia and West Virginia, including the following areas: in Virginia, Clarke, Eastern Loudoun, Fairfax, Frederick VA, Page, Shenandoah, Warren and Western Loudoun. In West Virginia, Berkeley, Eastern Grant, Eastern Mineral, Eastern Pendleton, Hampshire, Hardy, Jefferson, Western Grant, Western Mineral and Western Pendleton.

* Through this evening

* Additional showers and thunderstorms capable of producing heavy rainfall amounts of 2 to 4 additional inches are expected to re-develop early this morning and persist into this afternoon.

* More heavy rainfall may cause additional flash flooding.

“A Flash Flood Watch means that conditions may develop that lead to Flash Flooding,” the NWS says. “Flash Flooding is a very dangerous situation. You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.”

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The Flash Flood Watch that took effect at noon today (Thursday) has now been upgraded to a Flash Flood Warning for Fairfax County.

The National Weather Service says an additional one to two inches of rain could fall in the affected areas, including Vienna, Falls Church, and Pimmit Hills, until 8:15 p.m.

Here is the full alert, which was issued at 5:05 p.m.:

* Flash Flood Warning for…
Central Fairfax County in northern Virginia…
Southeastern Loudoun County in northern Virginia…
The Western City of Alexandria in northern Virginia…
The City of Fairfax in northern Virginia…
The City of Falls Church in northern Virginia…

* Until 815 PM EDT.

* At 505 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly.

HAZARD…Life threatening flash flooding. Thunderstorms producing flash flooding.

SOURCE…Doppler radar.

IMPACT…Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses.

The NWS advises against traveling, noting that the majority of flood deaths occur in vehicles.

“A Flash Flood Warning means that flooding is imminent or occurring,” the NWS said. “If you are in the warned area move to higher ground immediately. Residents living along streams and creeks should take immediate precautions to protect life and property.”

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The National Weather Service has issued a Flash Flood Watch for the D.C. region, including Fairfax County, that will take effect at noon today (Thursday).

Set to expire at midnight, the advisory warns of the potential for two to four inches of rain to fall within a short period of time:

* From Noon EDT today through this evening

* A cold front will drop southward into the area today. This front will become the focus for slow moving thunderstorms this afternoon and evening. Because of the slow motion and ample moisture in the atmosphere, storms may drop 2 to 4 inches of rain a short period of time, resulting in flash flooding.

* Heavy rainfall in a short amount of time can result in rapid rises of water in streams, creeks, and urban areas.

The Baltimore-Washington NWS says the Flash Flood Watch is primarily in effect for the the northern and central parts of the region, but flooding could occur almost anywhere, and the risk could extend to tomorrow (Friday).

“A Flash Flood Watch means that conditions may develop that lead to Flash Flooding. Flash Flooding is a very dangerous situation,” the NWS said. “You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.”

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Updated at 4:35 p.m. — Vienna and Falls Church have now been added to the Severe Thunderstorm Warning, which has been extended to 5:15 p.m. today.

Earlier: Fairfax County and other areas in Northern Virginia have been put under a Severe Thunderstorm Warning on top of a Severe Thunderstorm Watch that will be in effect until 10 p.m.

Here is the full alert from the National Weather Service, which is scheduled to last until 4:45 p.m.:

At 405 PM EDT, a severe thunderstorm was located near Warrenton, moving northeast at 30 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…
Centreville, Reston, Annandale, South Riding, Herndon, Fairfax, Mantua, Dulles International Airport, Burke, Linton Hall, Oakton, Sterling, Chantilly, Merrifield, Bull Run, Haymarket, Arcola, Manassas, Sudley and Manassas Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

For your protection move to an interior room on the lowest floor of a building.

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Updated at 4:10 p.m. — The National Weather Service has now upgraded Fairfax County to a Severe Thunderstorm Warning, advising people to move to an interior room on the lowest floor of a building.

In effect until 4:45 p.m., the warning was issued at 4:01 p.m. after a severe thunderstorm was spotted near Middleburg. The storm was reportedly moving east at 30 miles per hour.

Here is the full alert:

The National Weather Service in Sterling Virginia has issued a Severe Thunderstorm Warning for…
Southeastern Loudoun County in northern Virginia…
Northwestern Fairfax County in northern Virginia…
Northeastern Fauquier County in northern Virginia…
Northwestern Prince William County in northern Virginia…

* Until 445 PM EDT.

* At 400 PM EDT, a severe thunderstorm was located near Middleburg, or 8 miles west of Brambleton, moving east at 30 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…
Reston, South Riding, Herndon, Vienna, Broadlands, Lowes Island, Brambleton, Dulles International Airport, Ashburn, Oakton, Sterling, Chantilly, Wolf Trap, Great Falls, Countryside, Middleburg, Arcola, Belmont, Aldie and Sterling Park.

Earlier: Fairfax County is currently under a Severe Thunderstorm Watch, with scattered showers anticipated throughout the D.C. area this afternoon.

The alert will be in effect until 8 p.m. The National Weather Service says that a thunderstorm could potentially hit after 5 p.m.

“Some storms could be severe, with large hail and damaging winds,” the NWS forecast for Tysons says.

With a 60% chance of precipitation, between a tenth and a quarter of an inch of rain could fall this afternoon, and another quarter to half inch could come in the evening.

Map via National Weather Service

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Updated at 6:05 p.m. — High winds have led to a surge in 9-1-1 and non-emergency public safety calls in Fairfax County.

The county is urging people to call 9-1-1 only if there is an emergency.

At least 76 traffic incidents have also been reported due to the ongoing weather, including events at the Route 50 and Prosperity Avenue intersection, according to Providence District Supervisor Dalia Palchik.

Earlier: More than 2,000 people in Tysons have lost power due to strong wind gusts that have pummeled Northern Virginia this afternoon (Friday).

According to Dominion Energy’s outage map, one of the biggest outages in the Tysons area is north of the Dulles Toll Road to the Potomac River, where 1,073 customers are currently without power. A crew has been dispatched to the area, but the cause of this outage is pending investigation.

An additional 1,084 people along Route 7 between I-495 and Spring Hill Road have also lost power. The outage has already been attributed to the wind storm, and a Dominion crew is awaiting assignment.

Two separate outages in the area around Wolf Trap National Park have collectively affected 1,195 customers.

Among those affected by the Route 7 outage is the Tysons District Taco (1500 Cornerside Blvd), which announced at 5:34 p.m. that it has closed until further notice after losing power.

Dominion Energy estimates that power could be restored throughout the area any time between 7 p.m. and midnight.

The National Weather Service issued a Wind Advisory that took effect at noon and was later upgraded to a High Wind Warning, which will remain in effect until 2 a.m. tomorrow (Saturday). Even though no rain or thunder was anticipated, the agency issued a Severe Thunderstorm Warning at 4:38 p.m., saying that wind gusts could reach up to 60 miles per hour.

“Damaging winds will cause some trees and large branches to fall,” the NWS said. “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.”

The Severe Thunderstorm Warning expired at 5:15 p.m., but local residents could be dealing with the storm’s impact well into this evening.

Image via Dominion Energy

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The National Weather Service has issued a Freeze Warning for Fairfax County, as still-strong winds bring an unseasonable chill to the region.

Issued around noon, the warning will take effect at 2 a.m. tomorrow (Friday) and last until 9 a.m. in parts of Northern Virginia and Maryland. According to the forecast for Tysons, tonight will bring west wind speeds of seven to 13 miles per hour, with gusts as high as 25 miles per hour.

Here is the full alert from the NWS:

…FREEZE WARNING IN EFFECT FROM 2 AM TO 9 AM EDT FRIDAY…

* WHAT…Sub-freezing temperatures around 30 degrees.

* WHERE…Portions of northern Maryland and northern and central Virginia near and west of Interstate 95, and portions of the eastern West Virginia panhandle.

* WHEN…From 2 AM to 9 AM EDT Friday.

* IMPACTS…Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

For precautionary measures, the NWS advises taking steps to protect plants and outdoor pipes from the cold.

“To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly,” the NWS said. “Those that have in-ground sprinkler systems should drain them and cover above-ground pipes to protect them from freezing.”

Image via NWS

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The National Weather Service has issued a Red Flag Warning for Fairfax County and the rest of the D.C. region today, signaling that weather conditions could breed fires.

The warning will be in effect from 11 a.m. to 6 p.m. It replaces a Fire Weather Watch that had been issued yesterday and was scheduled to begin at noon today.

“A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly,” the NWS says. “A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior.”

Here is more from the alert:

The National Weather Service in Baltimore MD/Washington has issued a Red Flag Warning for low humidity and gusty winds, which is in effect from 11 AM this morning to 6 PM EST this evening. The Fire Weather Watch is no longer in effect.

* WINDS…Southwest 15 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY…20 to 30 percent.

* IMPACTS…Critical fire weather conditions are likely to develop today. All outdoor burning is discouraged, as fires could rapidly spread and become uncontrollable.

* FUEL MOISTURE…5 to 8 percent for fine fuels.

Virginia already prohibits open-air burning before 4 p.m. for fires that are within 300 feet of the woods or dry grass which can carry the fire to the woods. The 4 p.m. Law takes effect every year from Feb. 15 to April 30, since the combination of elevated winds and low humidity traditionally results in increased numbers of fires, according to the Virginia Department of Forestry.

“You are allowed to burn between 4 p.m and midnight as long as you take proper care and precaution and attend your fire at all times,” the Department of Forestry says.

Evidence of the heightened risk of fires was on display last night in Vienna, where a house fire caused by improperly discarded smoking materials resulted in $116,400 in damages, the Fairfax County Fire and Rescue Department reported.

“These conditions are ripe for an improperly discarded cigarette/smoking material, thrown into mulch or other brush, to spark a significant fire that can then spread to homes and buildings,” the FCFRD said. “Many times, these fires have the potential to spread to homes and buildings that are close by.”

The fire department says cigarettes and other smoking materials should be discarded in an ashtray or bucket of sand, and butts and ashes should be completely doused with water before being thrown away. Cigarettes should never be disposed of in mulch, shrubbery, or potted plant soil, which can be highly flammable in dry weather.

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