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Raindrops in puddles (staff photo by Jay Westcott)

After a stormy night, more rain is on the way this afternoon (Friday), prompting the National Weather Service to issue a Flood Watch for Fairfax County and the rest of the D.C. region.

The alert will take effect at 3 p.m. and is currently set to continue until 11 p.m.

“Flash flooding caused by excessive rainfall is possible,” the alert says, projecting possible, localized rainfall totals of 2 to 4 inches.

The full alert from the NWS is below:

…FLOOD WATCH IN EFFECT FROM 3 PM EDT THIS AFTERNOON THROUGH THIS
EVENING…

* WHAT…Flash flooding caused by excessive rainfall is possible.

* WHERE…DC and portions of Maryland and Virginia, including the following areas: the District of Columbia. In Maryland, Anne Arundel, Calvert, Carroll, Central and Southeast Howard, Central
and Southeast Montgomery, Charles, Frederick MD, Northern Baltimore, Northwest Harford, Northwest Howard, Northwest Montgomery, Prince Georges, Southeast Harford, Southern Baltimore and St. Marys. In Virginia, Albemarle, Arlington/Falls Church/Alexandria, Culpeper, Eastern Loudoun, Fairfax, Greene, King George, Madison, Nelson, Northern Fauquier, Orange, Prince William/Manassas/Manassas Park, Rappahannock, Southern Fauquier, Spotsylvania, Stafford and Western Loudoun.

* WHEN…From 3 PM EDT this afternoon through this evening.

* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS…
– Showers and thunderstorms will develop this afternoon and may last into the evening. Any thunderstorms will be capable of producing very heavy rainfall, with localized totals of two to four inches possible. Much of the rain may fall within a one to three hour period, making rapid rises in creeks and streams possible, as well as flash flooding in urban areas.

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Condensation on a window at Patrick Henry Library in Vienna (file photo)

August has definitely arrived in the D.C. area, with another day in store for tomorrow (Thursday).

Like the rest of the region, Fairfax County will be under a Heat Advisory from 11 a.m. to 8 p.m.

According to the National Weather Service’s alert, the heat index — which combines heat and humidity — could reach up to 106 degrees Fahrenheit, enough to potentially lead to heat-related illnesses.

Fortunately, the NWS has some advice:

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances.

Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

Fairfax County has several facilities designated as cooling centers, including its two government centers, libraries, community centers, rec centers, and emergency shelters for those experiencing homelessness.

“Resting for just two hours in air conditioning can significantly reduce heat-related illnesses,” the county said in an emergency information blog post.

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The sun sets behind layers of buildings and clouds (Staff Photo by Jay Westcott)

Fairfax County and the surrounding area are under a Heat Advisory today (Thursday), as temperatures are expected to feel like it’s above 100 degrees outside.

The advisory begins at 11 a.m. and will remain in effect until 8 p.m. as temperatures in the upper 90s, combined with humidity, will have heat index values around 105 degrees. The hot temperatures and high humidity may cause heat illnesses to occur, the advisory warns.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.

Cooling centers are available in Fairfax County for those who need a place to escape the heat.

The National Weather Service also says there’s a chance for isolated showers and thunderstorms after 2 p.m.

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The National Weather Service issued a Severe Thunderstorm Watch in the area through 10 p.m. (via National Weather Service)

Fairfax County and areas nearby are under a Severe Thunderstorm Watch this evening.

The National Weather Service issued a Flood Watch earlier today (Monday), cautioning flooding may occur this evening, and a Severe Thunderstorm Watch is in effect until 10 p.m.

“Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations,” the Flood Watch reads. “Afternoon to evening showers and thunderstorms may produce very heavy rainfall capable of flash flooding. This could include multiple rounds of storms which would enhance the flood risk. Rainfall rates may reach 1 to 2 inches per hour, locally higher in spots. The D.C. and Baltimore metros will be the most susceptible given recent heavy rainfall the past couple of weeks.”

The National Weather Service advises residents to monitor forecasts and be prepared in case of flash floods.

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Lightning (via Breno Machado/Unsplash)

Fairfax County is under a Severe Thunderstorm Watch and Flood Watch as storms are expected in the region this evening.

The National Weather Service issued the watches this afternoon. They both expire at 10 p.m.

Rainfall could cause flash flooding in the area, according to the Flood Watch.

“Strong to severe thunderstorms will move across the region late this afternoon through the evening hours,” the Flood Watch says. “Heavy rain will accompany a number of these storms which may drop 1 to 2 inches of rainfall in an hour.”

A Hazardous Weather Outlook for the area also says the primary threats are wind gusts and large hail, with the possibility of an isolated tornado.

The full Flood Watch is below.

Event: Flood Watch
Alert:
…FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT…

* WHAT…Flash flooding caused by excessive rainfall continues to be possible.

* WHERE…Portions of DC, Maryland and northern Virginia, including the following areas: in DC, District of Columbia. In Maryland, Anne Arundel, Calvert, Central and Southeast Howard, Central and Southeast Montgomery, Charles, Northern Baltimore, Northwest Howard, Northwest Montgomery, Prince Georges, Southern Baltimore and St. Marys. In northern Virginia, Arlington/Falls Church/Alexandria, Fairfax, King George, Prince William/Manassas/Manassas Park and Stafford.

* WHEN…Until Midnight EDT tonight.

* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks.

* ADDITIONAL DETAILS…
– Strong to severe thunderstorms will move across the region late this afternoon through the evening hours. Heavy rain will accompany a number of these storms which may drop 1 to 2
inches of rainfall in an hour. Additionally, some regions could see repeat thunderstorm activity leading to an enhanced threat for flooding.
– http://www.weather.gov/safety/flood
Instructions: You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Photo via Breno Machado/Unsplash

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Rain collects around a storm drain (staff photo by Angela Woolsey)

A Flood Watch has been issued for Fairfax County and the rest of the D.C. area.

The alert will be in effect from 11 p.m. today (Friday) through 2 p.m. tomorrow (Saturday), according to the National Weather Service, which warns that “excessive” rainfall may lead to flash flooding.

Rain levels are expected to range from 1 to 7 inches, depending on the exact location.

Here is more from the NWS:

* WHEN…From 11 PM EDT this evening through Saturday afternoon.

* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS…
– Showers are expected with scattered thunderstorms late this evening into midday Saturday. Average rainfall amounts around 1 to 3 inches are expected, but localized amounts around 4 to 7 inches in heavier showers and thunderstorms. Rainfall amounts around 1 to 3 inches within an hour or two are possible in areas where the heaviest rainfall occurs. The best chance for the heaviest rainfall will be overnight into Saturday morning.

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A Flood Watch has been issued for the D.C. area on July 6 (via National Weather Service/Twitter)

Updated at 2:25 p.m. — The Flood Watch has been extended to 5 a.m. tomorrow (Thursday), per Fairfax County.

Earlier: A Flood Watch is on the horizon for much of the D.C. area, including Fairfax County.

The National Weather Service issued an alert at 5:20 a.m. today (Wednesday), warning that storms may lead to flash flooding starting around 3 p.m. The watch is currently set to remain in effect until 3 a.m. tomorrow.

Here is more from the alert:

* IMPACTS…Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise rapidly out of their banks. Flooding may occur quickly in poor drainage and urban areas.

* ADDITIONAL DETAILS…

– Multiple rounds of scattered to numerous showers and thunderstorms are likely this afternoon and tonight. The most likely time period for thunderstorms producing heavy rain and potential flash flooding is this evening, but thunderstorms could develop as early as this afternoon, and may linger well into the night. Several inches of rain is possible in a short period of time, which would cause rapid rises of water.

Despite the risk of rain, the region’s usual July heat and humidity are out in full force, with temperatures potentially reaching the low 90s. The heat index is expected to peak near 100 degrees, according to the Fairfax County Fire and Rescue Department.

“If possible, make sure to stay hydrated and in shaded or air-conditioned places. Also check on your friends and neighbors,” the department said.

Symptoms of heat-related illnesses include fainting or dizziness, muscle cramps, and nausea or vomiting.

Image via National Weather Service/Twitter

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Fairfax County is under a Severe Thunderstorm Watch (via National Weather Service)

The National Weather Service has issued a Severe Thunderstorm Watch in Fairfax County.

The watch went into effect at 3:07 p.m. and is expected to last until 7 p.m. this evening (Friday). The forecast says heavy rain and scattered storms are possible tonight.

Going into the holiday weekend, there’s also a possibility of thunderstorms tomorrow, and a chance of rain showers on Sunday. But it’s looking like the sun will pull through for a mostly sunny Fourth of July.

High temperatures through the weekend are expected to reach 90 degrees, and the lows are around 70 degrees.

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Flooding on Old Courthouse Road in Vienna (file photo)

Fairfax County is under a Flood Watch until midnight.

The National Weather Service issued the watch this morning, noting flash flooding caused by excessive rainfall is possible after 3 p.m.

Showers and thunderstorms are expected later this afternoon into the evening, according to the National Weather Service. There will be heavy rainfall at times, with predicted rainfall amounts of 1 to 3 inches within the span of a couple of hours, according to the Flood Watch.

A Hazardous Weather Outlook in the county states damaging winds and hail are also possible.

Showers and thunderstorms are likely, mainly between 3 PM and 11
PM. A Flash Flood Watch for potential flash flooding is in effect
near and west of Interstate 95 during this time. Isolated
instances of flooding can`t be ruled out further east.

In addition, a few storms may become severe with damaging wind
gusts and large hail. An isolated tornado can`t be ruled out.

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Lightning (via Breno Machado/Unsplash)

Updated at 6:50 p.m. — The Severe Thunderstorm Watch was canceled at 6:41 p.m., according to a National Weather Service alert.

Earlier: Fairfax County is under a Severe Thunderstorm Watch, and part of the county is also under a Severe Thunderstorm Warning.

The county is under a severe thunderstorm watch until midnight, according to the National Weather Service. There’s also a severe thunderstorm warning for west central Fairfax County, including Burke and Chantilly, until 6:15 p.m.

“Damaging winds will cause some trees and large branches to fall,” the warning reads. “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 watch was issued at 5:11 p.m. Ready Fairfax said to expect damaging winds and large hail. Isolated tornadoes are possible.

The full watch is below.

Event:
Severe Thunderstorm Watch
Alert:
SEVERE THUNDERSTORM WATCH 378 REMAINS VALID UNTIL MIDNIGHT EDT
TONIGHT FOR THE FOLLOWING AREAS
IN VIRGINIA THIS WATCH INCLUDES 22 COUNTIES
IN CENTRAL VIRGINIA
ALBEMARLE CITY OF CHARLOTTESVILLE
CITY OF FREDERICKSBURG GREENE
KING GEORGE NELSON ORANGE
SPOTSYLVANIA
IN NORTHERN VIRGINIA
ARLINGTON CITY OF ALEXANDRIA CITY OF FAIRFAX
CITY OF FALLS CHURCH CITY OF MANASSAS
CITY OF MANASSAS PARK CULPEPER
FAIRFAX FAUQUIER LOUDOUN
PRINCE WILLIAM STAFFORD
IN NORTHWEST VIRGINIA
MADISON RAPPAHANNOCK
THIS INCLUDES THE CITIES OF ALEXANDRIA, ARLINGTON, CHANTILLY,
CHARLOTTESVILLE, CROZET, CULPEPER, DAHLGREN, FAIRFAX,
FALLS CHURCH, FALMOUTH, FREDERICKSBURG, GORDONSVILLE, GREENFIELD,
HERNDON, LEESBURG, MADISON, MANASSAS, MANASSAS PARK, MCLEAN,
ORANGE, RESTON, SPOTSYLVANIA COURTHOUSE, STANARDSVILLE, STERLING,
WARRENTON, WASHINGTON, AND WOODBRIDGE.
Instructions:

Target Area:
Albemarle
Arlington
City of Alexandria
City of Charlottesville
City of Fairfax
City of Falls Church
City of Fredericksburg
City of Manassas
City of Manassas Park
Culpeper
Fairfax
Fauquier
Greene
King George
Loudoun
Madison
Nelson
Orange
Prince William
Rappahannock
Spotsylvania
Stafford

Photo via Breno Machado/Unsplash

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