Tysons, VA

The eastern portion of Fairfax County and the City of Falls Church are under a Flood Warning today (Tuesday) as Isaias approaches the D.C. area as a tropical storm.

The warning went into effect shortly after 7 a.m. and will last until 1 p.m. The National Weather Services says that McLean, Vienna and Falls Church can expect flooding.

More from NWS:

At 700 AM EDT, Doppler radar and automated rain gauges indicated that heavy rain was falling over the area. The heavy rain will cause flooding. Up to one inch of rain has already fallen. Additional rainfall amounts of several inches are possible, and Flash Flood Warnings could be required later today. For now, though, flooding will be relatively slow to develop…

A Flood Warning means that flooding is imminent or occurring. All interested parties should take necessary precautions immediately.

The Tysons area is also under a Flash Flood Watch until 4 p.m. and a Tropical Storm Warning.

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Updated 11:55 a.m. — The National Weather Service placed Fairfax County under a Tropical Storm Warning shortly after 11 a.m. today. “A Tropical Storm Warning means tropical storm-force winds are expected somewhere within this area within the next 36 hours,” according to NWS.

Earlier: As Tropical Storm Isaias hits the East Coast, forecasters warn that the Tysons area could see flash flooding early this week.

The Tysons area will be under a Flash Flood Watch from 11 p.m. tonight to the same time Tuesday night. “Moderate coastal flooding is possible at times of high tide Tuesday as Tropical Storm Isaias makes its closest approach to the area,” the National Weather Service said.

NWS says that widespread rainfall between 3-6 inches is expected, with possibly more in certain areas.

A Coastal Flood Watch will also be in effect from Tuesday morning to Wednesday.

“Rainfall associated with Tropical Storm Isaias is expected to start spreading northward late Monday night and continue into Tuesday evening,” according to NWS.

Forecasters encourage people to protect flood-prone property as soon as possible and monitor the weather. People should not attempt to drive through water if they don’t know how deep it is.

 

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Portions of Northern Virginia including the Tysons area will be under a Flash Flood Watch starting Tuesday afternoon.

The National Weather Service said that the watch will be in effect from 3-11 p.m. Forecasters say that storms and gusty wind are expected today.

More from NWS:

A slow-moving cold front will intersect a hot and humid air mass resulting in scattered to numerous showers and thunderstorms late this afternoon and evening. Multiple rounds of thunderstorms are possible, which could result in isolated rainfall amounts of 2 to 3 inches in a short amount of time. These rainfall amounts may result in rapid rises of water on small streams and creeks, as well as in urban and poor drainage areas.

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Updated at 3:35 p.m. — NWS has issued a Flash Flood Warning for the Tysons area. The warning is in effect until 6:30 p.m. 

More from NWS:

At 330 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the area. Up to two inches of rain have already fallen in portions of the area, and rainfall amounts around 2 to 3 inches are expected within one hour. Flash flooding is ongoing or expected to begin shortly.

Earlier: Tysons and surrounding areas are under a Flash Flood Watch today.

The National Weather Service issued the watch shortly after 1:30 p.m. The watch will be in effect until 11 p.m.

According to NWS, heavy rainfall of 1-3 inches is expected to fall within an hour, possibly leading to flash flooding in local areas.

The Tysons area is also under a Heat Advisory and Severe Thunderstorm Watch this afternoon and evening.

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Updated 3:10 p.m. — NWS issued a Severe Thunderstorm Warning shortly after 3 p.m. for the area. “Severe thunderstorms were located along a line extending from near Leesburg to Middleburg to near Hume, moving east at 10 mph,” according to NWS.

Earlier: A Severe Thunderstorm Watch is in effect for Fairfax County and surrounding areas today (Wednesday).

The National Weather Service issued the watch at noon. The watch will be in effect until 7 p.m.

The Tysons-area is also under a Heat Advisory until 8 p.m. Forecasters recommend that people stay out of the sun, drink lots of fluids and seek air-conditioned spaces.

File photo

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The National Weather Service has issued a Severe Thunderstorm Warning for Fairfax County.

The warning went into effect at 3:30 p.m. today (Monday) and will be in effect until 4:15 p.m. NWS said a severe thunderstorm near Dulles International Airport was moving northeast at 15 miles per hour at 3:30 p.m.

NWS said that damaging winds with up to 60 mph gusts and quarter size hail could cause trees and power lines to fall.

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

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The National Weather Service has issued a Severe Thunderstorm Watch for Fairfax County and surrounding jurisdictions.

The watch went into effect right after 3 p.m. and will last until 10 p.m.

The NWS says that damaging winds along with large hail are possible tonight. People can expect showers and thunderstorms Friday afternoon and evening, with possible flooding incidents.

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Updated at 1:35 p.m. — The NWS issued a Flood Warning for areas in central Fairfax County, including Merrifield, Tysons Vienna. The warning is set to last until 7 p.m. 

“Doppler radar and automated rain gauges indicated that moderate to heavy rain was falling over the area. The heavy rain will cause flooding,” according to NWS. “Up to 1 inch of rain has already fallen. Additional rainfall amounts of around an inch are possible.”

Earlier: A Flood Watch will be in effect in Fairfax County for today (Thursday), starting at 10 a.m.

The National Weather Service says that heavy rain is expected this afternoon, followed by a “strong cold front” in the early evening.

“Widespread rainfall totals of 1.5-2.5 inches are expected with locally higher amounts of three inches or more possible,” according to NWS. The rain may likely cause small streams and the primary downstream areas of rivers to flood, along with possible, moderate river flooding.

NWS suggests that people who live near flood zones prepare for flooding.

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People out early Wednesday morning should keep an eye out for frost and frozen surfaces.

The National Weather Service has issued a Freeze Warning that will be in effect from 2-8 a.m. Wednesday.

More from NWS:

* WHAT…Sub-freezing temperatures near 30 expected.

* WHERE…Portions of The District of Columbia, central, northern and southern Maryland and central and northern Virginia.

* WHEN…From 2 AM to 8 AM EDT Wednesday.

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

People with plants outside should cover them.

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

Photo by Markus Spiske on Unsplash

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Updated 3:30 p.m. — The National Weather Service cancelled the Tornado Watch for Fairfax County around 3:20 p.m., the county tweeted. 

Earlier: Fairfax County is currently under a Tornado Watch today (Monday).

The National Weather Service said the watch will be in effect until 6 p.m.

The area is also under a Wind Advisory until 6 p.m. People can expect storms throughout the day.

Fairfax County is also under a Severe Thunderstorm Warning until 2:30 p.m.

 

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