watch

UPDATED: Rainy Week on Tap for Arlington

By ARLnow.com

Update at noon — The Flash Flood Watch has been cancelled.

Earlier: Arlington County is under a Flash Flood Watch through Monday evening.

The watch, which went into effect at 8 a.m., warns of the possibility of heavy downpours that could cause sudden flooding.

From the National Weather Service:

…FLASH FLOOD WATCH REMAINS IN EFFECT FROM 8 AM EDT MONDAY THROUGH MONDAY AFTERNOON…

The Flash Flood Watch continues for

* A portion of northern Virginia, including the following areas: Arlington/Falls Church/Alexandria, Fairfax, Prince William/Manassas/Manassas Park and Southern Fauquier.

* From 8 AM EDT Monday through Monday afternoon.

* Showers and scattered thunderstorms are expected to develop just after daybreak Monday morning and persist through the first half of the afternoon. The stronger thunderstorms may be capable of producing 2 to 4 inches of rain per hour.

* This much rain in a short amount of time would result in rapid rises on streams and creeks and in urbanized and poor drainage areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Today’s flooding potential follows flash flooding in parts of Arlington early Sunday morning. Mobile phones buzzed with a Flash Flood Warning after midnight, as storms dumped torrential rainfall at a rate of upwards of 6 inches per hour.

Parts of I-395 in Arlington became inundated with high standing water. ARLnow has also heard reports of flooded areas along Columbia Pike.

Alexandria was particularly hard-hit by the flash flooding, with extensive flood damage reported in parts of the Del Ray neighborhood.

Today’s rain is just the start of what’s expected to be a busy week. More downpours, plus the remnants of Tropical Storm Fred, will bring additional flood threats through Thursday, forecasters say.

Arlington Is Under Another Severe Thunderstorm Watch

By ARLnow.com

Another day, another storm watch

Arlington and the entire D.C. area is under a Severe Thunderstorm Watch. under 8 p.m. Forecasters say storms packing frequent lightning, hail, and damaging wind gusts up to 70 mph are possible later today.

More from the National Weather Service, via Twitter:

Flickr pool photo by Joseph Gruber

JUST IN: Arlington Under Severe Thunderstorm Watch Today

By ARLnow.com

After last night’s strong storms that knocked out power to more than 5,000 homes and businesses, more stormy weather might be on the way.

The National Weather Service has issued a Severe Thunderstorm Watch for Arlington and much of the region.

Damaging winds, frequent lightning and hail are possible from storms later today. The was is in effect until 9 p.m.

NEW: Heat Advisories Issued for Arlington and D.C. Area

By ARLnow.com

Arlington County will be under a Heat Advisory on Wednesday afternoon and an Excessive Heat Watch for Thursday afternoon.

The National Weather Service said today that high temperatures and humidity will reach dangerous levels as the week goes on. Heat index values of 105-110 degrees are possible on Thursday.

Friday is expected to be nearly as hot, but no heat advisories have been issued yet for that day. The area will cool to more moderate summer temperatures this weekend.

More on the heat advisory and watch from NWS:

…HEAT ADVISORY IN EFFECT FROM NOON TO 8 PM EDT WEDNESDAY…
…EXCESSIVE HEAT WATCH IN EFFECT FROM THURSDAY AFTERNOON THROUGH
THURSDAY EVENING…

* WHAT…For the Heat Advisory, heat index values will range from around 100 degrees west of Interstate 95 to around 105 degrees near and east of Interstate 95. For the Excessive Heat Watch, dangerously hot conditions are possible with heat indices possibly ranging from around 105 degrees west of Interstate 95 to around 110 degrees near and east of Interstate 95.

* WHERE…The Washington, Baltimore, and Fredericksburg areas, central and southern Maryland, northern Virginia, and the eastern panhandle of West Virginia.

* WHEN…For the Heat Advisory, from noon to 8 PM EDT Wednesday. For the Excessive Heat Watch, from Thursday afternoon through early Thursday evening.

* IMPACTS…Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

Monitor the latest forecasts and warnings for updates on this situation. Be prepared to 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. This is especially true during warm or hot weather when car interiors can reach lethal temperatures in a matter of minutes.

Arlington Under Severe Thunderstorm Watch Today

By ARLnow.com

A Severe Thunderstorm Watch was just issued for Arlington and parts of the D.C. area.

Arlington, Alexandria, Falls Church and Fairfax County are among the Northern Virginia locales under the watch, which is in effect until 8 p.m.

D.C. and points north and east are also included in the watch.

Storms packing damaging winds are possible as a cold front crosses the area, forecasters say. On the positive side, the cold front will bring lower humidity levels and should help clear up some of the wildfire-induced haze that has the Washington region under a Code Orange Air Quality Alert today.

More from the National Weather Service:

 

UPDATED: Arlington Under Flash Flood, Severe Thunderstorm Watches

By ARLnow.com

Update at 1:50 p.m. — In addition to the Flash Flood Watch, a Severe Thunderstorm Watch was just issued for the area. Damaging winds, hail and torrential downpours are possible, forecasters say.

Earlier: Storms packing heavy downpours could cause sudden flooding later today.

The National Weather Service has issued a Flash Flood Watch for Arlington and much of the region. The watch is in effect starting at 2 p.m. this afternoon, until early morning Sunday.

More from NWS:

…FLASH FLOOD WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH LATE
SATURDAY NIGHT…

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Watch for portions of DC, Maryland and northern Virginia, including the following areas: in DC, District of Columbia. In Maryland, Anne Arundel, Cecil, Central and Southeast Howard, Central and Southeast Montgomery, Northern Baltimore, Northwest Harford, Prince Georges, Southeast Harford and Southern Baltimore. In northern Virginia, Arlington/Falls Church/Alexandria and Fairfax.

* From Saturday afternoon through late Saturday night.

* Multiple rounds of thunderstorms are expected Saturday afternoon through Saturday evening, potentially lingering into early Sunday morning. Localized rainfall amounts of up to 1-2 inches per hour will be possible at times. Total rainfall amounts of 1-3 inches, with locally higher amounts 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.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

JUST IN: Arlington Now Under Severe Thunderstorm and Flash Flood Warnings

By ARLnow.com

Update at 4:15 p.m. — The earlier severe thunderstorm watch and warning have both been cancelled.

Update at 3:40 p.m. — Just over 1,400 Dominion customers in Arlington are without power, according to preliminary numbers from the power company’s website.

Update at 3:30 p.m. — A 58 mph wind gust was recorded at Reagan National Airport, according to the National Weather Service. Some downed trees and power outages are being reported around Arlington as the storm dies down.

Update at 3:20 p.m. — A Flash Flood Warning has been issued amid ongoing heavy rains. From NWS:

BULLETIN – EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
314 PM EDT THU JUL 1 2021

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* FLASH FLOOD WARNING FOR… DISTRICT OF COLUMBIA… ARLINGTON COUNTY IN NORTHERN VIRGINIA… EAST CENTRAL FAIRFAX COUNTY IN NORTHERN VIRGINIA… THE CITY OF ALEXANDRIA IN NORTHERN VIRGINIA… THE CITY OF FALLS CHURCH IN NORTHERN VIRGINIA…

* UNTIL 615 PM EDT.

* AT 314 PM EDT, DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. BETWEEN 0.5 AND 1 INCH OF RAIN HAS FALLEN. ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE WARNED AREA. FLASH FLOODING IS ONGOING OR EXPECTED TO BEGIN SHORTLY.

HAZARD…LIFE THREATENING FLASH FLOODING. THUNDERSTORMS PRODUCING FLASH FLOODING.

SOURCE…RADAR.

IMPACT…LIFE THREATENING FLASH FLOODING OF CREEKS AND STREAMS, URBAN AREAS, HIGHWAYS, STREETS AND UNDERPASSES.

Update at 2:55 p.m. — Arlington is now under a Severe Thunderstorm Warning. Take cover! 

Update at 12:45 p.m. — A Severe Thunderstorm Watch has now been issued for the region.

Earlier: It’s dry now, but expect rain and storms later this afternoon and evening.

The National Weather Service has issued a Flash Flood Watch for Arlington and other parts of the region, starting at 2 p.m. and running through Friday morning. Forecasters are also warning that storms may pack damaging winds in addition to downpours.

More from the National Weather Service:

The Flash Flood Watch continues…

* From 2 PM EDT this afternoon through Friday morning.

* Several rounds of thunderstorms are expected this 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.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

UPDATED: Severe Thunderstorm Warning Issued for Arlington

By ARLnow.com

Update at 10:50 p.m. — The earlier Flash Flood Watch has been upgraded to a Flash Flood Warning. Flooding near streams and in low-lying areas is imminent. The warning is in effect until 1:45 a.m.

From the National Weather Service:

* AT 1049 PM EDT, DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. BETWEEN 1 AND 2 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.

* SOME LOCATIONS THAT MAY EXPERIENCE FLASH FLOODING INCLUDE… ARLINGTON… ALEXANDRIA… CENTREVILLE… ROCKVILLE… BETHESDA… RESTON… BOWIE… ANNANDALE… CLINTON… SPRINGFIELD… COLLEGE PARK… SOUTH RIDING… FORT WASHINGTON… HERNDON… GREENBELT… FAIRFAX… LANGLEY PARK… BELTSVILLE… FORT HUNT… VIENNA…

PRECAUTIONARY/PREPAREDNESS ACTIONS…

TURN AROUND, DON’T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD DEATHS OCCUR IN VEHICLES.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. 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.

Update at 10:40 p.m. — The county is also under a Flash Flood Watch due to heavy downpours.

1025 PM EDT MON JUN 14 2021

…FLASH FLOOD WATCH IN EFFECT UNTIL 2 AM EDT TUESDAY…

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* FLASH FLOOD WATCH FOR PORTIONS OF DC…MARYLAND AND NORTHERN VIRGINIA, INCLUDING THE FOLLOWING AREAS: IN DC, DISTRICT OF COLUMBIA. IN MARYLAND, ANNE ARUNDEL, CENTRAL AND SOUTHEAST MONTGOMERY, CHARLES AND PRINCE GEORGES. IN NORTHERN VIRGINIA, ARLINGTON/FALLS CHURCH/ALEXANDRIA AND FAIRFAX.

* UNTIL 2 AM EDT TUESDAY

* THUNDERSTORMS WITH INTENSE RAINFALL WILL CAUSE RAINFALL AMOUNTS AROUND 1-2 INCHES IN LOCALIZED AREAS WITHIN AN HOUR.

* 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.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLASH FLOOD WARNINGS BE ISSUED.

Update at 10:35 p.m. — The remainder of Arlington is now under a Severe Thunderstorm Warning.

Update at 10:15 p.m. — A portion of Arlington is now under a Severe Thunderstorm Warning as a line of storms approach.

From the National Weather Service:

1011 PM EDT MON JUN 14 2021

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING…

* UNTIL 1100 PM EDT.

* AT 1011 PM EDT, A SEVERE THUNDERSTORM WAS LOCATED NEAR SOUTH RIDING, MOVING EAST AT 35 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… ARLINGTON, ALEXANDRIA, CENTREVILLE, ANNANDALE, SPRINGFIELD, SOUTH RIDING, FAIRFAX, VIENNA, GROVETON, FALLS CHURCH, HUNTINGTON, MANTUA, FORT BELVOIR, BURKE, OAKTON, CHANTILLY, LINCOLNIA, FRANCONIA, MERRIFIELD AND NEWINGTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A BUILDING.

Earlier: Arlington and the D.C. area is under a Severe Thunderstorm Watch until 2 a.m.

Strong storms are expected across the region tonight, potentially packing winds gusts that can down trees and power lines.

More from the National Weather Service:

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE ENTIRE AREA UNTIL 2 AM. DAMAGING WIND GUSTS AND LARGE HAIL ARE THE PRIMARY THREATS, AND AN ISOLATED TORNADO IS POSSIBLE.

AN ISOLATED INSTANCE OF FLASH FLOODING IS POSSIBLE THIS EVENING DUE TO HEAVY RAINFALL ASSOCIATED WITH THUNDERSTORMS.

Flickr pool photo by John Sonderman

Arlington Under Flash Flood Watch Today

By ARLnow.com

A cold front is likely to bring slow-moving thunderstorms and downpours to the D.C. area later today.

The National Weather Service has issued a Flash Flood Watch, which takes effect at noon, cautioning of the possibility of 2-4 inches of rain falling in a short period of time. Such rainfall could cause flash flooding, as happened nearly two years ago.

More from NWS:

…FLASH FLOOD WATCH IN EFFECT FROM NOON EDT TODAY THROUGH THIS EVENING…

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Watch for portions of DC…Maryland…Virginia and West Virginia…

* 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.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

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

Severe Thunderstorm Watch Issued for Arlington

By ARLnow.com

Arlington County and the D.C. area is under a Severe Thunderstorm Watch tonight.

The watch is in effect until 9 p.m. Forecasters say strong storms packing quarter-sized hail and strong winds are possible.

“The main threat is damaging wind gusts, though a tornado cannot be ruled out,” the National Weather Service says.

More from NWS:

Severe Thunderstorm Watch Issued for Arlington

By ARLnow.com

Arlington County and much of the region is now under a Severe Thunderstorm Watch.

The watch is in effect until 10 p.m. tonight. Forecasters say strong storms with damaging winds are possible this afternoon and tonight.

From the National Weather Service:

URGENT – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 206
NWS Storm Prediction Center Norman OK
245 PM EDT Wed May 26 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch […]

* Effective this Wednesday afternoon and evening from 245 PM until 1000 PM EDT.

* Primary threats include…
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1 inch in diameter possible

SUMMARY…Thunderstorms are expected to continue to develop over parts of Pennsylvania and spread eastward across the watch area through the evening hours. Damaging winds will be the main threat with the strongest cells. […]

PRECAUTIONARY/PREPAREDNESS ACTIONS…

REMEMBER…A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes.

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