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Posted at 11:00 PM ET, 07/23/2008

Update: Flooding Concerns Continue

By Capital Weather Gang

*Flash Flood Warning through 12:30 a.m. for D.C., central and eastern Fairfax County, Prince George's County, eastern Prince William County and Stafford County.*

11 p.m. update: Showers and thunderstorms continue to produce moderate to sometimes heavy rain across the metro area east of Loudoun County. Flooding is a significant threat over the next few hours in areas covered by the Flash Flood Warning, as showers and storms move from southwest to northeast, repeatedly dousing the same areas. The whole line of precipitation will drift slowly eastward, with the threat of flooding diminishing from west to east after about 1 a.m.

The National Weather Service warns: BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

Follow tonight's storms using the Severe Weather Tracking Station below, which includes latest radar and a live display of any severe warnings issued by the National Weather Service. Below that is the forecast through tomorrow. Also, comment with storm reports from your location.

Severe Weather Tracking Station
Warning Text: DC | MD | VA
Radar: Latest D.C. area radar loop from Weather Underground. Click on image to expand, zoom and for other options. Refresh page to update.
LWX Warnings
Warnings: Severe warnings from the National Weather Service. Updates without refresh (most browsers). Click label in legend for detailed warning text.

Tonight: Showers and thunderstorms are likely, especially between 7 p.m. and 3 a.m. Some storms could produce heavy rain and dangerous lightning, and a few could contain hail and damaging winds. Showers and storms should diminish toward morning, replaced by partial clearing. Lows in the mid 60s to near 70.

Tomorrow: Early-morning clouds and a lingering shower or storm, especially east of the District, will give way to increasing sunshine by late morning. West of the Chesapeake Bay, the bulk of the day should be partly to mostly sunny with highs in the mid 80s. You can thank a breeze from the northwest, near 10 mph, for the less-humid air.

See Dan's full forecast through the weekend. Continue reading for expired alerts/updates.

9:30 p.m. update: Most of the severe thunderstorm warnings have been allowed to expire but heavy rain-producing storms remain along and east of I-95.

In its 9 p.m. flood watch statement, the National Weather Service cautioned:

A LINE OF STRONG THUNDERSTORMS PRODUCING INTENSE RAINFALL RATES WILL LIKELY REMAIN NEARLY STATIONARY ALONG THE INTERSTATE 95 CORRIDOR OVERNIGHT. IN ADDITIONAL...INDIVIDUAL STORMS ALONG THIS LINE ARE LIKELY TO MOVE REPEATEDLY OVER THE SAME AREA. THIS WILL LIKELY RESULT IN FLASH FLOODING...ESPECIALLY IN URBANIZED AREAS. GIVEN HIGH MOISTURE CONTENT PRESENT OVER THE AREA...INTENSE RAINFALL RATES OF TWO INCHES PER HOUR ARE POSSIBLE. RAINFALL TOTALS OF TWO TO FOUR INCHES OF RAIN WITH ISOLATED AMOUNTS OF FIVE TO SIX INCHES ARE POSSIBLE OVERNIGHT.

9:00 p.m. update: Severe Thunderstorm Warnings remain in effect for most areas inside the beltway (until 9:30 p.m.) but the storms are gradually clearing locations west of the District and moving into the eastern suburbs. Lookout southeast D.C. and Prince George's and Anne Arundel counties -- you will experience some very heavy rain and some gusty winds in the next hour or so.

8:35 p.m. update: A Severe Thunderstorm (until 9:30 p.m.) and Flash Flood Warning (until 12:30 a.m.) are now in effect for much of immediate metro area (inside the beltway). Very heavy rain, dangerous lightning and damaging winds are possible with these storms. The heaviest rainfall amounts are likely to occur along and just east of I-95 where two lines of storms are converging (one from the southeast and one from the west).

8:15 p.m. Alert: Tornado Warning (affecting parts of western suburbs in Va.) has expired. Storm is no longer rotating. However, a Severe Thunderstorm Warning remains in effect for a good portion of Fairfax County until 8:45 p.m. This storm has a history of producing damaging wind and hail. And another warning is out for a severe storm in eastern Charles and Prince George's County.

8:00 p.m. Alert: The Severe Thunderstorm Warning in Charles County has been extended northward into southeastern Prince George's County and is in effect until 8:30 p.m.

7:40 p.m. Alert: Tornado Warning in effect for Manassas City and parts of Prince William (central), Loudoun (south central), Fauquier (east central) and Fairfax (west central) Counties until 8:15 p.m. A rotating storm was indicated on radar near Haymarket, Va...moving east. If you're in this vicinity, take cover. Locations in the direct path of this storm include Bull Run and Centreville.

7:40 p.m. Alert: Severe Thunderstorm Warning for Charles and St Mary's Counties in effect until 8:15 p.m. Very heavy rain, damaging winds (in excess of 60 mph) and hail are possible with this storm.

By Capital Weather Gang  | July 23, 2008; 11:00 PM ET
Categories:  Updates  
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Comments

Tornado warning just issued for the area of Rappahanock County near Sperryville; the (Doppler indicated) tornado is heading east.

Posted by: Guillemot | July 23, 2008 6:24 PM | Report abuse

Unless I am missing something, it seems like these are going to slide north and west of the immediate metro area. It really looks like the classic DC hole. So what am I missing? I really expected more widespread rain starting to pop on the radar by this time.

Posted by: Southside FFX | July 23, 2008 7:06 PM | Report abuse

Same here. Another busted forecast. They (not this site) were calling for one to two inches. I haven't seen my first raindrop.

Posted by: Anonymous | July 23, 2008 7:07 PM | Report abuse

I would have thought the Flood Watch could be cancelled now, without the NWS losing too much face...we're still looking for our fifth drop of rain on the day in G'town.

Posted by: Max | July 23, 2008 7:08 PM | Report abuse

Heads Up:

The National Weather Service in Sterling Virginia has issued a

* Tornado Warning for...
city of Manassas in northern Virginia...
City of Manassas Park in northern Virginia...
west central Fairfax County in northern Virginia...
east central Fauquier County in northern Virginia...
extreme south central Loudoun County in northern Virginia...
central Prince William County in northern Virginia...

* until 815 PM EDT

* at 729 PM EDT...National Weather Service Doppler radar indicated a
severe thunderstorm with strong rotation near Haymarket...moving
east at 20 mph.

* Locations impacted include...
Haymarket...
Bull Run...
Centreville...

Lat...Lon 3888 7741 3873 7737 3871 7770 3881 7772
time...Mot...loc 2332z 260deg 18kt 3876 7767

Posted by: Jeff in Fairfax City | July 23, 2008 7:40 PM | Report abuse

this is not a bust torado warning thunderstomrms forming right now people.

Posted by: josh | July 23, 2008 7:46 PM | Report abuse

Storms starting to form south of DC. Not a bust yet. Give it time.

Posted by: bdevil02 | July 23, 2008 7:50 PM | Report abuse

looks like the worst of it is headed straight for the DC metro area. starting to look pretty ominous here.

Posted by: Dan in mcLean | July 23, 2008 7:51 PM | Report abuse

Heavy rain just started to fall in Lake Ridge...no thunder or high winds...yet...

Posted by: meta | July 23, 2008 7:51 PM | Report abuse

Looks like a heavy band is setting right on top of Lake Ridge and points north and south.

Posted by: Anonymous | July 23, 2008 8:02 PM | Report abuse

16 drops of rain in Lorton! I repeat, 16 drops of rain!

Posted by: Southside FFX | July 23, 2008 8:02 PM | Report abuse

Are you all kidding me? I poked my head upstairs where I have a direct view from the basement stairs out the sliding glass door on the 2nd level, which faces south toward Manassas, and it is UGLY. I'm in Centreville, 10 miles due South of Dulles on Rt 28. Dark Gray/Black mass fast moving with the white'ish whisps. Thunder is starting to pick up now right overhead.

Glad I had my 20 year old cheap bradford pear removed from the front. We've already lost others in the neighborhood with storms.

Posted by: boboman | July 23, 2008 8:03 PM | Report abuse

Funnel cloud reported in Centreville

Posted by: bdevil02 | July 23, 2008 8:09 PM | Report abuse

meta, how's it looking in Lake Ridge? Staying at my parents place in Tysons tonite - no rain here yet - but its on its way (thunder in the distance)..

Posted by: Anonymous | July 23, 2008 8:10 PM | Report abuse

I stand corrected...who-unzipped-the-sky rain is lashing against my windows amidst the sound of low thunder, and my teenage son just excitedly ran into show me a photo of wisping clouds.

Posted by: meta | July 23, 2008 8:11 PM | Report abuse

This radar is absolutely amazing. Its like two separate severe bands converging right on top of PG county. Hah.

Posted by: jtf | July 23, 2008 8:12 PM | Report abuse

arlington co reports severe t'storm warning: "this is a dangerous storm!"

Posted by: jeffc | July 23, 2008 8:12 PM | Report abuse

Wow! We are located right off rte 28 near Compton Rd. in Centreville. Suddenly got very dark and incredibly windy with pounding rain, not in a good position to view the sky. Seems to be settling a little now. Lightning is popping with distant thunder.

Posted by: Christina in Centreville | July 23, 2008 8:12 PM | Report abuse

Not surprised. The thunder sounds different, loud but more muffled, or something like that. Deeper, maybe. But so far, have electricity. But there are actually 2 Centrevilles, South of 29 and North of 29. My sister and I live 3.5 miles apart and don't usually get the same thing. Hearing a lot of rain, but nothing that sounds like hail yet.

Posted by: boboman | July 23, 2008 8:13 PM | Report abuse

Rain dying down a bit in Sully Station (just NW of I-66/US-29 interchange). Had a lot of rain and frequent lightning. My wife was driving home down I-66 from Wegmans and could see two cells combining--probably where the funnel cloud came from.

Posted by: John | July 23, 2008 8:15 PM | Report abuse

Forgot to add--no hail in Sully Station (what boboman would refer to as "north Centreville"). NWS just let the tornado warning expire--they lost the circulation.

Posted by: John | July 23, 2008 8:17 PM | Report abuse

We had no hail here in SW Centreville, just a little tense for a while. Glad the crape myrtles held!

Posted by: Christina in Centreville | July 23, 2008 8:19 PM | Report abuse

looks like central and eastern prince william is covered completely with a solid line of heavy, heavy rain.

Posted by: Zwther | July 23, 2008 8:19 PM | Report abuse

looks like the cell is getting smaller (?) from radar. who knows. it's still looking pretty bad here. no rain yet but it's getting VERY dark

Posted by: dan in mclean | July 23, 2008 8:22 PM | Report abuse

Nexrad precip totals are indicating already 1.5 - 2.0 inches of rain having already fallen in Lake Ridge - and still coming in buckets.. no end in sight yet.

Posted by: Anonymous | July 23, 2008 8:22 PM | Report abuse

We're up to 40 rain drops now - I'm considering sand bags.

(This is of course all toungue in cheek. I'm just bugged because 1-2 inches were advertised, and we ain't gonna get it. I'm sick of watering all my plants.)

Posted by: Southside FFX | July 23, 2008 8:24 PM | Report abuse

It's now raining here on the Bethesda/NW DC border, and I saw a few flashes of lightning, although no thunder so far...

Posted by: Anonymous | July 23, 2008 8:24 PM | Report abuse

The first thunder is heard in Silver Spring. Looking at the map above with the three lines of storms getting closer and closer to each other, I don't know whether to be concerned or fascinated.

Posted by: Murre | July 23, 2008 8:25 PM | Report abuse

John,

Because not all of us live in Sully Station! :)

Quiet now, still looks dark to the south. Glad there was no hail.

Posted by: boboman | July 23, 2008 8:25 PM | Report abuse

Here in Alexandria, we look like we're about to get "crushed" by two lines of storms converging and moving up fro the south. Pretty freaky looking outside.

Posted by: alexandria | July 23, 2008 8:28 PM | Report abuse

Posted by: Model Monkey | July 23, 2008 8:29 PM | Report abuse

Southside FFX, u should be seeing more action very soon..

Posted by: Zwther | July 23, 2008 8:29 PM | Report abuse

steady heavy rain for past 20 mins in Clarendon, occasional thunder, relatively light winds

Posted by: jeffc | July 23, 2008 8:30 PM | Report abuse

Oh, and not much here in Sterling. Breezy with moderate rain and some thunder and lightning.

Posted by: Model Monkey | July 23, 2008 8:31 PM | Report abuse

Rain is picking up and lighting is closing in here in Springfield, NEXRAD shows that we're about to get crushed as in Alexandria..

Posted by: Mark | July 23, 2008 8:32 PM | Report abuse

Here in Georgetown, we've got a real drencher going on. It snuck up really fast (the cat is stuck outside, he normally makes it home just before the raindrops fall) and is now on the verge of overwhelming my gutters.

I've seen far worse, but, yep, this is a sound rain.

Posted by: Georgetwoner | July 23, 2008 8:33 PM | Report abuse

Stopped raining here in Vienna. Heavy 4-5 mins of rain and that was it.

Posted by: Jaime, Vienna | July 23, 2008 8:35 PM | Report abuse

Heavy rain, not totally overwhelming the gutters, tapering off now. Thunder still sounding every 10 seconds or so. It's not all that dark outside right now.

Posted by: Murre | July 23, 2008 8:36 PM | Report abuse

It is raining more now, but nowhere near the hype. Consider me disappointed.

Posted by: Southside FFX | July 23, 2008 8:37 PM | Report abuse

Severe Thunderstorm Warning and Flood Warning issued for Alexandria. Things are really picking up outside.

Posted by: alexandria | July 23, 2008 8:40 PM | Report abuse

Southside FFX, i have a gut feeling u will not b disappointed when all is set and done.. Southern/eastern ffx (and up and down that corridor) looks like prime location for the heavy bands that r setting up.

Posted by: Zwther | July 23, 2008 8:41 PM | Report abuse

I stand corrected--that STW cell just crossed over the Key Bridge into G'town and it's coming down on us like a f&*$^ing ton of bricks...I'll post this while I still have cable and electric...

Posted by: Max | July 23, 2008 8:42 PM | Report abuse

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
DISTRICT OF COLUMBIA
WEST CENTRAL PRINCE GEORGES COUNTY IN CENTRAL MARYLAND...
SOUTHEASTERN ARLINGTON COUNTY IN NORTHERN VIRGINIA...
EASTERN CITY OF ALEXANDRIA IN NORTHERN VIRGINIA...
SOUTHEASTERN FAIRFAX COUNTY IN NORTHERN VIRGINIA...

* UNTIL 930 PM EDT

* AT 834 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM. THIS STORM WAS LOCATED NEAR HYBLA VALLEY...
AND MOVING NORTHEAST AT 22 MPH.

* LOCATIONS IMPACTED INCLUDE...
HYBLA VALLEY...
BELLE HAVEN...
THE WOODROW WILSON BRIDGE...
FRIENDLY...
OXON HILL...
CAMP SPRINGS...
REAGAN NATIONAL AIRPORT...
MARLOW HEIGHTS...
ANACOSTIA...

HAIL TO THE SIZE OF PENNIES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED
IN THE WARNED AREA

Posted by: Anonymous | July 23, 2008 8:42 PM | Report abuse

The sky is turning a really pretty shade of pink right now. Hopefully that doesn't foretell badness.

Posted by: 10th&M | July 23, 2008 8:44 PM | Report abuse

Raining hard and very windy up here in Baltimore. I thought this forecast was going to be a bust, but we may end-up with the predicted rainfall amounts...

Posted by: Carolina Mike | July 23, 2008 8:45 PM | Report abuse

The lightning and thunder here on the Bethesda/NW DC border has turned impressive, if not alarming...

Posted by: Jed in Bethesda | July 23, 2008 8:47 PM | Report abuse

Ah. No soup for me. I'm pretty jealous of DC and PG county right now.

Posted by: Model Monkey | July 23, 2008 8:48 PM | Report abuse

Glover Park getting absolutely pounded. Sustained winds well within severe limits with blinding rain. Will be plenty of trees to clean up when all is said and done.

Posted by: Parker | July 23, 2008 8:49 PM | Report abuse

A real show here in Mount Vernon for almost half an hour- very ominous sky rolling in from two directions, lightning, thunder, very strong winds and a deluge of rain. I'll check the rain gauge as soon as I can get outside.

Posted by: Etta | July 23, 2008 8:54 PM | Report abuse

Carolina Mike,
Completely agree. We're getting DUMPED on.

Posted by: alexandria | July 23, 2008 8:56 PM | Report abuse

Heavy rain here now (1.43"/hr.) .89 total so far

Posted by: steve takoma park md | July 23, 2008 8:56 PM | Report abuse

If this weather teaches anybody anything, it's that you need patience when they are calling for flooding rains. It's been pouring here in Lake Ridge for well over an hour and a half now. I swear that one little shower develops and everyone screams "bust!!!," then the sky opens up. When we're in a drought, we need everyone to scream "BUST!" and we'll be done with the drought in a few hours. If only it would be like that when it snows...:P

NWS radar shows that Mother Nature laid her train tracks right over Stafford, Dumfries, Lake Ridge, Lorton, Alexandria, Arlington, DC and beyond and the train has started rolling. Get your rowboats ready ;)

NWS radar also shows about 1.2-1.4 inches of rain have fallen in Lake Ridge in just the past hour.

Posted by: weatherdudeVA (Lake Ridge) | July 23, 2008 8:57 PM | Report abuse

Storm continues to taper off. Rain and thunder are diminishing. The gutters didn't fall off and the electricity stayed on.

Posted by: Murre | July 23, 2008 9:07 PM | Report abuse

Flash flood watch now cancelled...I have now recorded 1.14" so far

Posted by: steve takoma park md | July 23, 2008 9:08 PM | Report abuse

Zip in western Montgomery. The line seems to have formed over the center of the county and only eastern Montgomery, DC, and PG are being affected.

Posted by: JT | July 23, 2008 9:08 PM | Report abuse

Very impressive band of heavy rain and embedded severe storms stretching all the way from Virginia through D.C., up into Baltimore, Philly, and New Jersey. Rotation has been noted with several cells in the New York City area. This is a serious flooding concern, pay attention to any flash flood warnings that are issued.

Posted by: Andrew Freedman, Capital Weather Gang | July 23, 2008 9:09 PM | Report abuse

Very unusual.....I've never seen anything like it on radar. One squall line moving NW, the other E.....converging right over a Baltimore-DC-Quantico line. What caused the NW-moving line? Onshore circulation from the tropical system offshore?......that's the only thing I can think of.

Posted by: Mike from Vienna | July 23, 2008 9:15 PM | Report abuse

Hello rain. I missed you.

Posted by: Jamie Jones, Capital Weather Gang | July 23, 2008 9:21 PM | Report abuse

Came in pretty quick here in Western Fairfax earlier- was really something to see the clouds move so fast. 0.34 inches of rain so far, but it seems to have quieted down for now. I liked the "It's raining cats and dogs" message from my new weather station... ;-)

Posted by: CM | July 23, 2008 9:27 PM | Report abuse

Where's VAStateofMind? Hopefully he didn't go out for a makeup bike ride...

Posted by: Huntington Mark | July 23, 2008 9:44 PM | Report abuse

The usual north Fairfax dry spot is hung over us tonight AGAIN, like most of the rest of this year. Like always, the rain is either blowing up in Potomac towards Rockville and Silver Spring, or southern Fairfax Co. through PG. And its always by a hair. We must seriously have 15 inches less of rain than the rest of the region so far this year. At least the grass is still green.

Posted by: xtr657 | July 23, 2008 9:45 PM | Report abuse

May I have my rain back, please? Please share, Jamie.
Anyway, looks like NE Maryland, SE Pennsylvania, and NW New Jersey are the ones that will be getting "training" thunderstorms into tonight. Thunderstorms closer to the metro area look to be weakening.

Any reports of flooding within the warned area?

Posted by: Model Monkey | July 23, 2008 9:47 PM | Report abuse

Where the hell is Lake Ridge? It would be nice to tell us what county its in.

Posted by: Anonymous | July 23, 2008 9:54 PM | Report abuse

It's in Prince William County.

Posted by: Anonymous | July 23, 2008 9:56 PM | Report abuse

2 1/4" in Mount Vernon and still pouring. What a fantastic rain.

Posted by: Etta | July 23, 2008 9:56 PM | Report abuse

Where the hell is Mclean? It would be nice to tell us what county its in

Posted by: Anonymous | July 23, 2008 10:18 PM | Report abuse

Here in G'burg it looks like we are just west of the train line. So far only a sprinkle - not enough to wet the ground under the trees.

Posted by: MDScot | July 23, 2008 10:21 PM | Report abuse

Where the hell is Washington DC? It would be nice to tell us what county its in

Posted by: Anonymous | July 23, 2008 10:22 PM | Report abuse

I drove down the 295/BW parkway from the beltway to East Capitol Street around 8:45 and had probably the worst visibility since my Syracuse whiteout of 1999. The rain was coming down so hard the wipers had a hard time moving all the water off my windshield.

Interior PG County and NE/SE DC are going to have some impressive rainfall totals once this is over.

Posted by: GhettoBurbs | July 23, 2008 10:25 PM | Report abuse

Rain is finally coming down in Northern MoCo and just heard the rumble of thunder. Looks like things are starting to blow up on the radar and the swath of rain is widening.

Posted by: David C. | July 23, 2008 10:34 PM | Report abuse

One heavy 5 minute downpour in Arlington and then zippo. Another blown forecast.

Posted by: Period | July 23, 2008 11:18 PM | Report abuse

hah. I'm kidding but I still was sort of disappointed overall.

Posted by: Period | July 23, 2008 11:21 PM | Report abuse

The comments to this entry are closed.

 
 
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