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Posted at 10:15 PM ET, 06/30/2008

More Showers and Storms

By Ian Livingston

10:15 PM update: Storms are now exiting Prince George's County and entering Anne Arundel County where there's now a Severe Thunderstorm Warning in effect until 11:00 p.m. (along with northeast Prince George's County, where storms remain). These storms will move towards the Bay in the next half hour and that should be it for storms this month in our region. Thank heaven.

Monitor the storm's progress with our severe tracking station and 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: After a risk of evening showers or thunderstorms, drier and cooler air will keep filtering in overnight. This will allow temperatures to fall to around 60 in the suburbs and into the mid 60s for the city. Skies will be partly to mostly clear as a northwest wind blows around 5-10 mph.

Tomorrow: July can't start much better than what is expected on Tuesday. Temperatures should reach the low 80s just about everywhere with very low levels of humidity for this time of year. Mostly sunny skies and a nice breeze from the southwest may combine to make you wish you took off early for the long upcoming holiday weekend!

See Jason's full forecast through the rest of the week, and check out the detailed July 4 forecast for your holiday plans throughout the area. Keep reading for earlier updates.

8:15 PM Update: Severe Thunderstorm Warnings are out for Manassas, southern Loudoun County, western Fairfax County and northwest Prince William County until 9:00 p.m. This severe line of storms will move eastward through the metro area in the next 90 minutes. Gusty winds and small hail are possible with these storms along with heavy rain.

6:30 PM Update: The first round of storms has passed through the metro area (no warnings are currently in effect), but another is developing to the west. If the second round holds together (40% chance), it would likley affect the area between 8 and 10 p.m.

5:20 PM update: A Severe Thunderstorm Warning has been issued for eastern Fairfax County, Arlington, the District and Prince George's County until 6:15 p.m. Heavy rain, gusty winds to 60 mph and small hail are possible with this storm.

3:30 PM update: With the oppressive humidity of the weekend behind us, today has been a comparatively pleasant end to June -- a month that will be remembered for its severe weather across the region. Highs have reached the mid 80s in most places prior to rainfall knocking readings back a bit. Additional scattered showers and thunderstorms are possible through the evening, the strongest of which may contain small hail and gusty winds.

By Ian Livingston  | June 30, 2008; 10:15 PM ET
Categories:  Forecasts  
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Next: July 4th Forecast: Late-Day Storm Threat

Comments

How likely is it that the intense storms over W Virginia now make it over the mountains and into the metro area this evening?

Posted by: 10th&M | June 30, 2008 3:54 PM | Report abuse

We lost power for about 4 minutes here in Lake Ridge (in other words, just long enough for everything to blink 12:00AM, lol). Did anyone else in Lake Ridge lose theirs?

There is a storm in the vicinity but there is no lightning with it, so I assume it wasn't storm related (duh). Usually the only reason we lose power is because someone flips their car into a pole or construction or something. Oh well...just as long as it doesn't go out again.

Posted by: weatherdudeVA (Lake Ridge) | June 30, 2008 4:47 PM | Report abuse

Getting some lightning over Southern Fairfax County now, it looks like.

Posted by: 10th&M | June 30, 2008 4:54 PM | Report abuse

Here it comes!

In the words of our fearless leader: "Bring it on!"

Posted by: please rain | June 30, 2008 5:01 PM | Report abuse

Severe thunderstorm warning for DC, Arlington, PG, Alexandria, Falls Church, and Fairfax until 615p.

Posted by: 10th&M | June 30, 2008 5:24 PM | Report abuse

Quiet, modest, well-behaved rain in Annandale.

Posted by: jhbyer | June 30, 2008 5:27 PM | Report abuse

Fitting to end this month with a severe thunderstorm warning in D.C. I guess! I wonder how many this makes for the month.. will have to do a little digging or find someone to dig for me.

Posted by: Ian, Capital Weather Gang | June 30, 2008 5:29 PM | Report abuse

The above was a report not a prediction. (Who knows what happen next!)

Posted by: jhbyer | June 30, 2008 5:29 PM | Report abuse

Making up for the "DC Donut" again--just look at that radar...

Posted by: Max | June 30, 2008 5:35 PM | Report abuse

pouring rain here in arlington, but the sky is strangely bright and i haven't heard any thunder. arlington has been missing the latest storms...

Posted by: dinergirl | June 30, 2008 5:35 PM | Report abuse

We just got clobbered with some seriously strong winds and pouring rain.

Posted by: alexandria | June 30, 2008 5:36 PM | Report abuse

Reasonably heavy rain on the Bethesda/NW DC border, but otherwise.... No thunder, lightning, etc.

Posted by: Jed | June 30, 2008 5:45 PM | Report abuse

There was no thunder and lightening with that storm. The worst of it (red/pink on radar) was over my head, but didn't hear anything but gusting winds and pounding rain.

Posted by: alexandria | June 30, 2008 5:48 PM | Report abuse

Ian: I dunno about the warnings for the month, but I have counted 16 severe thunderstorm and tornado WATCHES alone that PWC (and the rest of the immediate metro area) has been under this year. I may have accidentally counted some 2 times, so we've been under about 12-16 watches this year. That's ridiculous. I remember when it was a huge deal when we were under a watch, now they're just as common as a partly cloudy day around here.


NWS radar is looking pretty interesting out to our west right now...

Posted by: weatherdudeVA (Lake Ridge) | June 30, 2008 6:58 PM | Report abuse

Brace for impact...a line of really big storms stretching from the middle of Loudoun county to that weird tip of Culpeper that juts out to the east about to smash into us.

Culpeper, Loudoun, Fairfax, Prince William and Fauquier under severe thunderstorm warnings. I assume that a new one is going to go up very shortly for the rest of Prince William and Fairfax...

Posted by: weatherdudeVA (Lake Ridge) | June 30, 2008 8:14 PM | Report abuse

Yeah that line has certainly held together well.

Posted by: Anonymous | June 30, 2008 8:20 PM | Report abuse

A reminder about our new feature on the tracking station -- for any warnings that light up on the map, click the appropriate label in the legend to get the detailed warning text.

Posted by: Dan, Capital Weather Gang | June 30, 2008 8:43 PM | Report abuse

Wow, it just got black as night here in North Stafford. Heavy duty thunderstorm on the way....

Posted by: David A. in Stafford | June 30, 2008 8:52 PM | Report abuse

I'm looking at the LMA data, and I was wondering if anyone knows what the significance of the scale is. e.g., what does a "5" on the LMA Source Scale mean? What does a 75 mean? Are they arbitray numbers? The number of strikes per x minutes? The number of receivers that caught the strike?

Posted by: 10th&M | June 30, 2008 8:57 PM | Report abuse

Hell-o, what happened to the warnings?

Posted by: Anonymous | June 30, 2008 8:59 PM | Report abuse

Apparently this is all we get:

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
841 PM EDT MON JUN 30 2008

DCZ001-MDZ009-013-016-VAZ042-052>055-010200-
DISTRICT OF COLUMBIA DC-MONTGOMERY MD-PRINCE GEORGES MD-STAFFORD VA-
LOUDOUN VA-CHARLES MD-PRINCE WILLIAM/MANASSAS/MANASSAS PARK VA-
ARLINGTON/FALLS CHURCH/ALEXANDRIA VA-FAIRFAX VA-
841 PM EDT MON JUN 30 2008

...STRONG THUNDERSTORMS TO AFFECT THE DISTRICT OF
COLUMBIA...ARLINGTON...MONTGOMERY...PRINCE GEORGES...STAFFORD...
LOUDOUN...CHARLES...PRINCE WILLIAM...MANASSAS...MANASSAS PARK AND
FAIRFAX COUNTIES...

AT 841 PM EDT...DOPPLER RADAR INDICATED A LINE OF STRONG
THUNDERSTORMS FROM STERLING...SOUTH TO STAFFORD...MOVING EAST
AT 30 MPH.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
50 MPH.

MUCH OF THE WASHINGTON DC METROPOLITAN AREA...SOUTH ALONG THE
INTERSTATE 95 CORRIDOR TO NEAR STAFFORD...WILL BE AFFECTED BY THIS
STORM.

Posted by: Anonymous | June 30, 2008 9:00 PM | Report abuse

It's pouring like mad here in Lake Ridge.

Posted by: meta | June 30, 2008 9:06 PM | Report abuse

Alls quiet in Silver Spring.

Posted by: Murre | June 30, 2008 9:11 PM | Report abuse

Great. Alexandria is going to get nailed. Again.

Posted by: alexandria | June 30, 2008 9:17 PM | Report abuse

Pouring rain with a little lightening and thunder on the side here in Merrifield. Wind didn't kick up much ahead of it.

Posted by: ~sg | June 30, 2008 9:19 PM | Report abuse

Same as ~sg - here in Springfield, very heavy rain with some lightning in the distance.

Posted by: Mark | June 30, 2008 9:20 PM | Report abuse

Heavy rain, thunder and lightning in Alexandria. At least the rain isn't blowing horizontal this time. Previous storm today was way worse in terms of wind.

Posted by: alexandria | June 30, 2008 9:30 PM | Report abuse

Re: Warnings
Severe thunderstorm warnings are not issued unless warning criteria are met. The criteria do NOT include:
- Heavy rain, no matter how blinding
- Winds less than 58 mph
- Lightning, intense or not
- Hail less than 3/4 inches

Capital Climate

Posted by: Capital Climate | June 30, 2008 9:31 PM | Report abuse

I was out in the storm that blew through Alexandria this afternoon around 5:30. That was some of the strongest rain and wind I've ever experienced, with almost no lightning or thunder. Strangely, it was very localized to around Belle Haven and Fort Hunt Roads in Fairfax south of Old Town. Snapped power poles, signals out, trees and branches down, and debris all over the road. Just a half-mile north and south of this area, no problems (just rain). Was this a microburst?

Posted by: Huntington Mark | June 30, 2008 9:52 PM | Report abuse

@ Huntington Mark

YES! I think you are right! Wind/rain was blowing horizontal at one point. Some big branches and trees down in the City of Alexandria (see SPC for damage report) and the damage appears to be multi-directional (i.e. some branches fell in an easterly direction, others westerly). It definitely wasn't a run-of-the-mill t-storm.

Posted by: alexandria | June 30, 2008 9:58 PM | Report abuse

Hey Capital Weather Gang,

For a minute or so just now, the Special Weather Statement for **841 PM** re-appeared then disappeared from the Sterling map for these counties: DISTRICT OF COLUMBIA DC-MONTGOMERY MD-PRINCE GEORGES MD-STAFFORD VA-
LOUDOUN VA-CHARLES MD-PRINCE WILLIAM/MANASSAS/MANASSAS PARK VA-
ARLINGTON/FALLS CHURCH/ALEXANDRIA VA-FAIRFAX VA-

I clicked on it to see what special weather statement was being propagated after the bulk of this round of storms had passed through those counties.

This may have been a simple human mistake, or it may have been related to the troubles over the past week and a half with transmitting the Severe Thunderstorm Warnings.

Posted by: Murre | June 30, 2008 10:02 PM | Report abuse

@ alexandria:

The other thing about this storm was that an hour earlier, there was nothing on radar approaching Alexandria, DC or the airport. It seemed to come out of nowhere.

Posted by: Huntington Mark | June 30, 2008 10:05 PM | Report abuse

Hey CWG again,

Ok, now, the 943 PM Special Weather Statement for Anne Arundel and PG is (finally) showing up on the Sterling map. It was not there while I was composing my previous post but just showed up about 2 minutes ago. Somebody or something may be having troubles.

Posted by: Murre | June 30, 2008 10:06 PM | Report abuse

The National Weather Service confirmed wind damage in Alexandria around 5:30 p.m.

Posted by: Jason, Capital Weather Gang | June 30, 2008 10:08 PM | Report abuse

Mark and Alexandria my advice would be to skip happy hour on Mondays or to step away from the pipe.

Posted by: Anonymous | June 30, 2008 10:09 PM | Report abuse

@ Huntington Mark

Whatever it was, it was a very intense burst. My neighbors were all wondering what the heck happened. I was checking out the radar at that time and the cell deepened just as it went over Alexandria-northern Mt Vernon (reds --> pink).

Posted by: alexandria | June 30, 2008 10:10 PM | Report abuse

The comments to this entry are closed.

 
 
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