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Posted at 4:00 PM ET, 09/30/2010

Some gusty storms, then possible rain round 2

By Ian Livingston

Flood risk remains; Where will rain set up tonight?

* Flash Flood Warnings west, north & east of D.C. (see map below) *
* Tornado watch for eastern counties until 7 p.m. (map) *
* Storm impact coverage: PostLocal | Live chat transcript *
* Flash Flood Watch thru tonight | Share photos | Dr. Gridlock *
* Citizen observer rain totals: VA, MD | NWS Mesonet rain totals *
* Outside now? Radar, temperatures & more: Weather Wall *

(originally posted at 3:30 p.m., updated at 4:00 p.m.)

A band of showers and thunderstorms to the west is moving northeast along a front associated with the first low pressure that passed by this morning. This band may contain some severe weather, with damaging winds the main threat -- and of course the risk of additional flooding with any more rain. Also, winds are a factor this afternoon even where it's not raining, sustained above 15 mph most spots wth gusts near 35-40 mph common.

Through Tonight: The showers and storms to the west and southwest, some potentially severe, should pass north and northeast across the area over the next few hours. Not everyone will see rain, but nobody needs anymore at this point.

The next system riding up the coast should send in some showers by evening, with the bulk of the rain moving north through the area later at night. Lows reach near 60 in the cool spots to the mid-60s in the warm.

There are still questions as to where exactly the heaviest additional rain sets up, but it's most likely to be from D.C. and to the east, though the city may end up on either side of the heavy rain line. Towards the Bay, torrential rain is again possible. We will have more as the storm closes in.

Tomorrow (Friday): Showers may linger into the morning, but the worst action should be headed east and northeast of the area. By midday skies should break (earliest west, latest east) and we likely finish the day with mostly clear skies and highs in the low-to-mid 70s. Winds should be gusty again, probably sustained around 20-25 mph from the northwest during the afternoon with higher gusts.

See David Streit's forecast through Monday. And if you haven't already, join us on Facebook and follow us on Twitter.

Record rainfall: Both Dulles Airport (IAD) and Baltimore-Washington International (BWI) have picked up record rainfall for the date, while National (DCA) is running just shy. The previous records and today's estimated totals through 3 p.m. are as follows: DCA, 2.76" in 1924 compared to 2.65 today; IAD, 0.86 in 1976 compared to 3.1 today; BWI, 1.60" in 1920 compared to 3.56 today. Each airport also picked up at least some rain yesterday. We will report final totals once we have them.

By Ian Livingston  | September 30, 2010; 4:00 PM ET
Categories:  Forecasts  
Save & Share:  Send E-mail   Facebook   Twitter   Digg   Yahoo Buzz   StumbleUpon   Technorati   Google Buzz   Previous: Rain takes a brief breather, flood risk continues
Next: Second wave of heavy rains advancing north


What are the chances of canoeing the streets of DC this evening?

Posted by: tobriggs | September 30, 2010 3:48 PM | Report abuse

Power out AGAIN in the Four Corners area of Silver Spring. That's twice in 8 days, with very modest winds. Thanks for nothing, PEPCO.

Posted by: vtavgjoe | September 30, 2010 3:54 PM | Report abuse

Getting dark again at 66 and Nutley; rain starting in again. Not looking forward to the drive home . . .

Posted by: Gunga2009 | September 30, 2010 3:54 PM | Report abuse

I have 10 dollars riding on power going out in the Chevy Chase area. Don't let me down PEPCO...

Posted by: tobriggs | September 30, 2010 3:59 PM | Report abuse

Any consensus yet on where tonight's rain will fall?

Posted by: FH59312 | September 30, 2010 4:58 PM | Report abuse

With all of the numerous early dismissals from the surrounding school systems earler today, what are the chances there will be delays or cancellations for tomorrow?

Posted by: jcmcgrath1969 | September 30, 2010 5:12 PM | Report abuse

Less than a week ago we were focused on the 90-degree days heat record and now we're wondering if gators will swim through the streets of DC.

Meanwhile, today's 70s readings seem as as oppressive as last week's thermal temps. Gator weather, definitely.

Posted by: JerryFloyd1 | September 30, 2010 5:36 PM | Report abuse

vtavgjoe, we Dominion customers here inside the Beltway in Annandale, VA, lost power, also. It's the first time, since Isabel tore through in '03, so, it must've been a baddie.

What's weird is we lost it after the storm had passed - FWIW, at 3:48 pm - and the skies, at least above my little patch of planet, seemed calm.

tobriggs, I'd say the odds are with you. May your outage be short and sweet.

Posted by: jhbyer | September 30, 2010 5:39 PM | Report abuse

I hope the NWS forecast of dewpoints dropping below 60 by dawn tomorrow verifies. I am so over this mugginess. If I wanted to live in Houston I'd friggin' move there.

Posted by: HenryFPotter | September 30, 2010 5:40 PM | Report abuse

4" in the rain bucket in Harpers Ferry. I believe at least 6 separate t-storms went through our area while D.C. was apparently enjoying a clear spell this afternoon. Tuesday's storm total was 3.3" here. I will be very happy if tonight's storm decides to rain on someone else.

NWS maintained its accomplishment of getting the wind totally--obstinately--wrong. For a major SE storm system, NWS informed us (days ahead and without ever changing) that the wind would be N and NW. It continued to insist that the wind was blowing from the N and NW while every reporting station in the area showed SE hour after hour, including some fairly strong gusts.

Posted by: tinkerbelle | September 30, 2010 5:44 PM | Report abuse

Looks like the next batch of heavy rain will be here sometime this early evening. It's in the vicinity of Richmond right now and moving pretty much due north. The way it appears on radar suggests that anyone in the immediate DC area is going to be seeing some moderate to heavy rain from "Round 2".

Posted by: pjdunn1 | September 30, 2010 5:58 PM | Report abuse

WOW! 6 inches of rain has fallen in Burke so far!

Posted by: Yellowboy | September 30, 2010 5:59 PM | Report abuse

Jerry, here in Annandale for a few hours, I swear it felt much hotter than the temps listed in WaPo. We're used to humidity, so I wonder...

Posted by: jhbyer | September 30, 2010 6:03 PM | Report abuse

Still calm here in Spotsy. no rain since 11:30. Streams not even close 2 flooding at this point. Holding steady at 1.25", definetly the low end of the rain totals, which is generally the case in this area.
Glad all this will clear in Raleigh NC soon, going 2 Tech-NC State game Sat.
Go Hokies & Steelers.

Posted by: VaTechBob | September 30, 2010 6:14 PM | Report abuse


Don't fret. Looks like you will be adding to that total shortly. Radar is quite juicy all the way down to the NC/SC border and heading our/your way. Have fun at the game!

Posted by: pjdunn1 | September 30, 2010 6:19 PM | Report abuse

sure looks like the rain will impact most of the DC area, not just east of 95

Posted by: rocotten | September 30, 2010 6:52 PM | Report abuse

@jhbyer, I agree; it was stifling this afternoon downtown. I grew up in central Florida and it was deja vu all over again.

Posted by: JerryFloyd1 | September 30, 2010 7:10 PM | Report abuse

Funny, but I haven't had too many storm-related power outages recently, but did have a good one around midnight a couple of weeks ago--it was possibly related to all that construction going on around Columbia Pike & Four Mile Run lately. Incidentally, we seem to have had a sinkhole open up today at Columbia Pike and South Wakefield St. whether from rain or construction activity I'm unsure.

Posted by: Bombo47jea | September 30, 2010 7:17 PM | Report abuse

How does this compare with Agnes back in the 70s? That was the worst flooding I can remember around here.

Posted by: Fabrisse | September 30, 2010 10:55 PM | Report abuse

The comments to this entry are closed.

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