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Posted at 9:05 PM ET, 06/22/2010

Thunderstorms exit east, muggy night ahead

By Ian Livingston

Could we see upper 90s or near 100 Wed/Thur?

* Tropical trouble? | Arctic sea ice melting fast | 1930s heat waves *
* Outside now? Radar, temperatures & more: Weather Wall | NatCast *

9:05 p.m. Strong to occasionaly severe thunderstorms are on their way out of the area. There are several confirmed reports of wind damage across the area, including near National Airport and Gaithersburg, Md. Hail was also spotted in a number of locations. Twitter user @mccanner sent over an image of lightning over the Library of Congress. Also, check out this video of one of the t'storms from the Key Bridge from @bpeebles. The worst of the weather is crossing over the Bay as a few lighter storms trail behind. All activity will be east shortly. (see prior updates)

Through Tonight: We'll be on the lookout for isolated to scattered storms through evening, but so far there is not much out there. Any storms that do develop could be strong to potentially severe given the heat and humidity. Dew points up near 70 mean we won't cool too much overnight, with lows dropping only to the lower 70s in the suburbs to the mid-or-upper 70s downtown.

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Tomorrow (Wednesday): Uncle! This is one of those partly-to-mostly sunny days where 90s creep into the picture by late morning and temperatures only climb for hours thereafter. Highs should shoot to the mid-90s across much of the area with maybe a few upper 90s mixed in. For reference, the record highs for June 23 at National and Dulles are 98 and 96, respectively. While an isolated late-day storm is possible, it's not terribly likely.

See Matt Rogers' full forecast through the weekend. And if you haven't already, join us on Facebook and follow us on Twitter.

Weather news: NOAA has named Raymond J. Ban as the new chair of the NOAA Science Advisory Board where he will advise on strategies for research, education and the application of science to operations and information services. Ban comes most recently from The Weather Channel, and he will remain a consultant there for industry and government projects.

9:00 p.m. Strong to occasionaly severe thunderstorms continue heading east across the area. So far, there is one confirmed report of wind damage near Gaithersburg, Md., where a warned storm passed through before tending to weaken. Overall, the several cells that developed appear to be dwindling as they head east toward the Bay. However, isolated wind gusts, some hail and brief heavy rain are still possible. All the activity should exit to the east in the next hour or so. (see prior updates)

7:30 p.m. Isolated to scattered storms have rapidly developed over the western suburbs and are moving across the area. Winds in excess of 60 mph, as well as large hail, are possible with the worst of the storms. Storms will continue to progress east fairly quickly. Brief heavy rain is also likely where storms occur, but it will not linger long.

3:20 p.m. How 'bout them heat indices? Highs reaching the low-and-mid 90s many spots this afternoon are mixing with increasing levels of humidity to help the "feels like" factor rise up to right around 100-degrees! If you've got a problem with these type of readings, I suggest you lock yourself up in a well air conditioned place for at least the next two days before relief in the way of "less hot" heat arrives later in the week.

By Ian Livingston  | June 22, 2010; 9:05 PM ET
Categories:  Forecasts  
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Next: NatCast: Can Strasburg stand the heat?


Excellent news about Ray. I remember working with him years ago, wow been a while. But very neat.

How many of you think DC will hit 100 before the week is out??

Posted by: Camden-CapitalWeatherGang | June 22, 2010 5:26 PM | Report abuse

Guidance has run a little low with highs I think, today "overperformed" given the clouds etc. If we are entering a warmer air mass I think there's a chance someone will hit 100, maybe not DCA or IAD. I'd put better odds on Thursday, the days before a frontal passage are often the warmest.

Posted by: Ian-CapitalWeatherGang | June 22, 2010 6:57 PM | Report abuse

Thunder in Centreville VA

Posted by: FIREDRAGON47 | June 22, 2010 7:17 PM | Report abuse

Centreville VA wins the t-storm lottery!
Heavy rain lasts for about 10 minutes with a moment of gusty wind.

Posted by: FIREDRAGON47 | June 22, 2010 7:26 PM | Report abuse

Where did these giant thunderstorms come from? Fairfax is getting slammed.

Posted by: rwalker66 | June 22, 2010 7:32 PM | Report abuse

A little spoke of energy is passing through. It was expected but it's hard to say when things fire off till it happens.

Posted by: Ian-CapitalWeatherGang | June 22, 2010 7:44 PM | Report abuse

Thunder off to the west in/of Silver Spring.

Posted by: Murre | June 22, 2010 7:45 PM | Report abuse

BIG boomers here in Shirlington

Posted by: AnneinSand | June 22, 2010 7:48 PM | Report abuse

Big issue for me is whether this MESS gets out of Arlington by 8:15...this is Clarendon Ballroom dance night, and I don't like this MUCH-UNNEEDED dangerous weather!

Posted by: Bombo47jea | June 22, 2010 7:51 PM | Report abuse

Man this heat stinks, but I'm sure Mr. Q will tell us it's not really that hot. Can't wait 4 him 2 provide numerous links showing that the heat is just our imagination.

Posted by: VaTechBob | June 22, 2010 7:51 PM | Report abuse

Both cells seem to have weakened, the northern one never looked that severe.

Posted by: Ian-CapitalWeatherGang | June 22, 2010 7:52 PM | Report abuse

and now heavy, heavy rain

Posted by: AnneinSand | June 22, 2010 7:53 PM | Report abuse

No more thunder since my earlier post.

Posted by: Murre | June 22, 2010 7:53 PM | Report abuse

And now we have blue skies again. Strange night.

Posted by: rwalker66 | June 22, 2010 8:02 PM | Report abuse

Despite the sky being only partly cloudy, ferocious thunder just drove through Annandale, accompanied by the usual drenching rain. Gone in a DC minute.

Posted by: jhbyer | June 22, 2010 8:02 PM | Report abuse

In Mt. Pleasant looking southwest, seeing a beautifully formed anvil cloud.

Posted by: bikes-everywhere | June 22, 2010 8:10 PM | Report abuse

Cap WX - Can you post an article discussing the current weather pattern and why it is so hot, humid, and dry so far? We're needing a lot more rain than this!!! Is this indicative of a repeat of this Winter? Curious!! Thanks!!

Posted by: schrute | June 22, 2010 8:23 PM | Report abuse

The storms missed us... just got some dark skies and a few sprinkles...

High today was 88F, thanks to the mountain microclimate.

Posted by: spgass1 | June 22, 2010 9:00 PM | Report abuse

Live in North Old Town now, not Huntington. Rain passed through here with a few claps of thunder about an hour ago. But nothing to write home about.

Posted by: JefffromHuntington | June 22, 2010 9:02 PM | Report abuse

Once again all the storms missed here in NW Spotsy., guess the dome is back in place.

Posted by: VaTechBob | June 22, 2010 10:14 PM | Report abuse

Nothing near Dulles except wind. This is shaping up to be a pathetic June. Heat is tolerable but it was a month ago we had some solid precipitation.

Posted by: LoudounGeek | June 22, 2010 10:48 PM | Report abuse

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