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Posted at 9:20 AM ET, 06/12/2009

Forecast: Storm Chances Stay Stubborn

By Camden Walker

Fortunately, though, they decrease for weekend

* Storm Chase on I-95 | San Francisco's Summertime Stratus *


Today: Partly sunny, a bit less humid. Lingering shower/storm threat. Mid-80s. | Tonight: Mostly cloudy. Passing shower/storm. Mid-60s. | Tomorrow: Partly sunny. Isolated p.m. shower/storm? Low-to-mid 80s. | Sunday: Partly sunny. Low 80s. Isolated p.m. shower/storm? | A Look Ahead


Brace for yet another partly sunny, moderately humid day with the potential for some more showers and storms. The only way we can eliminate shower/storm chances this weekend is if a cold front hanging out in our vicinity today pushes far enough to our south and east, and at the moment that looks to be easier said than done. Flash flooding will continue to be a worry with any heavy showers or storms that come through over the next few days.

Radar: Latest D.C. area radar loop shows movement of precipitation over past two hours. Powered by HAMweather. Refresh page to update. Click here or on image to enlarge. Or see radar bigger on our Weather Wall.

Today (Friday): The humidity that we've become so familiar with this week lessens just a bit today as partly sunny skies help highs reach the mid-80s. As a cold front stalls out nearby, we run the risk of a pop-up shower or storm throughout the day, but many periods will likey be rain-free. Any storms that do develop could produce heavy rain and localized flooding. Confidence: Medium

Probability: 40%
Coverage: Isolated-Scattered

Tonight: The front moves to our south and east. Still, there's the chance of a passing evening shower or storm. Temperatures drop a few degrees lower than recent nights, to lows in the mid-60s, and areas of fog may develop overnight with otherwise partly cloudy skies. Confidence: Medium

How much sun can we expect this weekend? Keep reading...

Tomorrow (Saturday): We'll shoot for highs in the low-to-mid 80s with partly sunny skies. It won't be overly humid, but we can't rule out an isolated afternoon/evening shower or storm. Confidence: Medium

Tomorrow Night: Maybe a stray early-evening shower or storm. Then mostly cloudy with light winds and lows in the pleasant mid-60s. Confidence: Medium-High

Sunday: Expect partly sunny skies, highs probably in the low 80s, and a light breeze from the north. That's the kicker right there -- a northerly breeze means the humidity may come down even more. But we do keep our requisite isolated afternoon/evening shower/storm in the forecast. Confidence: Medium


We're looking at a 30% chance for showers or storms Sunday night. Low temperatures once again aim for the the mid-60s. Confidence: Low-Medium

On Monday, showers/storms may threaten again in that oh-so-familiar way. Highs top out somewhere around 80. Confidence: Low

It's early to completely rule out shower/storm chances, but Tuesday may give us our best chance in quite awhile of doing just that. Highs near 80 again. Confidence: Low-Medium

By Camden Walker  | June 12, 2009; 9:20 AM ET
Categories:  Forecasts  
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Next: Are You a Severe Weather Junkie?


I'm curious as to how this years rainfall compares to averages... where would you go to look stuff like that up?

Posted by: gconrads | June 12, 2009 8:08 AM | Report abuse

@gconrads on the left, under almanacs, you have a link for "past data". I think that's what you're looking for.

Posted by: debiguity | June 12, 2009 9:30 AM | Report abuse

West Springfield= 0.03" last night.

We are worried about drought here.


Posted by: bikerjohn | June 12, 2009 10:04 AM | Report abuse

Hey you all, yes indeed we've had tons of rain. And no worries about drought for the summer. That's a nice change, in my opinion... and if youre curious about rain stats, see our brief from yesterday at this link:

Posted by: Camden-CapitalWeatherGang | June 12, 2009 10:12 AM | Report abuse


Posted by: Axel2 | June 12, 2009 10:58 AM | Report abuse

Looks like the front is now south of IAD, DCA area, maybe even further (have not looked). Winds are from the NNW and dew points are coming down a bit.

Posted by: Ian-CapitalWeatherGang | June 12, 2009 11:02 AM | Report abuse

But we were supposed to have a DRY weekend, weren't we???

Posted by: Bombo47jea | June 12, 2009 11:51 AM | Report abuse

Ian - DP is still 66F. And that's coming down!? Sheesh... that's brutal.

Posted by: ennepe68 | June 12, 2009 11:57 AM | Report abuse

ennepe68, slowly! DCA dew is down to 64 now, winds went calm then took on a N component by 10a, dews have dropped from 68 at that time. By the end of the day we might have fallen from disgusting levels of humidity to just uncomfortable ones. ;-)

Posted by: Ian-CapitalWeatherGang | June 12, 2009 12:33 PM | Report abuse

Indeed the dryer air will take its time oozing in from the north. And there is no guarantee the front wiill STAY south of us, keeping us in the dryer airmass. so, Bombo, we could switch back to showers and afternoon storms (but more isolated that recently) if this front vascillates back northward toward us! ugh.

Posted by: Camden-CapitalWeatherGang | June 12, 2009 12:47 PM | Report abuse

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