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Capital Weather Gang: September 5, 2010 - September 11, 2010

Forecast: Spectacular Saturday, showery Sunday

We got a lot of complaints that yesterday's "perfect 10" didn't live up to its billing. Hopefully, today's beautiful conditions make up for it. Sunday won't be so pretty with overcast skies and some showers. But we all know we need the rain and our gardens will be thankful. The beginning of next week promises to be stellar. This is a terrific time of year for weather in our area...

By Jason Samenow  | September 11, 2010; 4:15 PM ET  |  Permalink  |  Comments (12)
Categories:  Forecasts  
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NatCast: A magnificent matinee

* Our Full Forecast | Weather Wall | Nationals Journal * Nationals vs. MarlinsSaturday Sept. 11, 1:05 p.m., Nationals Park First Pitch9th InningWeatherChance of Rain74-7777-80Mostly sunny0%Quite a nice afternoon for baseball. Pleasantly low humidity, comfortably warm temps, and just a few clouds.   NatCast appears on the day of every...

By Jason Samenow  | September 11, 2010; 5:00 AM ET  |  Permalink  |  Comments (0)
Categories:  NatCast  
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PM Update: Pleasantly cool end to work week

Cold air above the surface mixed with warming at the ground has produced some cloudiness during the day today and it's been enough to keep temperatures in the mid-70s for highs most spots. These clouds will dissipate as we head toward and into the evening, making way for another mostly clear and cool night. Tomorrow is looking like a great start to the weekend but clouds and the risk of showers arrives overnight into Sunday.

By Ian Livingston  | September 10, 2010; 3:20 PM ET  |  Permalink  |  Comments (4)
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Igor may be a miss; more 'cane season to come

As the remnants of Tropical Storm Hermine bore down on my home turf in eastern Kansas yesterday, I figured it was time to look at what the tropics are concocting next. The latest entry to the 2010 hurricane season is Igor, which became the season's ninth named storm early Wednesday as the system reached tropical storm status (maximum sustained winds ranging from 39-73 mph) just south of the Cape Verde Islands - a collection of islands located about 400 miles west of the African Coast.

By Greg Postel  | September 10, 2010; 10:45 AM ET  |  Permalink  |  Comments (7)
Categories:  Tropical Weather  
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Forecast: Perfect pair of days 'til Sunday showers

Get ready for a fantastic couple of days. The stuff for which our Nice Day Sun was made! So get out and enjoy this cooler, drier airmass. There's a decent chance Saturday night into Sunday could have some showers, maybe a thunderstorm. The remnants of Tropical Storm Hermine, which came ashore in Texas earlier this week, are partly to blame -- or to thank, considering we could use some rain. Nice weather returns as we start a new work week.

By Camden Walker  | September 10, 2010; 5:00 AM ET  |  Permalink  |  Comments (31)
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Natcast: Marvelous for the Marlins

Boy, perfect weather makes this a tempting ticket. Wear a couple layers, just in case our acclimated-to-summer bodies feel "chilly" as temperatures drop through the 60s by game's end.

By Camden Walker  | September 10, 2010; 5:00 AM ET  |  Permalink  |  Comments (0)
Categories:  NatCast  
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PM Update: Mostly clear and mostly awesome

It's days like this that make the next few weeks perhaps my favorite time of year around here. Temperatures have slowly risen through the 70s toward ranging from the upper 70s to near 80. A gusty breeze from the north and northwest is the only real downside, but other than those dealing with some small brush fires, it's not too bad. Of course, we could use some rain and it doesn't look like too much is out there in the future...

By Ian Livingston  | September 9, 2010; 3:20 PM ET  |  Permalink  |  Comments (1)
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Drought getting closer to D.C. area

No doubt we're in a dry stretch. Aug. 22 and 23 are the last time more than a trace of rain was measured at Reagan National and Dulles airports, respectively. BWI's virtually rainless streak also goes back to Aug. 23. According to the latest U.S. Drought Monitor issued this morning, the recent dryness and an overall deficit in precipitation for the year to date has much of the area classified as "abnormally dry" -- just a step away from "moderate drought" -- with the exception of D.C. proper and Prince George's, Howard and eastern Montgomery counties.

By Dan Stillman  | September 9, 2010; 11:00 AM ET  |  Permalink  |  Comments (7)
Categories:  Droughts, Local Climate  
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Forecast: Much cooler and quite dry next 3 days

I can say with little doubt that there won't be a 90+ day for the next 5 days and with a little luck none for the following 5 days as well. We seem to be settling into a pattern more conducive to pulling cooler air from Canada for a change. After yesterday's desert blast (afternoon humidity dropped to 15% with dew points in the low 30s!), I'm looking forward to a few Sunday showers. If it weren't for the moisture from the remnants of Tropical Storm Hermine, we probably would get zilch out of the incoming front. As it is, rains will be meager and plants need watering.

By David Streit  | September 9, 2010; 5:00 AM ET  |  Permalink  |  Comments (11)
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PM Update: More 90s, but cool on the doorstep

What a difference a few hours makes when it comes to a cold front passage around here. Add in downsloping winds right behind the front and you've got a pretty hot one (despite rapidly falling humidity levels). Temperatures managed to reach the low-to-mid 90s this afternoon including at least 95 at National Airport. But, as noted, dew points have plummeted into the 40s and 30s behind the front, and that helps set up the cool nights and days ahead.

By Ian Livingston  | September 8, 2010; 3:25 PM ET  |  Permalink  |  Comments (7)
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Baltimore breaks 90+ degree day record

While D.C. is 6 days away from breaking its record for 90+ degree days, Baltimore has already done it.

By Jason Samenow  | September 8, 2010; 1:30 PM ET  |  Permalink  |  Comments (3)
Categories:  Extreme Heat, Local Climate  
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The six great early American climate myths

hen Richard Mather, grandfather of Cotton Mather, the fiery New England preacher, arrived in Plymouth Bay Colony in a hurricane in August 1635 he, as well as fellow passengers aboard the James were certainly surprised at the way Mother Nature welcomed them. Not that a hurricane was so unusual, because they had vaguely heard of them. They just didn't realize hurricanes could travel so far north. But the real shocker would be the overall severity of the New England weather that awaited them, especially during the era now known as the "Little Ice Age," roughly 1450-1850.

By Don Lipman  | September 8, 2010; 11:00 AM ET  |  Permalink  |  Comments (5)
Categories:  Education, Lipman  
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Forecast: Can cold front knock out 90s for good?

Yesterday was the 61st day this year of 90 or above at Reagan National. As you may know by now, 1980 is the record-holder for 90-degree days -- a total of 67. 2010 has already beaten out 1980 for warmest summer on record. Do we have a chance at the 90+ record as well? The final 90-degree day of 1980 wasn't until Sept. 22, so there's still time. But with a cold front coming through early today, opportunities for 90+ are looking limited after today, and my guess is we'll fall short of setting yet another weather record in 2010.

By Dan Stillman  | September 8, 2010; 5:00 AM ET  |  Permalink  |  Comments (19)
Categories:  Forecasts  
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NatCast: Nice one for Nats-Mets matinee

Partly to mostly sunny skies make for a nice afternoon, but also require sunscreen. Enjoy the steady breeze and decreasing humidity

By Dan Stillman  | September 8, 2010; 5:00 AM ET  |  Permalink  |  Comments (0)
Categories:  NatCast  
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PM Update: Heat blasts, but prepares to leave

We're getting another late taste of summer here today but it won't be terribly long lived. Temperatures have risen to near 90 or into the low 90s, and with dew points in the low-and-mid 60s, it's not super comfortable out. Tomorrow will be another warm one, but probably a little less so and also with a little bit drier air mass. After that, we close out the work week on a splendid note.

By Ian Livingston  | September 7, 2010; 3:20 PM ET  |  Permalink  |  Comments (8)
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The last August sunrise, 2010

A light breeze rippled the surface of the water on the Reflecting Pool. The temperature would later hit 96 degrees at National Airport at 3PM, but during the pre-dawn hour there was no sign of the day's impending heat. I set up two cameras, a video camera and a DSLR camera, at the edge of the Reflecting Pool and waited for the sunrise. It would not be long before these sunrise shoots would be chilly, or down right cold, as fall approaches. But, for August 31, the weather was ideal.

By Kevin Ambrose  | September 7, 2010; 1:00 PM ET  |  Permalink  |  Comments (3)
Categories:  Photography  
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Rapping weatherman won't be rapping anymore

Have you seen "rapping weatherman" Nick Kosir of the FOX affiliate in Beaumont, Texas? The internet sensation, whose performances have caught the attention of Bill, O'Reilly, Ryan Seacrest and Ellen Degeneres, is leaving Beaumont for a big market gig in San Francisco. But SF Weekly reports Kosir's rapping days are history.

By Jason Samenow  | September 7, 2010; 10:30 AM ET  |  Permalink  |  Comments (9)
Categories:  Humor, Media  
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Forecast: Brief heat pop and then cooler

The big beautiful high pressure area that dominated our very nice holiday weekend is now starting a voyage across the Atlantic. Its departure means a turn of winds and the introduction of a little more humidity and heat. Fortunately, this week's heat story should be nothing like last week's upper 90s. Instead, we should only manage upper 80s to near 90 today and tomorrow before a new cool air mass arrives by Thursday and Friday.

By Matt Rogers  | September 7, 2010; 5:00 AM ET  |  Permalink  |  Comments (4)
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NatCast: A bit warmer

* Our Full Forecast | Weather Wall | Nationals Journal * Nationals vs. MetsToday, 7:05 p.m., Nationals Park First Pitch9th InningWeatherChance of Rain8477Mostly clear, warmer 5%No weather problems are expected. Play ball!   NatCast appears on the day of every Nationals home game. Also, if you haven't already, join us...

By Matt Rogers  | September 7, 2010; 5:00 AM ET  |  Permalink  |  Comments (0)
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Forecast: Warming up, but shy of hot

Our terrific stretch of weather keeps plugging along today and even the warm-up slated for the middle of the week is tolerable by this summer's sultry standard. Later this week, beautifully pleasant weather returns before showery weather sets up for the weekend. By then though, we will have gone more than two weeks without measurable rain, so not a bad thing...

By Jason Samenow  | September 6, 2010; 5:00 AM ET  |  Permalink  |  Comments (10)
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NatCast: Sunny September afternoon

* Our Full Forecast | Weather Wall | Nationals Journal * Nationals vs. MetsMonday, September 6, 1:05 p.m., Nationals Park First Pitch9th InningWeatherChance of RainNear 80Low 80sLots of sun0%It's sunscreen weather but the low humidity means you won't sweat. Temps are mostly in the low 80s.   NatCast appears on...

By Jason Samenow  | September 6, 2010; 5:00 AM ET  |  Permalink  |  Comments (0)
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Forecast: Splendid conditions hold fast

It doesn't get much better than this. Nearly perfect weather continues today and will last through our long holiday weekend. The sunshine and mild temperatures stay with us long enough to ensure that your outdoor plans go off without a hitch, at least weather-wise. We'll stay dry as we move into the week as well, though returning heat may add a couple more 90 degree days to our tally.

By Brian Jackson  | September 5, 2010; 5:00 AM ET  |  Permalink  |  Comments (16)
Categories:  Forecasts  
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