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Capital Weather Gang: March 21, 2010 - March 27, 2010

Forecast: Saturday sun & chill; Sunday p.m. rain

For three straight weeks, temperatures had been above average. But thanks to a late season batch of Arctic air that sank south yesterday, the warm spell abruptly ended. We'll feel that cold air mass today with temperatures 10 degrees below average. It will be slightly milder tomorrow, but rain will return later in the day. Suffice to say,conditions will be a far cry from last weekend's blissful 70+ degrees.

By Jason Samenow  | March 27, 2010; 4:30 PM ET  |  Permalink  |  Comments (19)
Categories:  Forecasts  
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PM Update: Freezing cold tonight, cool weekend

Next chance of rain arrives Sunday p.m. * World Meteorological Day | World's Longest Toilet Queue * * Outside now? Temps, clouds & more: Weather Wall | Traffic * To think, yesterday evening we were enjoying temperatures in the low 70s dropping into the 60s, before the rain arrived last...

By Dan Stillman  | March 26, 2010; 4:50 PM ET  |  Permalink  |  Comments (7)
Categories:  Forecasts  
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World Meteorological Day 60th Anniversary

Have you thanked your local meteorologist this week? Each year on March 23, World Meteorological Day is observed by the United Nations' World Meteorological Organization (WMO). This week, WMO observed its 60th anniversary with the theme 60 years of service for your safety and well-being.

By Ann Posegate  | March 26, 2010; 1:00 PM ET  |  Permalink  |  Comments (6)
Categories:  Posegate  
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World's Longest Toilet Queue

* Cool weekend coming: Full Forecast | Radar & more: Weather Wall * Now that I have your attention with the headline... Monday was the 18th annual World Water Day (WWD), a day designated by the United Nations to focus attention on the importance of sustainable management of freshwater resources....

By Steve Tracton  | March 26, 2010; 11:00 AM ET  |  Permalink  |  Comments (4)
Categories:  International Weather, Tracton  
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Forecast: Rainy, raw & windy end to work week

Morning rain and a windy chill don't exactly make for a great end to the work week. After today's harsh reminder that it's still March, sunshine and warmer weather return for Saturday and early Sunday, but weekend highs will fall short of the 60s and 70s some of us have gotten used to.

By Camden Walker  | March 26, 2010; 9:55 AM ET  |  Permalink  |  Comments (8)
Categories:  Forecasts  
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PM Update: Rain moves in this evening

Much cooler air inbound; 1st DCA March freeze Sat. morn? * Now you know the power of El Niño | NASA projects a hot 2010 * * Outside now? Radar, temps & more: Weather Wall | CWG T-Shirts * Even with the clouds, temperatures today didn't have much trouble rising...

By Ian Livingston  | March 25, 2010; 8:15 PM ET  |  Permalink  |  Comments (15)
Categories:  Forecasts  
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Now you know the power of El Niño

This past winter we've had more nor'easters or quasi-nor'easters than I can count or ever remember in one season. What was the reason? Yes, you can blame it on a negative NAO (North Atlantic Oscillation) and a negative AO (Arctic Oscillation), both known contributors to a colder- and stormier-than-normal-pattern in the eastern U.S. Some meteorologists may even correctly implicate other hemispheric systems, but it was probably ENSO, the El Niño Southern Oscillation, that was the coup de grâce for the ferocious mid-Atlantic winter.

By Don Lipman  | March 25, 2010; 11:45 AM ET  |  Permalink  |  Comments (3)
Categories:  Education, Lipman  
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Forecast: Mild day, rain likely to wait until tonight

The weather over the next 5 days may provide a case of déjà vu. One storm is slated to come through tonight making for a messy Friday morning rush hour. This scenario will repeat late Sunday into Monday morning. Rains from both systems should be in the one half to one inch range. These showers will make the sneezers happy as plenty of tree pollen will be washed from the skies. Unfortunately, the price to be paid is cooler temperatures over the weekend between storms.

By David Streit  | March 25, 2010; 11:45 AM ET  |  Permalink  |  Comments (12)
Categories:  Forecasts  
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PM Update: Warm through tomorrow

Rain arrives late Thursday into Friday, then cooler * NASA projects a hot 2010 | Forecasting precipitation | CWG T-Shirts * * Outside now? Temps, clouds & more: Weather Wall | Traffic * Sunshine returned in a big way today, but gusty winds from the west and northwest have yet...

By Ian Livingston  | March 24, 2010; 3:15 PM ET  |  Permalink  |  Comments (10)
Categories:  Forecasts  
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NASA projects 2010 will (likely) be the hottest year

* Pair of warmer days before rain returns: CWG's Full Forecast * Global surface temperature anomalies relative to 1951-1980 mean for (a) annual and 5-year running means through 2009, and (b) 12-month running mean through February 2010. Credit: NASA GISS. The headline to this post may surprise many Washingtonians who...

By Andrew Freedman  | March 24, 2010; 11:00 AM ET  |  Permalink  |  Comments (78)
Categories:  Climate Change, Freedman, News & Notes, Science  
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Forecast: Pair of warmer days before rain returns

After the recent stretch of sun and 70s, our spring awakening hit a bump in the road with a showery Monday and a cloudy and cool Tuesday. Temperatures move back in the right direction today and tomorrow, before rain and cooler air make a comeback tomorrow night and Friday.

By Dan Stillman  | March 24, 2010; 11:00 AM ET  |  Permalink  |  Comments (3)
Categories:  Forecasts  
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PM Update: Cool breeze now, but warmer tomorrow

Pleasant Wed. and Thurs. before next rain chance * South Pole darkness | What's mid-Atlantic? | Forecasting precipitation * * CWG T-Shirts | Radar and more: Weather Wall | Get There * Take a quick step outside and you will be reminded that we are still not too far removed...

By Ian Livingston  | March 23, 2010; 3:15 PM ET  |  Permalink  |  Comments (4)
Categories:  Forecasts  
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What is the mid-Atlantic?

I've found that the term "mid-Atlantic states" is often confusing, even to long-time inhabitants. Several times this past winter, the National Weather Service referred to storms which would primarily impact the northern or the southern mid-Atlantic and I had to ask myself, "Where are we?"

By Don Lipman  | March 23, 2010; 12:45 PM ET  |  Permalink  |  Comments (26)
Categories:  Local Climate  
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Start of spring for us, darkness at South Pole

This past weekend, while the Northern Hemisphere sprung into spring and the Arctic sunrise brought sunlight to the North Pole for the first time since September, the other end of the Earth began six months of darkness. The South Pole's only sunset of the year occurred at 2:01 a.m. Eastern Daylight Time yesterday (9:01 a.m. on March 23 South Pole/New Zealand time).

By Ann Posegate  | March 23, 2010; 10:45 AM ET  |  Permalink  |  Comments (8)
Categories:  International Weather, Posegate  
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Forecast: Cloudy and cooler today

Yesterday's showers and maybe a few today will continue aiding the spring-time return of plant life around the metro area. Blooming is in action and we'll see a lot more of it in the coming days as the sun returns. While last weekend's 70s won't repeat, we should still make a run well into the 60s tomorrow and Thursday before a big cold front arrives to offer cold rain on Friday. Right now, the weekend looks dry but chilly to start.

By Matt Rogers  | March 23, 2010; 9:00 AM ET  |  Permalink  |  Comments (6)
Categories:  Forecasts  
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PM Update: First thunder of the season

Work week still mostly mild compared to average * Forecast precipitation like the pros | A winter to remember * * CWG T-Shirts | Radar and more: Weather Wall | Get There * Some wait for a sunny stretch like we just had to announce the arrival of spring --...

By Ian Livingston  | March 22, 2010; 3:00 PM ET  |  Permalink  |  Comments (13)
Categories:  Forecasts  
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Watching the weather models: Precipitation

You, too, can predict the weather Example of output from the GFS weather model. Weather is the ultimate news story: It's always changing; it impacts everyone and everything; you never know for sure how it'll turn out; and it happens 24/7/365. Weather is the New York City of sciences. The...

By Dan Stillman  | March 22, 2010; 11:00 AM ET  |  Permalink  |  Comments (8)
Categories:  You, Too, Can Predict the Weather  
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Forecast: Back to reality - wet and not as warm

The awesome stretch of weather -- four straight days of sunny 70s -- is over. Now we deal with two unsettled days featuring occasional showers and gradually cooler temperatures. On the plus side, we're not talking about steady rains or persistent cold. In fact, by midweek, the sun will return in full force and we'll be back up into the 60s. The late-week period is more uncertain as cold air lurks to the north while some storminess develops to the southwest.

By Jason Samenow  | March 22, 2010; 11:00 AM ET  |  Permalink  |  Comments (16)
Categories:  Forecasts  
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Forecast: Finishing our stretch of fine weather

Today we keep the fantastic stretch of spring weather going. For the fourth straight day we'll head above 70 even as some clouds filter into the region late. We come crashing down from our weather high tomorrow though with rain, maybe even a few rumbles of thunder, and temperatures trending cooler.

By Brian Jackson  | March 21, 2010; 5:45 PM ET  |  Permalink  |  Comments (12)
Categories:  Forecasts  
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